![]() |
![]() |
![]() |
![]() |
![]() ![]() |
![]() |
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
![]() |
![]() ![]() |
BMW 3-Series (E90 E92) Forum
>
Boost Promlem..
![]() |
![]() |
09-11-2009, 04:22 AM | #1 |
Banned
![]() 211
Rep 3,588
Posts |
Boost Promlem..
ok so i installed a boost gauge a few weeks ago and been testing things out i use to be able to hit 17-19 psi on a fresh night on map 6 and recently its colder and can't get over 15! whats going on!!!
|
09-11-2009, 05:43 AM | #2 | |
Banned
![]() 60
Rep 1,054
Posts |
Quote:
![]() Thats really nothing I would recommend if reliability is important for you. |
|
Appreciate
0
|
09-11-2009, 05:51 AM | #3 |
Banned
![]() 211
Rep 3,588
Posts |
|
Appreciate
0
|
09-11-2009, 05:58 AM | #4 |
only in it for the torque - awuleth'umshini wami
![]() 51
Rep 425
Posts
Drives: sapphire black 335i
Join Date: Apr 2009
Location: nomad
|
Check with Terry at BMS...send him a log from your BT tool if you have...
__________________
![]() |
Appreciate
0
|
09-11-2009, 07:43 AM | #5 |
Major General
![]() ![]() ![]() 165
Rep 7,377
Posts |
Peak is useless, pull 4th and note how much you are boosting at 5, 5,5-6 K rpm.
You should be seeing around 15,5 sustained . Weather also matters.
__________________
07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
![]() |
Appreciate
0
|
09-11-2009, 07:52 AM | #6 |
Major General
![]() ![]() 330
Rep 5,175
Posts |
Peak is ok, but it depends on where you are measuring it. Is this on a Rix gauge or off the TMAP?
|
Appreciate
0
|
09-11-2009, 08:21 AM | #7 |
General
![]() ![]() ![]() ![]() ![]() 290
Rep 28,154
Posts |
do you still have your dv releasing to the atmosphere or did you hook them back up properly? if you wanna hit 18 talk to terry about an unlocked board for the jb3
|
Appreciate
0
|
09-11-2009, 09:59 AM | #8 |
![]() 209
Rep 9,339
Posts |
i bet ur FMIC has a leak in one of the hoses... u called me and said u were gonna pass by cause u thought one hose wasn't on right... Seems like a slight boost leak.
|
Appreciate
0
|
09-11-2009, 12:26 PM | #10 | |
Joint Chiefs of Staff
![]() ![]() 5100
Rep 116,225
Posts |
Quote:
Mike |
|
Appreciate
0
|
09-11-2009, 02:41 PM | #11 | ||||||
Banned
![]() 211
Rep 3,588
Posts |
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
noo like she stays stedy right at 15psi... im telling u mike i use two stay stedy atleast above 15psi i dunno i need to check with alex@sp two see if this fmic is hooked up right. |
||||||
Appreciate
0
|
09-11-2009, 03:52 PM | #12 |
Major General
![]() ![]() ![]() 192
Rep 6,631
Posts |
I was running on 12psi of boost for months on JB3 1.3 Map 7... eventually it crapped out and triggered CELs each time the car was restarted. It turns out the Solenoid and vacuum lines were bad according to the dealer. Now I'm boosting in the 16's after getting her back. I think it's a leak somewhere too, especially if you were seeing 18-19, and now you're in the 15's on the same gauge.
__________________
E90 LCI N54 6AT
|
Appreciate
0
|
09-11-2009, 04:49 PM | #13 | |
Banned
![]() 211
Rep 3,588
Posts |
Quote:
+1 im gonna reinstall the gauge/dv's and check the fmic for leaks with the hose's |
|
Appreciate
0
|
09-11-2009, 05:54 PM | #14 |
Brigadier General
![]() ![]() 117
Rep 3,334
Posts |
You will boost lower on a cooler night, but like others have said peak boost is useless look at your sustained boost and where your rpms are at.
__________________
![]() ![]() |
Appreciate
0
|
09-12-2009, 04:44 AM | #15 | |
Lieutenant Colonel
![]() 90
Rep 1,575
Posts |
Quote:
Its certainly the DVs !!You have used the wrong springs. I know from my own exerience.
__________________
![]() Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE |
|
Appreciate
0
|
09-12-2009, 02:38 PM | #16 |
Banned
![]() 211
Rep 3,588
Posts |
|
Appreciate
0
|
09-12-2009, 02:56 PM | #17 |
![]() 209
Rep 9,339
Posts |
|
Appreciate
0
|
09-12-2009, 03:12 PM | #18 |
Banned
![]() 211
Rep 3,588
Posts |
|
Appreciate
0
|
09-12-2009, 09:34 PM | #20 |
Professional Moose Racer
![]() 332
Rep 7,509
Posts |
I think you need the yellow springs
__________________
Visit my blog anytime: http://www.sfpayments.com
![]() BMW Dream Team PNW Chapter, member #1 ![]() |HP Autowerks | AR DESIGN | BMW PERFORMANCE | STOP TECH | Volk Racing| AMS | ARKYM |
Appreciate
0
|
09-12-2009, 11:24 PM | #21 |
![]() 485
Rep 18,331
Posts |
I see some oil residue on the bottom of the Forge DV where it connect to the grey connector...Its not alot of oil, but with all the dirt thats cake onto it, I see it more..Does anyone who have the Forge DV for extensive period have this also, or is yours clean without trace of oil to be found anywhere near the DVs?
|
Appreciate
0
|
09-13-2009, 07:17 AM | #22 | |
Banned
![]() 211
Rep 3,588
Posts |
Quote:
|
|
Appreciate
0
|
![]() |
Bookmarks |
Thread Tools | Search this Thread |
|
|