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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4?



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      04-24-2012, 08:34 PM   #1
YanniPakravanE90
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JB4?

i have a 2011 335i E90 N55 and i was looking into putting in a jb4 stage 2 in my car and i was wondering if anyone has had any problems or complaints with this chip? is it safe for the engine will i endure any problems with BMW? please give your insight it is much needed thank u!
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      04-24-2012, 08:37 PM   #2
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search! this has been answered many times. But in short, as long as you take it off before a dealer visit which will be anywhere from 10 minutes to a hour, it will be fine. thousands of people have it on their cars so i am pretty sure its safe.
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      04-24-2012, 08:41 PM   #3
YanniPakravanE90
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as long as it doesn't give me any engine failure or anything like that id love to do it, I've heard it gives up to 60 HP
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      04-24-2012, 08:44 PM   #4
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oh you'll def feel the extra power and torque. When you first turn it on you might get a check engine lights while driving. pull over and turn off car, wait a minute and then turn it back on. It should be gone for good.
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      04-24-2012, 08:48 PM   #5
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I just put it on a couple of weeks ago with a cp, intake, and catless dp and it makes a good difference.
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      04-24-2012, 08:54 PM   #6
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if my car was made after march of 2011 i will need harness B correct? or does that have nothing to do with anything?
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      04-24-2012, 08:58 PM   #7
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Yes but I would make sure and look at the harness pics and compare. Nothing worse than buying it and it being wrong.
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      04-24-2012, 09:13 PM   #8
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true i will def check it out thank u
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      04-24-2012, 09:13 PM   #9
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it is safe and since you are in the L.A. area, Terry from BMS is not too far. he's out in simi valley and his support through email is great. i recommend to get it. the JB4 stage 2 is the best bang for your buck on the N55.
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      04-24-2012, 09:14 PM   #10
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it is harness b!
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      04-25-2012, 12:04 AM   #11
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DO it and never look back. Just make sure you use it correctly. Map 1 if your stock, Map 2 if you have a Downpipe or high octane gas, Map 3 if your running meth. Follow that and you won't screw anything up...
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      04-25-2012, 05:44 AM   #12
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Quote:
Originally Posted by SRT14PimPin07 View Post
DO it and never look back. Just make sure you use it correctly. Map 1 if your stock, Map 2 if you have a Downpipe or high octane gas, Map 3 if your running meth. Follow that and you won't screw anything up...
Except the clutch
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      04-25-2012, 07:55 AM   #13
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I added a Procede 2 weeks ago. Pick one and go with it. Great increase in power and torque. Be sure to try it with DSC off. Becomes a beast in 1st and 2nd.
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      04-26-2012, 08:11 PM   #14
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if i have a dp and akrapovic exhaust which maps would b most effective for me?
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      04-27-2012, 03:14 PM   #15
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Quote:
Originally Posted by YanniPakravanE90 View Post
if i have a dp and akrapovic exhaust which maps would b most effective for me?
Map1 for everyday use. To run Map2 would require the NOS octane booster on top of what you already have (catless dp + exhaust).
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