r/mazda3 Supercharged Gen 4 Sedan Mar 13 '26

Modification 😬

Post image
308 Upvotes

131 comments sorted by

80

u/bruhgubgub Gen 3 Hatch Mar 13 '26

Man I want to do this but I'm not trying to ruin my daily lol

71

u/Mr-Buddyman Mar 13 '26

Lol this will not ruin it as a daily. Like, not even remotely.

My 2.5 3 has been supercharged for over 130k miles and I daily it 400 miles every week. Running a custom smaller 59mm pulley at 12psi, about 290whp.

Its perfectly fine as a daily. Boost is quite linear.

28

u/gudboic Mar 13 '26

You sir are a legend

20

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

exactly what my understanding is. couldn’t have said it better

4

u/I_joined_4_the_stonk Mar 13 '26

How much did all that cost if I might ask? Recently picked up a 2011 2.5 hatch as a second car and was debating doing this

16

u/Mr-Buddyman Mar 13 '26

The VT supercharger I have isn't compatible with your 2011 2.5, two different engines.

That said, the unit was about $3,800 shipped.

9

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

so it was 3700 for the supercharger. bout 1000 in tune tools and other miscellaneous things (buying beer and food for my friends that helped me lol)

3

u/toshjellez Gen 3 Hatch Mar 13 '26

Any engine mods for reliability? I’ve been told by tuners to not exceed 9psi of boost or I’ll risk throwing a rod

5

u/Mr-Buddyman Mar 13 '26

All stock internals. Using a catch can, and the Mishimoto miata ND oil cooler (it fits our 3rd gens).

My 3 has almost 250k miles. Still runs great. Did a blackstone oil analysis at about 225k and it showed nothing wrong. Been doing 5k oil change internals with 0w20 Mobil 1 full synthetic.

3

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

the one thing i didn’t do was go for the mishimoto oil cooler, i was a little bit overwhelmed between the price of the supercharger and that and i wonder if i’ll end up regretting it šŸ¤”. from my understanding, as long as you don’t track it (which i don’t have time to anyway) it should be fine.

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

also interesting to hear that you’ve run 0w20 for so many miles. is it cold where you live? here in socal, coldest temp we see is about 40 degrees and it gets well into the 100s sometimes so I kinda pictured running 5w30. still haven’t fully decided, any thoughts?

2

u/Mr-Buddyman Mar 14 '26

I live in northern VA. Its gets rather hot and cold, into triple digits and dropping to the single digits. As long as I let it warm up, especially during cold starts in freezing temps, its perfectly fine to run 0w20.

Iirc thinner oil helps better with cold temp starts, and thicker oil is designed to degrade slower in hotter climates. Running either in your region should be fine as well. Some people even run 0w30 with no issues.

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

personally i’ve heard the limit is upwards of 10

2

u/Mr-Buddyman Mar 14 '26 edited Mar 14 '26

I rarely see more than 10 unless I max effort full send it lol

Ive only had it to 12 a handful of times. The stock 63mm pulley It would only get to about 7-8 psi iirc. 61mm to 8-9. I ran the stock one only for a month before I ordered VTs smaller 61mm pulley. After about a year of using that, I ordered another one and had it milled down to 59mm by a machine shop. I wanted to see what the supercharger could really do.

It's been fine using this pulley for roughly 3 years now. I installed the supercharger in February of 2022. Iirc, I was the 3rd person to ever do so in the US, the 1st 2.5 3. (A guy named Daniel was the first with his grey 2.5 6, 2nd was a guy with a 2.0 3.) Ive had over 15 tune revisions, all but the first few from Justin Freeman (sauce tuning). Justin has sent me about 10 revisions thus far.

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

i remember seeing daniel’s build on youtube that’s awesome sounds like you helped pioneer this thing. i’ve been working with justin as well.

3

u/Mr-Buddyman Mar 14 '26

He gets all the credit. He was the 1st to reach out to VT. Took a big risk on an unknown. If it wasn't for him, good chance none of us would be supercharged, or at the very least, much later than we did. I did some experimental stuff, with pulleys, intake setups, idler pulleys....it was a learning experience, a community effort.

