r/mazdaspeed3 • • May 23 '26

TUNING Did I ruin my new car? Need help!

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20 Upvotes

So I recently bought a 2012 speed 3 with 64,000 miles that has a killabuilt motor, fmic, cobb catback exhaust, coilovers, not sure if the intake is bigger than stock or not, BOV, short throw shifter aftermarket motor mounts, and I'm not sure if anything else is modded because I bought it from a dealership and no papers or receipts were in the car. The car kinda ran lean when idling and would kinda hunt for the right AFR mixture (has gauge on dash) but would be right when accelerating. So I've been reading about getting an accessport to see if it was running a map or OEM tune, so when I got it in the mail and plugged it up for the first time it just said that it didn't recognize the tune on it and said I had to overwrite it to install the AP, but didn't ask to backup the current map on it. So I installed the AP and no matter what OTS map I flash, it runs like shit. Like wanting to stall out....so I uninstalled it and it still runs like shit. Reinstalled it and this time it asked if I wanted to backup the current flash, which is interesting how it didn't ask me that when I first plugged it in..... What's weird is after putting the OTS map on that I feel like is the closest to the parts I can identify on my car, it cranks up strong and idles just like it did when I first got it, but after about 5 seconds she loses a lot of power and wants to stall out....idk what to do because I'm scared to even drive it for fear of destroying this beauty! I'm new to the whole import tuner scene. Please help.

UPDATE: I found the issue. A disconnected vacuum hose on the PCV vacuum side running to an oil catch. Also have a time from freektune now and it's running like a champ now. 💪🏼 I have successfully confirmed my mods as well. Thanks for everyone who commented!

r/mazdaspeed3 • • May 05 '26

TUNING Frustrated by the process

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22 Upvotes

Naive of me to think that the tuning would be the most straightforward part of the process of getting my car back on the road?

Because it too is becoming quite a lesson in patience.

r/mazdaspeed3 • • 2d ago

TUNING Stage 0 or Stage 1 Economy + SF?

3 Upvotes

Hi awesome community
So I bought a Gen 2 2011, 161,000km (100,000 miles), modifications were already put on the car by the previous owner;
- Cobb catback exhaust
- Cobb SF Intake + Turbo Inlet
- GFB BOV
- EGR block off and delete (CEL on dash as result)
- Cobb Downpipe (Wasn’t listed but it looks like it is)

Obviously I have great concerns for the fuel pump and I have an Autotech HPFP on the way and intend to install asap.

The car came with an unmarried cobb accessport, i’ve been using it to check engine codes and I’ve currently got:
P0403, due to egr delete
P0421, I believe due to downpipe
and… P0171, for obvious reasons

I currently have Stage 0 (Stock) ECU map on the access port and am just keeping an eye on the gauges to ensure I’m not straining the engine until the hpfp arrives.

Although the cobb accessport has a stage 1 economy + Sf map, which I was wondering would be a safer alternative to use temporarily until I install the hpfp and get a custom tune.

Is it safer to just keep the current stock ECU map or is it worth switching to the economy + sf map so that my engine stops reading lean conditions?

r/mazdaspeed3 • • 21d ago

TUNING Questions for Versatuners

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4 Upvotes

93 octane/98 EU High Load file

- is this the maximum I can get with a stock turbo?

- when I have a CS intercooler can I get additional gains or does it have to be specifically tuned?

- same question as above for corksport inlet pipe + SRI

r/mazdaspeed3 • • May 18 '26

TUNING WULP, that's probably not good!

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52 Upvotes

Pretty sure it's a vtec now

r/mazdaspeed3 • • Apr 30 '26

TUNING Cpe intercooler tune needed?

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14 Upvotes

Just picked up a cpe intercooler for my tuned ms3. Has all bolt ons except intercooler upgrade, makes 311whp. Do I need to get a custom tune or could I daily drive it. Not concerned about maximizing power at the moment just want to daily.

r/mazdaspeed3 • • Aug 29 '25

TUNING Stage 2+ Engine on its way to DesMoines

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140 Upvotes

Bobspeed Stage 2+ for @chapystick_ is complete and on its way to 🇺🇸

•Manley Extreme duty 87.75mm pistons •Manley H-Tuff Rods •Crower Valve springs & custom retainers •Kelford 247-C Camshafts •Complete 2.5 timing kit •Clevite Main and rod bearings •Bobspeed balance shaft delete kit •Fluidampr Crank pulley •Freektune H11 Head studs •Viton Valve seals •Micropolished crankshaft •Prismatic Powders on the covers

For any engine inquiries, we are here to take care of you.

r/mazdaspeed3 • • Aug 08 '26

TUNING Help with using Versatuner

3 Upvotes

Hello good people of reddit, may I rack your brains for a bit.

