Just installed JB4

[uwood]

Holy cow! That is the way they should come from the factory. Amazing difference. Now... onto the down pipe.

[shemeld_135]

just wait until you install the catless dp haha! have fun man

[b1aze]

Map5 should provide even better gains if you haven't turned that on yet.

[boxxa]

Is this the only performance mod you have done? Was debating installing this in my 135 but it would be the only mod off the bat and wondering if its worth it.

[uwood]

I have it on Map 5, with the flap open. I also have the BMS DCI installed.

[LAZ]

Its addicting man! Before JB4 i thought "MAN This car is FAST!!",,,now when the JB4 is off im like "MAN this car is SLOWER than a motha motha!!!...it brainwashes me and i feel like a 4 cylinder toyota can beat me in a race...135i Stock will never be the same again!!!

[Colt]

I turned my JB4 off to map 0 for half a day because I didn't remember how the car was without a tune....ended up turning the tune back on lol

[andnkuhn]

I just installed mine too the other day. G5 ISO. WOW.

just sooo soo responsive. let my boss drive it and he was terrified how fast it was haha.

I also installed the BMS DCI n55 intake a day later. not a huge fan of the louder noise. Iv driven with it for a another day and the noise has been less noticeable.
The intake def makes the throttle MUCH more 'FUN'.

I do wonder if the intake makes the can flap open (JB4) exhaust louder? My car just seems SOO much louder now..or is the loudness 100% due from the fan flap open and nothing to do with the bms intake?

[andnkuhn]

ps. I LOVE how much louder and gruggly it is now btw.

[bdoooh]

The phrase "this is how the car should have come" is invalid in this case. BMW would never release a car into production as not-smooth and not-linear as a JB4 tuned 135.. Just sayin'..

But I agree it's fun and fast as shit haha.

[runnin9z]

Originally Posted by bdoooh

The phrase "this is how the car should have come" is invalid in this case. BMW would never release a car into production as not-smooth and not-linear as a JB4 tuned 135.. Just sayin'..

But I agree it's fun and fast as shit haha.

Are you saying that the JB4 makes the car less smooth and less linear then stock? Sorry I just don't understand your wording.

Thanks

[Bmwbreed]

Originally Posted by runnin9z

Are you saying that the JB4 makes the car less smooth and less linear then stock? Sorry I just don't understand your wording.

Thanks

Well I think what he's saying is that a tuned 135 (especially a piggy back tune and not a software reflash) is probably never quite as smooth/gentle/efficient and blah blah blah as the car is stock from the factory. Or that no one will be able to tune it as smoothly as BMW could. I think that's what he means but most if the time a tuned car is still smooth so to speak as long as its done right.

[Bmwbreed]

Originally Posted by bdoooh

The phrase "this is how the car should have come" is invalid in this case. BMW would never release a car into production as not-smooth and not-linear as a JB4 tuned 135.. Just sayin'..

But I agree it's fun and fast as shit haha.

Naw man they'd never release a car into production that cost 20,000 less than an m3 that could keep up with and potentially beat it which is what a tuned 135 can do. Can't piss off all the rich customers who can afford them and then they get mad when the cheaper one beats them.

And I love my jb4 as well btw. I'm full bolts ons now and the difference is just amazing though where I live there's not much room to open it up. The car is definately louder with flap open and deeper so the xtra noise is prolly a combo of can flap open and the intake.

[themellly]

Originally Posted by boxxa

Is this the only performance mod you have done? Was debating installing this in my 135 but it would be the only mod off the bat and wondering if its worth it.

It literally makes the car 1000x more fun. If you're thinking about a JB4 you should also look into adding other mods to make the tune more powerful. It's said to add 80-100whp, the more mods the more hp. And that kind of extra power is amazing

[robertmac305]

Originally Posted by Bmwbreed

Naw man they'd never release a car into production that cost 20,000 less than an m3 that could keep up with and potentially beat it which is what a tuned 135 can do.

you need way more then just a tune to beat a stock m3 bro. You need downpipes, inner cooler, intake, and race gas.

but you cant compare a modded car to a stock car....


why do ppl argue that it makes no sense to me to race a modded car to a stock car..then ppl feel awesome when a 400 whp 135 beats a stock m3...

the day a modded 135 beats a modded supercharged m3 then that will be something to brag about...

as for now...NO modded 135i is touching a super charger m3 e92...or even a turbo e46 m3...

yawns...

[Lmaiuri]

^ misinformed post is misinformed. M3's are pushing around 350whp. A jb4 tuned car with race gas will push 340whp or even more and edge out the m3. m3's are pigs at around 3800 lbs too. And it is inter-cooler, not innercooler. a jb4+catless DPed 135i will walk an e92 m3.