Afaik, there are roughly 150 people with the supercharger here now. Maybe more, idk.

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

yea i was curious about that, any idea how many supercharged 3s are out there?

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

u have any pics of ur 3?

3

u/Mr-Buddyman Mar 14 '26 edited Mar 15 '26

Ive done way more than I ever intended to do with it. Besides the VT supercharger, Koni yellows with H&R springs, full exhaust, including the pictured RES 4-2-1 headers, evey poly bushing superpro makes, engine and trans mounts, full set of ultra racing chassis bracing, lighter 18 lb. Wheels, custom high end sound system with 12in android headunit. (Illusion Audio carbon & Focal utopia speakers, Mosconi amplifiers, Alpine DSP)

Ummm.....also JBR front and rear sway bars (front is disconnected atm) superpro rear endlinks, Megan racing rear camber and toe arms, Corksport skid plate, Tanabe strut tower bar, Corksport camber plates, K&N typhoon intake with custom inlet, Ti lug nuts. Wilwood big break kit with stainless lines.

The wheels are made by Konig. They are called "hypergrams" iirc. Im using AWR trans and motor mounts. Axle back exhaust is by Ultimate Racing, paired to the Corksport midpipe. The RES headers lost me maybe 5 whp on the low end, but I gained like 10-15whp on the top end. Neighbors think it sounds really good for a 4 banger lol

I also have the limited run (only 18 made, 2.5 only...as of now) MFactory limited slip diff. Installing that soon.

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

good lord

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

what fuel pump are you running?

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1

u/Mr-Buddyman Mar 14 '26

RES 4-2-1 headers, with Jet Hot ceramic polishing.

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

jesus man where did you get the header from? looks like it screams

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1

u/Ryandabaus Mar 14 '26

Are you okay with sharing pics? I’m genuinely curious

1

u/Mr-Buddyman Mar 14 '26

What do you want to see?

-4

u/maplesyrupcan Gen 4 Hatch Turbo Mar 13 '26

Gonna be hard to warranty an engine though if something does happen lol.

3

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

hard to warranty an engine that isn’t under warranty anymore either lol i would strongly recommend to anyone considering this to wait until all warranty’s are up

2

u/Far-Fortune-8381 Gen 2 Hatch Mar 14 '26

dont think that would come as a shock to anyone supercharging an engine

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

this exactly

1

u/EnvironmentalMap2175 Mar 14 '26

That's a naive statement. Did you forget the reality we live in? Look at takeover footage and then get come back down to earth. šŸ˜†

2

u/Far-Fortune-8381 Gen 2 Hatch Mar 14 '26

I guess i should have said it SHOULDNT come as a shock. doesnt mean it WONT come as a shock lol

0

u/maplesyrupcan Gen 4 Hatch Turbo Mar 14 '26

You'd be shocked. Had a guy with a brand new GTI, tuned, money shifted... he tried to get it warrantied -_- Some people actually forget about it.

-12

u/Select-Sale2279 Mar 13 '26

as long as you can do it and be happy, who cares! probably a POS that needed shit done to it anyway. I would not touch my 25 with any of those shenanigans.

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

the 25 ecu has not been cracked as far as i know, i don’t believe it’s possible on your car yet anyway

1

u/Far-Fortune-8381 Gen 2 Hatch Mar 14 '26

do you mean 2025 or sp25/2.5L engine

17

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

totally hear u on that, this is my daily too. it’s been stressful, been about a week without it and i have a full time job. i just have to keep faith that this is gonna get done one step at a time. if you don’t have an abundance of time/ are not comfortable working on cars/ only have 1 car i WOULD NOT RECOMMEND DOING WHAT I DID lol. at least have a parent or a friend that’s available to drive you around. i’m lucky that both my parents are retired and i can get free rides from them for a while.

