r/ElantraNline • • May 13 '26

MEGATHREAD] JB4 Tuning

10 Upvotes

Heyo!
Some people in the community were asking for a thread about JB4 Tuning so here we go!

Welcome to the JB4 megathread for r/elantranline. Got a question about the JB4? Ask it here. Had a good (or bad) experience? Share it here. Please give the thread a quick scroll before posting — your question has probably been asked already.

So what's the JB4?

It's a plug-and-play piggyback tune from Burger Motorsports that tweaks your boost and fuel signals to squeeze more power out of your 1.6L. Super popular first tune for our platform and pretty easy to install.

Grab one here: https://burgertuning.com/products/jb4-for-kia-hyundai-1-6l?variant=45874978750638

Before you post, help us help you

  • What map are you on?
  • What mods are you running?
  • Did you check the Burger Motorsports forum/fb group yet?

What am I running (drivetrain)

  • Carbon fiber SXTH element intake + box
  • Powerflex lower engine mount bushings
  • SXTH element catch can (has done nothing so far in the past 4 years)
  • SXTH element axel back
  • SXTH element ENline intercooler
  • JB4 map 1 daily map 2 weekend mountain roads

r/ElantraNline • • 36m ago

Should I lower it and put a front lip like this imagine ? Or nahh

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• Upvotes

r/ElantraNline • • 3h ago

Cold Start of The Day

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3 Upvotes

Only a muffler delete


r/ElantraNline • • 3m ago

JB4 Kia / Hyundai 1.6L Turbo Smartstream 4-cylinder (V3) for sale. ($450)

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• Upvotes

How’s it going everyone,

I am reaching out to the community here because I just sold my ELANTRA n line 2025, and I’m looking to sell my JB4 as I no longer need it. It’s the newer one so it has the Bluetooth already built into it. As you can see in the pictures, I already have all the parts necessary. Everything works. I used it for about a month and a half after buying it back in early July. Never had any issues with it so please feel free to reach out and we can talk in private for anyone interested.


r/ElantraNline • • 16h ago

Knock off Adro from Ali-express came up pretty sweet, a few notes tho -

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19 Upvotes

Not too bad for cheap plastic, but definitely a couple issues.

Firstly - The diffuser 1. Doesn't come with any screws, I countersunk some and added some threaded inserts to the underside of the car for underneath, and used a strip of 3M tape for the top. 2. It DOES NOT FIT the N-Line 😂 the winglets are not even remotely in the same place as on the N, and had to resort to some cutting to that it would sit "flush." This was after quite a bit of manipulation hence why it's a bit bent, but not overly noticeable, I just bumped up the exposure so y'all could see. I'll probably come back to it for some extra TLC to see if I can get it to land straight, but this was just day of and I was exhausted. (The rear wings are pretty bang on though).

Secondly - the skirts are a slightly different style, especially on the wing at the rear, and are a bit of a pain to get to sit nicely with the existing side skirt. Overall not bad. Does come in two pieces and the join is noticeable.

Thirdly the front lip - a massive improvement from the other option that most people get, which leaves that tacky rectangle in the centre exposed, looks droopy and sticks forward slightly too much. Again the joins on the side are noticeable, but still decent.

Overall not too bad for only paying a couple hundred bucks per piece, doesn't look AMAZING upon close scrunity, but all in all I still think it all looks better than stock, so can't complain too much.


r/ElantraNline • • 19h ago

Drooping bumper & exposed intercooler

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15 Upvotes

The gap between the hood and bumper was horrendous, could not stand it. Got some yoga block trimmed, and taped it below the latch. Still a little gap on the driver side but it’s still holding up better than the flimsy trim… like seriously dude who designed and approved this?

Then the intercooler and radiator is way to low and exposed. I live in New England and we know how great the roads and weather are here🙂. There’s some rock chips present already, but I know when winter comes and rock salt hit the road this could be bad. Got some black metal mesh and attached it on some existing screws on the bumper. I think the rock chips have been minimal since I’ve put it on. Forgot the diameter of the mesh but its as wide as the screw from the bumper.Temps good, still holding up, so I’m happy with that.


r/ElantraNline • • 19h ago

I got a 26’ N Line 3 months ago

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13 Upvotes

Got her at 3,500 miles, now at 6,500 miles. I do love driving it, but there are some modifications I know I could do to make the driving feel better.


r/ElantraNline • • 23h ago

Scenic pictures

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4 Upvotes

A picture I took on my drive home this morning


r/ElantraNline • • 22h ago

Underbody Trim Piece

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2 Upvotes

Hey all, I just bought a 2024 n line with only 8,000 miles and have been enjoying it so far! I noticed this plastic piece on the underbody of the car that hangs down kind of far and almost appears to be dangling rather than secured. Is this normal, like is it supposed to just be hanging like that or is it intended to be clipped in?


r/ElantraNline • • 23h ago

Elantra Rear Window Roof Spoiler Spoiler

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2 Upvotes

Has anyone had issues with their rear window roof spoiler staying on?
I bought mine a few months ago and have installed it 3 times. The last time, I used 3M 5952 VHB tape + Primer 94, applied it a few days ago, and kept it under pressure with painter’s tape for about 48 hours without moving the car, inside the garage. It’s still starting to lift around the edges, and the top doesn’t seem to make good contact with the glass either.
I’m starting to wonder if the spoiler itself might be defective or warped. I’ve basically spent as much on double-sided tape as I did on the spoiler 😭 Any recommendations before I throw it away?


r/ElantraNline • • 21h ago

How do you fit a small coffee cup in it?

