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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 > Charge pipe mistake



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      06-13-2012, 11:43 AM   #1
Goldenchild
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Charge pipe mistake

So apparently I couldn't figure out why I wasn't getting as much boost as I should with the mods I have already. Barely hit 10lbs. Rechecked everything and finally noticed that when I put my new charge pipe on, I never or even noticed that the stock o ring to the throttle was still on the stock pipe. Well needless to say the car now runs crazy!! Crazy fast that is. Hitting 15 n over on map 2 now. Wondering if anyone else had that problem or forgot also...
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      06-13-2012, 01:53 PM   #2
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How did u measure the boost?
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      06-13-2012, 02:08 PM   #3
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Hmmm this could be the problem in having.
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      06-13-2012, 02:28 PM   #4
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Quote:
Originally Posted by Everfly
How did u measure the boost?
Measure of the jb4 n barely peeked 9-10. When I should be getting over 15. Did a bunch of runs and data logs to send to terry and figured it was either a boost or vacuum leak. Rechecked everything and as simple as that. Never thought to take the big o ring out on the stock cp. took over 2 weeks to narrow it down. Cus intake blew off the connections and when I put the dp in. The o2 wirings fell off the clips and started to burn. But luckily it wasn't no damage to the wires. Think everyone should should check there cp connections to the throttle body.
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      06-13-2012, 02:31 PM   #5
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Quote:
Originally Posted by pjdizzle94
Hmmm this could be the problem in having.
What problem are u having??
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      06-13-2012, 03:49 PM   #6
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Haha I didn't log it yet but my P3 gauge only give me 10.5 psi which is not corrected, still need to tap the wire but being lazy, also I have ETS CP so no need oring. Just feel like I don't make enough power as it should with my butt dyno. Guess need to log to figure out the boost since I am running map 2 now but I can't break loose the tires ;(
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      06-13-2012, 04:10 PM   #7
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Have one better for you. Having a shop forget to transfer your O rings from your stock headlights to your OSS set. What a fukin nightmare that was...
You know who you are!
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      06-13-2012, 04:30 PM   #8
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Quote:
Originally Posted by Dark_Knight_335 View Post
Have one better for you. Having a shop forget to transfer your O rings from your stock headlights to your OSS set. What a fukin nightmare that was...
You know who you are!
Haha that's why I do all the works myself
It's way more fun to do mods yourself anyhow
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      06-13-2012, 05:18 PM   #9
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Quote:
Originally Posted by Everfly
Quote:
Originally Posted by Dark_Knight_335 View Post
Have one better for you. Having a shop forget to transfer your O rings from your stock headlights to your OSS set. What a fukin nightmare that was...
You know who you are!
Haha that's why I do all the works myself
It's way more fun to do mods yourself anyhow
I hear that bro- if I didn't have two left hands I would
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      06-13-2012, 07:00 PM   #10
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This is good to know, I'm planning to install my charge pipe this week
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      06-13-2012, 08:17 PM   #11
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Quote:
Originally Posted by Everfly View Post
Haha I didn't log it yet but my P3 gauge only give me 10.5 psi which is not corrected, still need to tap the wire but being lazy, also I have ETS CP so no need oring. Just feel like I don't make enough power as it should with my butt dyno. Guess need to log to figure out the boost since I am running map 2 now but I can't break loose the tires ;(
P3 gauges will only show you your dme boost. The jb4 actual boost will be much higher.

p3 gauge works great on flash tunes though and will read actual boost readings.
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      06-13-2012, 10:08 PM   #12
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bump
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      06-13-2012, 11:44 PM   #13
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Quote:
Originally Posted by Goldenchild View Post
What problem are u having??
I can feeling a boost leak in my car. either from fmic or my chargepipe. no way im pulling only 312 with all my mods hahaha
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      06-14-2012, 09:42 AM   #14
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Going to get dyno today. Hope the number shows good n my problem is fixed. Will post up pictures after then.
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      06-14-2012, 11:10 AM   #15
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Quote:
Originally Posted by Andrew@ActiveAutowerke View Post
P3 gauges will only show you your dme boost. The jb4 actual boost will be much higher.

p3 gauge works great on flash tunes though and will read actual boost readings.
Only down side is dealer will see my actual boost as well haha
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      06-14-2012, 11:15 AM   #16
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Quote:
Originally Posted by Everfly View Post
Only down side is dealer will see my actual boost as well haha
Unplug the gauge before going in they will most likely need the obd2 port if doing any type of service work anyway.
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      06-14-2012, 11:17 AM   #17
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Quote:
Originally Posted by Andrew@ActiveAutowerke View Post
Unplug the gauge before going in they will most likely need the obd2 port if doing any type of service work.
Haha that also work
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      06-14-2012, 11:18 AM   #18
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Fyi Meth and 40% e85 is
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      06-14-2012, 12:19 PM   #19
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Quote:
Originally Posted by Andrew@ActiveAutowerke
Fyi Meth and 40% e85 is
Not fimilar with that but I still have 93oct and trying to burn it all so I can fill up on 100
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      06-14-2012, 01:05 PM   #20
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Quote:
Originally Posted by Andrew@ActiveAutowerke View Post
P3 gauges will only show you your dme boost. The jb4 actual boost will be much higher.

p3 gauge works great on flash tunes though and will read actual boost readings.
There is a not-so-new feature on the P3 that I use. It taps the MAP sensor (before the piggyback) so it reads real manifold pressure.

From the install document (http://www.p3cars.com/install/bmw/):

Quote:
elect engine type this will enhance the accuracy of the gauge. A.n55 is for n55 with voltage tap on the OEM sensor connected to analog 2
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      06-14-2012, 02:18 PM   #21
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Our new AA n55 charge pipe comes with two bungs so I have a real boost line connected.
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      04-02-2013, 07:14 PM   #22
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Quote:
Originally Posted by Andrew@ActiveAutowerke View Post
Our new AA n55 charge pipe comes with two bungs so I have a real boost line connected.
Just read this. I have a charge pipe with a bung too but no injector in there. I want to use it to read the boost pressure. How is that working out for you?
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