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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning JB4 on 228i

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      10-07-2014, 02:29 PM   #1
joshbromberg
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JB4 on 228i

I am looking for feedback from anyone who has put a BMS JB4 on their 228i. I'm definitely thinking about it as I want more performance from my car. Can you notice any real difference according to your butt dyno?
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      10-07-2014, 04:30 PM   #2
VMRWheels
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Quote:
Originally Posted by joshbromberg View Post
I am looking for feedback from anyone who has put a BMS JB4 on their 228i. I'm definitely thinking about it as I want more performance from my car. Can you notice any real difference according to your butt dyno?
Butt dyno says Hopefully, actual dyno very soon.

Had my buddy with his M235i try it out.. and he claims it at least "feels" quicker than his car (stock).
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      10-08-2014, 02:07 PM   #3
e30if
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Definitely makes a difference, haven't dyno'd my car but the butt dyno sure notices it.
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      10-10-2014, 11:51 PM   #4
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Had it on my F10 528i, same motor as the 228i. JB4 works wonder.
Based on my butt dyno, you get the gain as it advertised. I would say 30hp 40tq gain.
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      10-13-2014, 12:25 PM   #5
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Quote:
Originally Posted by joshbromberg View Post
I am looking for feedback from anyone who has put a BMS JB4 on their 228i. I'm definitely thinking about it as I want more performance from my car. Can you notice any real difference according to your butt dyno?
You can definitely notice a difference, had it on my F30 328 .
Car is quicker to respond, builds boost a lot faster and obviously targets higher target boost
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      11-24-2014, 11:55 AM   #6
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How does the tune affect gas mileage under non aggressive driving? Also does this void the warranty?
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      11-25-2014, 10:08 PM   #7
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Quote:
Originally Posted by d1ez3 View Post
How does the tune affect gas mileage under non aggressive driving? Also does this void the warranty?
Should not affect if you do not drive aggressively.
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      12-11-2014, 12:48 PM   #8
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Just recently switched from the AFE scorcher module which put down 301 hp to the wheels on the dynapack to the JB4 stage 2 with E85 wires and I have to say it is a night and day difference. I'll be doing a fully custom tune based off the mods that I have on my vehicle. Can't wait to hit the high 300 hp mark

One thing to note... I do have full bolt ons including a larger turbo.
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