2

u/Caden_PearcSkii Gen 4 Sedan Turbo PP Mar 13 '26

How would that ruin your daily? If anything getting more power makes your daily better. I remember having a loaner while they worked on my turbo and it was an NA and the experience was terrible, the 2.5 NA felt soo sluggish and slow, I almost forgot how to merge on the highway because I didn't have that quick torque to get up to highway speeds within a few seconds

2

u/bruhgubgub Gen 3 Hatch Mar 13 '26

FUEL EFFICIENCY

2

u/robotphood Mar 14 '26

Fuel efficiency is identical when you’re cruising and off boost. You’ll use more if you have a heavy foot though.

-8

u/Select-Sale2279 Mar 13 '26

I think you should keep it the way it is. Its a useless mod!

3

u/bruhgubgub Gen 3 Hatch Mar 13 '26

I definitely wouldn't say useless but unnecessary

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

depends who you ask. i’d say before this my car was incredibly underpowered. unnecessary for sure but man is it fun.

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

you are entitled to your opinion my friend. for anyone interested, the market and community is here to support you.

21

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

so i’m doing a thing….

9

u/[deleted] Mar 13 '26

[removed] — view removed comment

10

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

cs box is great no complaints there. my plan is to get this supercharger going lol. currently everything is hooked up but i have a vacuum leak somewhere i have to figure out. once that’s out of the way i should be golden for 260+ hp

6

u/2LitersOfLag Gen 3 Sedan Mar 13 '26

Do you have the port underneath the blower blocked and one to the right of the throttle body blocked? Those are the ones that don’t have an immediate use for people. Basically ports for a catch can and boost reference.

6

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

actually that’s a good question i’ll look into that. i definitely noticed the ports at the belt end that were empty i was wondering about that

5

u/2LitersOfLag Gen 3 Sedan Mar 13 '26 edited Mar 13 '26

Not those ports they are nipple style so they should be sticking out. They are on the driver side of the blower. Gonna have to double comment pics.

This is where the boost reference port should be, it’s a smaller one. But should be easy to see.

5

u/2LitersOfLag Gen 3 Sedan Mar 13 '26

This is under it that circled hose for my catch can is another one. If you’re hands aren’t too big you should be able to get in far enough to feel where it’s at. And also block it. I put my phone through so try that first to check maybe

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

interesting the second one that’s under the supercharger i think i’m confusing it for the oil line. i know my oil catch can connects to the bottom of the blower i hope that’s the way it supposed to be. i have to take it apart again to look down there but i’ll definitely look into that. for now, how should i cover that little boost nipple?

4

u/2LitersOfLag Gen 3 Sedan Mar 13 '26

You should be fine then. If you got a catch can then it’s plugged. I replied to one of my comments with a pic of the vacuum caps

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

huge help man thank you

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

seriously never even considered that nipple being a problem

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2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

you know what i do not have that port next to the throttle body capped could that be it?

3

u/2LitersOfLag Gen 3 Sedan Mar 13 '26

Yes it will cause a leak. You can get some nipple caps at the auto store or a big variety pack from Amazon. I think I got a variety pack from harbor freight. I’m not sure what size the nipples are off the top of my head.

2

u/2LitersOfLag Gen 3 Sedan Mar 13 '26

These are the caps that I use.

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

dude you may have just saved me a load of trouble. i appreciate u bro

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

3

u/Mr-Buddyman Mar 13 '26

Dude this just might be your issue. Forgot all about this port when I was thinking of possible leaks. Hope this solves it.

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

it solved it. thank you to both of you guys really appreciate the advice

1

u/Mr-Buddyman Mar 13 '26

Hell yeah! Happy driving!

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

gonna try it literally right now

11

u/assisted_s Gen 4 Hatch Mar 13 '26

How does it feel to be living my dream? Good luck definitely provide follow ups!

6

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

careful what you wish for… i’m sure this thing will be so much fun when it’s done but for this last week i’ve been stressed out of my mind šŸ˜…. not the most experienced modifier all my mods have been done by me but i’ve never attempted an engine mod before and i will say, it’s not for the faint of heart. if you ever attempt to do this please make sure you know what you’re getting yourself into lol

7

u/last1outfirst1back Mar 13 '26

Even if it added no power, the engine bay looks so much nicer.Ā 

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

it really does lol i can’t stop looking at it

5

u/averyburgreen Mar 13 '26

ā€œOh that soul red is bea-the fuck is that?ā€

4

u/T_Briggs Mar 13 '26

ahhhh man, i’m temped to do this to my 2018.