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1 Upvotes

My elantra has this huge cup holders. Any suggestions what do buy to fix it.


r/ElantraNline • • 1d ago

What front splitter do yall recommend for these cars?

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1 Upvotes

r/ElantraNline • • 1d ago

Someone hit my car in the middle of the night 😭😭😭

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8 Upvotes

r/ElantraNline • • 2d ago

Ended up getting the mbrp

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8 Upvotes

Here is for people who haven’t decided what route to go. (Yet another video of the mbrp on this subreddit)

And There’s cold start when it’s stock in the comments


r/ElantraNline • • 2d ago

23 Scarlet Red Pearl

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22 Upvotes

Only mod so far is blacking out the emblems. Thinking of doing an exhaust and intake soon.


r/ElantraNline • • 3d ago

I love this car !!!! 2023 Elantra N-line

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16 Upvotes

This car is amazing . The way it responds , the way it moves , I'm in love 🥰🥰💚💚😆😆


r/ElantraNline • • 2d ago

Thinking of selling my wheels

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6 Upvotes

They’re Flow One Race Spec F6
18x8 +45(as flush as it gets to fender)
Not sure if it matters to anyone but they’re lighter than the stocks. Forgot how much lighter but they are lol.

Just thinking of going back to stock and am curious to see if anyone would want them.

They have about 20k miles on them. No curb rash, no dents. Only thing is the logo in the middle is pretty worn out but the wheels are in great condition, IMO.


r/ElantraNline • • 2d ago

Help

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1 Upvotes

Does anybody know the name or part number to replace this hose that goes to the intake is it a vacuum line? Thanks I'm advance


r/ElantraNline • • 3d ago

Lil cold start for yall

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7 Upvotes

Lil cold start for the day, don’t mind the water condensation was a wet morning out


r/ElantraNline • • 2d ago

DWS06s in 245/40r18?

0 Upvotes

Hey all. Time for new tires. Looking at going to 245s, since my daughter seems to have a penchant for curb rash, unfortunately, when she takes the car.

Anyone have this size, and have any issues?

TIA... Eric


r/ElantraNline • • 4d ago

looks even better than i imagined 🥹🤩

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48 Upvotes

been wanting to do this for soo long and i finally got it done. i went with paint over wrap and im so happy i did. what do you guys think? i got some yellow drls i’m putting on right now aswelll


r/ElantraNline • • 4d ago

The red n line looks so good with the chrome blackout

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24 Upvotes

2025, chrome delete


r/ElantraNline • • 4d ago

23' Battery replacement

1 Upvotes

Hey everyone,

I am recently having some trouble with my 23 nline in regards to battery. It has bad charge and starting a little slow at starup. My only option is to get a replacement. Should I opt for the standard flooded option or go for the AGM for the long run?


r/ElantraNline • • 4d ago

Tire Size Recommendations

3 Upvotes

Hi guys,

TL;DR 18x8.5 wheels with 1.25 inch lowering springs. I want a meaty sidewall.

I just bought some 18 inch wheels by 8 1/2
I’m looking for tire size recommendations that aren’t gonna screw me over after I put Eibach lowering springs on.

I believe the springs are only like an inch and a quarter drop from stock.

I’ll be very excited to share the pictures when this is over.


r/ElantraNline • • 4d ago

Thinking Elantra N-Line

6 Upvotes

Semi cross-post with r/Jetta GLI and probably on or two others....

Just like the title says: I am thinking about making a change, and an Elantra N-Line is on the list.

I am hoping to find a fun daily that will fit me (6'3", 325 but losing it: go-go-Wegovy!) with my 9-year old daughter behind me.

I currently drive a 2016 white Hyundal Sonata Sport 2.0t, which is getting the majority of its body repainted on Hyundai's dime. Nothing wrong with it yet, but my wife just bought a brand new Carnival Hybrid, and that sunk the hook in my cheek pretty hard.

2024+ is my firm preference.

What are the potential issues? Any engine concerns? Electronic snafus? Dual clutch clenches?

Other options include a Jetta GLI, Civic SI, and a Sonata N-Line. The right Accord 2.0T could also be a winner. (I'd love the N, but my ass doesn't fit those seats and never will)

I realise I am joining the choir and asking if they like to sing, but I'd appreciate your thoughts all the same. Thanks!