And of course it isn't touching a supercharged e92 or turboed e46 because those applications weren't even forced induction in the first place. Of course a 10-20k kit on a 414 hp v8 will beat a stock turbo 135i with FBO, maybe. You're arguing NA vs FI in the first place and then adding FI to the NA cars and then saying you can brag then? Dumping 15k into your car to make it fast in a straight line is a dummy thing to do anyway. I want a well balanced machine, not a surgey drag racer.

I get what you're saying modded vs unmodded is unfair, but the m3 comes with over 100bhp more than the 135i in stock form. for ~1k if you do the labor you can have a 135i pushing close to 400 whp. And factor in the price of an m3 being 20k-30k more I just believe the 135 is a better buy and more fun. That being said, the new FI m3 will be something for the books.



Although that would be cool if I had 15k .

[foghat]

Originally Posted by robertmac305

you need way more then just a tune to beat a stock m3 bro. You need downpipes, inner cooler, intake, and race gas.

No you don't. At least not in a straight line.

[alexmtl_135i]

Originally Posted by LAZ

Its addicting man! Before JB4 i thought "MAN This car is FAST!!",,,now when the JB4 is off im like "MAN this car is SLOWER than a motha motha!!!...it brainwashes me and i feel like a 4 cylinder toyota can beat me in a race...135i Stock will never be the same again!!!

Having the same feeling right now, wondering if something is wrong with the car lol. I may have to put the JB4 back on!

[katsooba]

just get the JB4 cobb ap flash with the JB4 piggy if you want better results and tuning

[Bmwbreed]

I think you missunderstood my point. The original poster said the car should have come this way from the factory. I was just explaining to him most likely the reason it didn't is because it would have out performed the 335is an would put it a lot closer to the performance of a stock m3 for a lot less money. And if the car would have come this way from the factory it would be stock against stock. And when I said a tuned 135 I was referring to one with full bolt ons as well intake down pipe inter cooler and so forth.

I'm not the kind of guy who mods my car so I can try to crush more expensive stock cars. I'm not trying to crush anything on the road. I do it strictly for my enjoyment. But I know lots of guys who do it for the other reason and it really irritates me when they brag.

All I was doing was stating my opinion on the OPs question as to why I feel the 135 didn't come from the factory with the performance jump the jb4 gives it and I think that's because it would have put it too close to the performance of an m3 and it would have surpassed the 335is's performance. And if the 135 had come this way then you would be comparing stock to stock. As I said I don't compare modded to stock as a whose better cuz that's not fair and makes no sense your right. But it's just my opinion to his question. If you don't agree that's cool too

Originally Posted by robertmac305

you need way more then just a tune to beat a stock m3 bro. You need downpipes, inner cooler, intake, and race gas.

but you cant compare a modded car to a stock car....


why do ppl argue that it makes no sense to me to race a modded car to a stock car..then ppl feel awesome when a 400 whp 135 beats a stock m3...

the day a modded 135 beats a modded supercharged m3 then that will be something to brag about...

as for now...NO modded 135i is touching a super charger m3 e92...or even a turbo e46 m3...

yawns...

[Bmwbreed]

Originally Posted by Lmaiuri

^ misinformed post is misinformed. M3's are pushing around 350whp. A jb4 tuned car with race gas will push 340whp or even more and edge out the m3. m3's are pigs at around 3800 lbs too. And it is inter-cooler, not innercooler. a jb4+catless DPed 135i will walk an e92 m3.


And of course it isn't touching a supercharged e92 or turboed e46 because those applications weren't even forced induction in the first place. Of course a 10-20k kit on a 414 hp v8 will beat a stock turbo 135i with FBO, maybe. You're arguing NA vs FI in the first place and then adding FI to the NA cars and then saying you can brag then? Dumping 15k into your car to make it fast in a straight line is a dummy thing to do anyway. I want a well balanced machine, not a surgey drag racer.

I get what you're saying modded vs unmodded is unfair, but the m3 comes with over 100bhp more than the 135i in stock form. for ~1k if you do the labor you can have a 135i pushing close to 400 whp. And factor in the price of an m3 being 20k-30k more I just believe the 135 is a better buy and more fun. That being said, the new FI m3 will be something for the books.



Although that would be cool if I had 15k .

Thank u sir. I think he totally missunderstood the point I was trying to make which I spelled out for him now

[LAZ]

Originally Posted by robertmac305

you need way more then just a tune to beat a stock m3 bro. You need downpipes, inner cooler, intake, and race gas.

but you cant compare a modded car to a stock car....


why do ppl argue that it makes no sense to me to race a modded car to a stock car..then ppl feel awesome when a 400 whp 135 beats a stock m3...

the day a modded 135 beats a modded supercharged m3 then that will be something to brag about...

as for now...NO modded 135i is touching a super charger m3 e92...or even a turbo e46 m3...

yawns...

my moded 135i beats a stage 2 supercharged e46 m3. My buddy has one and i take him by about 1.5 cars lengths...