jb4 no boost under certain rpm?

Andrewe92 · 06-21-2013, 10:29 AM

I'm still reading into the n55 as much as I can.. quick question tho. from my understanding when the n55 is untouched it doesnt give boost unless you go over a certain rpm? 2500 i think? but does this change with the jb4 and also if i do throw in a jb4 is it 100% necessary to get a charge pipe? I obv dont want the stock one to break but i also dont wanna spend to much just want a little more power thats all.. thanks in advance

mashimarho · 06-21-2013, 11:00 AM

Boost does not really "kick in" until about 2400? I think..

The JB4 will not change that, rather it will give MORE boost.

The CP is not required. It will just help the longevity of the CP itself, because more boost = bye bye Stock plastic CP

eyim1988 · 06-21-2013, 11:29 AM

first mod should be chargepipe

Andrewe92 · 06-21-2013, 11:34 AM

Quote:

Originally Posted by eyim1988

first mod should be chargepipe

under stock psi? lol is oem thattttt bad

hetzle · 06-21-2013, 01:12 PM

Quote:

Originally Posted by missilewarriorz

under stock psi? lol is oem thattttt bad

Short answer: Yes.

TrentOSU · 06-30-2013, 11:42 PM

Does a charge pipe void the warranty?

divisionbell77 · 07-01-2013, 05:39 AM

Quote:

Originally Posted by TrentOSU

Does a charge pipe void the warranty?

It shouldn't, but it will.

avol3xo · 07-01-2013, 08:24 AM

Never had trouble with my stock cp under map 1 settings, but when you say a "little" power? You understand that dollar for dollar the JB4 is an amazing amount of power gained.

TrentOSU · 07-01-2013, 08:42 AM

Quote:

Originally Posted by avol3xo

Never had trouble with my stock cp under map 1 settings, but when you say a "little" power? You understand that dollar for dollar the JB4 is an amazing amount of power gained.

Is map one just for a stock car? Like the 50-60whp gain? With no other modifications?

avol3xo · 07-01-2013, 08:55 AM

Quote:

Originally Posted by TrentOSU

Quote:

Originally Posted by avol3xo

Never had trouble with my stock cp under map 1 settings, but when you say a "little" power? You understand that dollar for dollar the JB4 is an amazing amount of power gained.

Is map one just for a stock car? Like the 50-60whp gain? With no other modifications?

Correct, if you get into any other mods (DP, FMIC, E85, etc) then you will definitely need an aftermarket CP, no questions asked. I ran on Map 1 for the last 6-7 months even a few 1/4mi track days with no issues. Just upgraded to a BMS CP because I'm going the E85 route.

hetzle · 07-01-2013, 01:38 PM

Quote:

Originally Posted by divisionbell77

It shouldn't, but it will.

Take it off and put the stock one back on if you have to go in for any warranty work, it's a 30 minute job at most. The dealer isn't going to pop your hood, see it, and then void your warranty. They honestly don't care/have the time to care, it's BMWNA you have to worry about since they're the ones who handle large warranty claims

Quote:

Originally Posted by TrentOSU

Is map one just for a stock car? Like the 50-60whp gain? With no other modifications?

Yep, the JB4 was the best money I've ever spent on my car with my DP coming at a close 2nd. You really should get the charge pipe, a lot of people have blown them up at stock boost levels AND it's pretty cheap

SflBimmer8484 · 07-01-2013, 02:57 PM

Charge pipe should be the first mod!

Ml3456 · 07-30-2013, 09:43 AM

Is Map 1 the same on the Stage 1 and stage 2 versions? Not planning on tracking. It's a E93 and I'm not adding a roll bar!! Stage 1 cheaper and would use the savings to replace the cp.

Thanks, ML

hetzle · 07-30-2013, 01:45 PM

Quote:

Originally Posted by Ml3456

Is Map 1 the same on the Stage 1 and stage 2 versions? Not planning on tracking. It's a E93 and I'm not adding a roll bar!! Stage 1 cheaper and would use the savings to replace the cp.

