[YanniPakravanE90]

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!

[eyim1988]

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.

[YanniPakravanE90]

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

[eyim1988]

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.

[fishbone0701]

I just put it on a couple of weeks ago with a cp, intake, and catless dp and it makes a good difference.

[YanniPakravanE90]

if my car was made after march of 2011 i will need harness B correct? or does that have nothing to do with anything?

[fishbone0701]

Yes but I would make sure and look at the harness pics and compare. Nothing worse than buying it and it being wrong.

[YanniPakravanE90]

true i will def check it out thank u

[mrj25]

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.

[eyim1988]

it is harness b!

[SRT14PimPin07]

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...

[jeff2.0t]

Originally Posted by SRT14PimPin07

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

[SpartanGA]

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.

[YanniPakravanE90]

if i have a dp and akrapovic exhaust which maps would b most effective for me?

[mrj25]

Originally Posted by YanniPakravanE90

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).