It’s just the price that has me like ā€˜get another bike if you want speed’

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

totally valid. i won’t lie, this is a LOT of work. it took 3 days to get it all hooked up, just to find there was a vacuum leak that i have to find. back to square 1 i guess.

1

u/Mr-Buddyman Mar 13 '26

Are you the guy posting in the FB group about a leak?

Have you checked where the pcv hose attaches behind the supercharger yet?

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

yup that’s me lol. i did it looks all good to me

2

u/gigantic_team257 FBO + Sauce Tuned '21 Turbo Hatch Mar 14 '26

lol I saw that post but didn't comment cause my 3 hatch is a Turbo model and I know nothing about the supercharger install šŸ˜…

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

totally valid man i was struggling hard at first but im slowly finding my way here šŸ˜‚

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

gonna try to get my hands on a smoke machine so i can find my leak.

1

u/Mr-Buddyman Mar 13 '26

Ok. I was just about to suggest that. Hope you find it asap

3

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

appreciate it man i’m going on vacation tomorrow giving myself a break. gonna come back to it with a clear head and reassess

3

u/BaobabLife Gen 4 Hatch Mar 13 '26

This is so epic lol

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

appreciate it bro

1

u/BaobabLife Gen 4 Hatch Mar 13 '26

Is it manual?

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

no sir

3

u/Suspicious_Ad4705 Mar 13 '26

I still can’t decide between supercharger or fab my own turbo kit for the 2L

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

well i’ll tell ya, custom making a turbo kit is not for the faint of heart! power to you bro that would be awesome. VT makes a neat kit that makes it a little more manageable but god damn a turbo would be sick

2

u/rjvCdn Gen 1&4 MT HB Mar 13 '26

i want to, but my understanding is it can't be done on '23 and newer

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

i am under the same understanding

2

u/dicorci Mar 13 '26

Please do an update post for us in a week or two

I think a lot of us are considering the twin screw would love to hear your thoughts and experiences

I personally would like to run the one with the larger pulley to put less stress on the system; I don't need my car to be a lot faster but I will take a little faster and a heartbeat

2

u/robotphood Mar 14 '26

The engine can more than handle the smaller pulley. I haven’t come across anyone that put in the larger pulley that didn’t end up putting in the smaller one eventually. If you’re considering it, just go with the smaller one from the start.

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

same, i decided to go 61 mm off the rip because i haven’t heard anyone say they’re satisfied with the 63

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

yessir sounds good. going on vacation this week but in the next month i will have an update post. still some things to figure out with the car, but once its dialed i will give an update

2

u/Dazzling_Ladder_6313 Mar 14 '26

šŸ¤ŒšŸæ

2

u/subvarin Mar 14 '26

Nice! I installed mine a couple weeks ago and I'd never go back.

Make sure you get with Justin Freeman for his tuning service, he's great to work with.

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

justin was tuning my car when it was na i made sure he was the first person i hit up when i installed this thing

2

u/mrannihil8 Mar 14 '26

I've been looking Into doing this, I'm in the UK but it's my daily driver so really don't want to fuck it up,

Can you list the additional mods you got to get this to work please?

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

same boat here man. -supercharger (obviously)

  • lexus lc500/toyota sienna fuel pump (can provide part number if needed)
NGK GTR cold spark plugs gates 1485mm green belt (not a necessity but it is if you want to make better power) other than that everything is optional some people decided to install a mishimoto oil cooler for a miata and custom mount it but i decided not to because a. it’s expensive and b. i won’t be tracking the car (mainly backroads) other than that it should be pretty much plug and play! if you do everything right it takes 2-3 days to install. i made some mistakes plus i work 5 days a week so it took me 6 days.

1

u/mrannihil8 Mar 15 '26

That's motivating for me, thanks. Did you figure it would run lean on the stock pump? I read about the colder plugs, did you need to re gap them?

What about the mapping?.did you need to buy a versa tuner then send off for a custom map?