Thanks, ML

Stage 1 will be detectable by the dealership while Stage 2 is not, spend the extra cash

Ml3456 · 07-31-2013, 08:28 AM

Didn't know that. Thanks

06-21-2013, 10:29 AM	#1
Andrewe92 enthusiast 123 Rep 997 Posts Drives: 2011 e92 lci 335xi Join Date: Feb 2012 Location: NJ iTrader: (0) Garage List 2011 bmw 335 xdrive [10.00]	jb4 no boost under certain rpm? I'm still reading into the n55 as much as I can.. quick question tho. from my understanding when the n55 is untouched it doesnt give boost unless you go over a certain rpm? 2500 i think? but does this change with the jb4 and also if i do throw in a jb4 is it 100% necessary to get a charge pipe? I obv dont want the stock one to break but i also dont wanna spend to much just want a little more power thats all.. thanks in advance
	Appreciate 0 Tweet Quote

06-21-2013, 11:00 AM	#2
mashimarho BimmerPost Supporting Vendor 2175 Rep 13,877 Posts Drives: E92 M3 & F80 M3 & G82 M4 Join Date: Mar 2010 Location: Lynnwood, WA iTrader: (45) Garage List 2021 BMW G82 M4 [0.00] 2011 BMW E92 M3 [0.00] 2015 BMW F80 M3 [0.00] 2012 BMW 335i xDrive [9.78]	Boost does not really "kick in" until about 2400? I think.. The JB4 will not change that, rather it will give MORE boost. The CP is not required. It will just help the longevity of the CP itself, because more boost = bye bye Stock plastic CP __________________ Mashimarho.com /// Instagram /// Facebook /// Youtube /// sales@mashimarho.com /// (425) 582-7939
	Appreciate 0 Quote

06-21-2013, 11:29 AM	#3
eyim1988 Lieutenant Colonel 103 Rep 1,647 Posts Drives: 2022 BMW M4 Join Date: Feb 2011 Location: Los Angeles, CA iTrader: (5) Garage List 2022 M4 [0.00]	first mod should be chargepipe __________________ Current: 2021 X3MC Past: 2013 bmw 335i, 2011 bmw 335i coupe, 2016 bmw m3
	Appreciate 0 Quote

06-30-2013, 11:42 PM	#6
TrentOSU Lieutenant 23 Rep 592 Posts Drives: 11' AW e90 335i M-Sport Join Date: Aug 2012 Location: Corvallis, Oregon iTrader: (1)	Does a charge pipe void the warranty?
	Appreciate 0 Quote

07-01-2013, 08:24 AM	#8
avol3xo Captain 64 Rep 733 Posts Drives: 2008 E92 M3 Join Date: Jul 2012 Location: Atlanta, GA iTrader: (1) Garage List 2008 BMW [0.00]	Never had trouble with my stock cp under map 1 settings, but when you say a "little" power? You understand that dollar for dollar the JB4 is an amazing amount of power gained. __________________ 2011 BMW 335i E92 Vermillion Red, 6MT [SOLD] 2008 BMW M3 E92 Alpine White, 6MT
	Appreciate 0 Quote

07-01-2013, 02:57 PM	#12
SflBimmer8484 Brigadier General 1475 Rep 3,159 Posts Drives: . Join Date: Dec 2011 Location: Florida iTrader: (5)	Charge pipe should be the first mod!
	Appreciate 0 Quote

07-30-2013, 09:43 AM	#13
Ml3456 Second Lieutenant 23 Rep 264 Posts Drives: 2018 X1 & 335i E93 Join Date: Dec 2012 Location: Chicago West Burbs iTrader: (0)	Is Map 1 the same on the Stage 1 and stage 2 versions? Not planning on tracking. It's a E93 and I'm not adding a roll bar!! Stage 1 cheaper and would use the savings to replace the cp. Thanks, ML
	Appreciate 0 Quote

07-31-2013, 08:28 AM	#15
Ml3456 Second Lieutenant 23 Rep 264 Posts Drives: 2018 X1 & 335i E93 Join Date: Dec 2012 Location: Chicago West Burbs iTrader: (0)	Didn't know that. Thanks
	Appreciate 0 Quote