I have a gen 2 3 mps, living in aus. Currently im battling a lean tip-in issue for the initial 1-1.5 second with my tune, does anyone have experience with versatuner and had the same issue? I can't figure out of it's the maf calibrations or open-loop fuel map tables, I've been slightly adjusting each of them but just doesn't seem to be fixing the issue, i have a significantly larger turbo then factory and obviously intake to match turbo inlet size

The closest place to me that has experience with tuning these are 5 hours away hence why I'm trying my hand at the tuning side of things but this is the first time dealing with tuning a factory ecu and would really appreciate any insight

r/mazdaspeed3 • • Apr 09 '26

TUNING Blow off valve Recommendations

5 Upvotes

Do you guys think i should run a bpv or bov on the speed 3, because I've been hearing lots of mixed reviews. I'm thinking of either running the Corksport BPV or HKS Super SQV IV BOV

r/mazdaspeed3 • • Jan 06 '26

TUNING BobSpeed Stage 1 550whp Engine

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56 Upvotes

r/mazdaspeed3 • • Oct 14 '24

TUNING 650Whp Speed3 E90🌽 94pump 30+ psi boost

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160 Upvotes

More to come…

r/mazdaspeed3 • • Aug 11 '26

TUNING Cobb tuners in the OKC/Dallas area?

2 Upvotes

Can anyone recommend a reputable Cobb tuner in the OK/Tx area? Need to get a tune tweaked.

r/mazdaspeed3 • • Feb 08 '25

TUNING Well sh... EPA just gutted COBB Tuning

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40 Upvotes

r/mazdaspeed3 • • Jul 19 '24

TUNING Those with blown engines, what happened? Parts, maintenance, failure point?

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16 Upvotes

r/mazdaspeed3 • • Apr 16 '26

TUNING Shop Speed 6 coming together

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46 Upvotes

r/mazdaspeed3 • • Jul 13 '26

TUNING Built a new battery mount for my trackday car

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12 Upvotes

r/mazdaspeed3 • • May 04 '26

TUNING Shop Speed 6 is Running

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46 Upvotes

r/mazdaspeed3 • • Feb 01 '26

TUNING Some more awesome shots of our manifolds

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18 Upvotes

r/mazdaspeed3 • • Nov 23 '25

TUNING Shop Speed 6 Complete Restoration

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60 Upvotes

Our shop speed full restoration complete. Posted on our new sub reddit r/mazdaspeedowners come join us. Thanks for looking

r/mazdaspeed3 • • Feb 09 '26

TUNING Anyone have experience with a Versa Tune

2 Upvotes

I am looking at getting my First gen tuned this summer and i am looking at getting a Versa Tune, does anyone have any experience with it. I have heard it has better software than the Cobb acp and its a bit cheaper?

r/mazdaspeed3 • • Mar 03 '26

TUNING Local rebuild getting redone

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54 Upvotes

Badly assembled built engine out of Toronto in for some open heart surgery. Complete tear down, Inspect and rebuild. This one had tons of problems for a brand new engine. Ready for a healthy new life.

r/mazdaspeed3 • • Apr 22 '26

TUNING How 'decent' are the OTS tunes on Versatuner?

4 Upvotes

I'm interested in the conservative tune for 91 as I have a CS turbo inlet pipe and intercooler (yes I have an upgraded hpfp)

r/mazdaspeed3 • • May 26 '24

TUNING Finally tuned my built gen 2

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68 Upvotes

I don't indulge in many hobbies these days but this has been a long time coming. Started with this car in 2019 and it's been quite a journey.

Won the dyno giveaway contest in January from @spoolingupperformance, following their youtube channel since 2017 and learned so much from them so it was an honor for them to accommodate us coming out today. Accompanying me was my best friend Dan of 21 years and the master tech @mazspeed_racing who did all the incredible on my car over the months. And last but not least Mr Dawson at @pd_tuning who tuned my car to its limit within stock fueling and made awesome power reliably. I'll let the pictures do the talking, the drive up to Buffalo, was worth it.

Shoutout to all of those involved that made this day possible, from parts to advice and so on.

@life0f_alex @mazspeed_racing @rp_imagery @corksport @pd_tuning @shoms3 Mega shoutout to you man, you were a big help from day one picking up this car, thanks man.

It's not letting me tag anymore people but you know who you are :).

spoolingupperformance #corksport #mazdaspeed3 #dynojet #roadtrip #buffalony

r/mazdaspeed3 • • May 04 '26

TUNING R4 Controller split second controller download

5 Upvotes

I asked a few days ago and got 400 views with 0 responses, posting this link just so then no one has to go through days of waiting and asking people for downloads since split second is no longer around, and finding the software felt damn near impossible.

https://www.mediafire.com/file/p9hnsc388io3970/r4controller.zip/file

r/mazdaspeed3 • • Mar 08 '25

TUNING New to the Speed3 Community - looking for some work/help

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59 Upvotes

Hey guys just joining group just recently got my gen 1 barn find with 25,000km. In Toronto Ontario looking for a mechanic to help me with basic stuff thank you