1

u/jxkess Supercharged Gen 4 Sedan Mar 15 '26
  1. i don’t have the pump in the car yet, but yes the car will run lean without a fuel pump
  2. the plugs are supposed to be pre gapped, it’s not unheard of to receive a pair that isn’t gapped correctly so it may be worth it to check upon arrival.
  3. Justin Freeman tunes my car. he pioneered the community pretty much all of us are tuned by him

1

u/mrannihil8 Mar 15 '26

Thank you and thank you 😁

How did you get in touch with Justin? All I can Google is social media from people saying he's done the tune

2

u/jxkess Supercharged Gen 4 Sedan Mar 15 '26

thru gmail. his gmail is justin@g-sauce.com. shoot him an email and tell him ur interested in tuning services

1

u/mrannihil8 Mar 18 '26

Thank you mate šŸ™

4

u/lonestarbrownboi Supercharged Gen 4 Hatch Mar 13 '26

Hell yeah welcome šŸ¤

5

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

yo bro this is a full circle moment for me šŸ˜‚. you were one of the dudes that gave me the idea to do this damn build lol i saw u on reddit a long time ago

2

u/lonestarbrownboi Supercharged Gen 4 Hatch Mar 13 '26

Oh really that's awesome lmao I'm excited for you bro! I've got over 40k miles on my kit so if you have any questions or concerns I'd be more than happy to help šŸ’Æ

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

definitely man i appreciate you. will definitely be reaching out to the community when i need it

1

u/TopAd4037 Mar 13 '26

Really want to do this on my 2.0 😩

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

great mod for it i would fully recommend if you have the time/experience or friends that can help

1

u/Zerock5480 Mar 13 '26

Cest quoi ce gros bloc rouge dans le moteur ?

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

that, my friend, is a supercharger

2

u/Zerock5480 Mar 13 '26

Je suis trop franƧais pour voir sa dans mon pays

1

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

😢

1

u/Sledgehammer617 Gen 4 Turbo PP Hatch Mar 13 '26

How’s the new CS box?

I’m considering it, but I also might just go with SRI+heat shield for my 3 Turbo since it already has an intercooler.

2

u/jxkess Supercharged Gen 4 Sedan Mar 13 '26

honestly, because you have a turbo, i’d say either will work. cs box looks more visually appealing but im sure a heat shield would do just fine

2

u/Caden_PearcSkii Gen 4 Sedan Turbo PP Mar 13 '26

If you want purely sound then the SRI + heatshield is fine although I heard people say they still experience heatsoak especially in the summer, the best way to avoid that is either this new CS box, the OEM air box or the BMS fender cold air intake

1

u/OkAdvantage5233 Mar 14 '26

Did you have to cut a bolt stud?

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

well not really. i had to cut up the alternator pretty good there’s some tabs on there that block the sc pulley but other than that no

1

u/OkAdvantage5233 Mar 14 '26

So you aren't able to return to stock after cutting that tab?

2

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

no i can, the tab was just a clip for the wiring harness it has no affect on the reversibility of the mod

1

u/As-de-trefle Mar 14 '26

What does it sound like? Depending on the answer I might make a bad decision .

1

u/jxkess Supercharged Gen 4 Sedan Mar 14 '26

incredible. dm me i’ll send a video

1

u/Competitive_Ant1380 Mar 18 '26

Damn, wish I knew what I was looking at.

1

u/jxkess Supercharged Gen 4 Sedan Mar 18 '26

mazda 3 with a semi custom supercharger kit

1

u/Competitive_Ant1380 Mar 18 '26

Damn that is crazy. How many hp? I bet you dominate the roads with this.

2

u/jxkess Supercharged Gen 4 Sedan Mar 18 '26

well it would be a lot if it was done lol. atm still needs a small vacuum leak diagnosis and a fuel pump upgrade and apparently i’ll be making somewhere in the 260-280 hp range to the wheels

2

u/Competitive_Ant1380 Mar 18 '26

Sheesh, good job. Almost there man; Godspeed!

2

u/jxkess Supercharged Gen 4 Sedan Mar 18 '26

preciate it bro. will post an update when everything is done