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Old 11-06-2006, 11:54 AM   #1
Drink
Scooby Newbie
 
Member#: 102682
Join Date: Dec 2005
Location: Woodberry, IN
Vehicle:
... ripper's
sister.

Default Boost control problem with GM solenoid

Please help a utec noob

Pertinant mods...

Wrx heads
257 block
td04
Full exhuast
Intake
Inlet hose
FMIC
Walbro
GM solenoid


I'm having problems controlling boost with my GM solenoid. 1st and 2nd gear are spot on. 3rd gear + is where I hit target boost, then shoot right past it and spike at 20psi.

I can't seem to get it to limit boost under load though.

(No logs to provide yet) 170 @ 100% load nets me 20psi. It was drastically reduced to 170 for the 70% load columns+, but it won't control boost at ALL. The abc is also closed all the way. Don't know where to go from here.
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Old 11-06-2006, 11:57 AM   #2
NITROS
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Member#: 41561
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
04 GT3076 2.1
Stroker = Broken 3rd

Default

you have teh AIDS. Reply FTW


His boost goes up and down. Hits 10, jumps to 20, back to 10 pSI. It's very wierd. Ill post his logs tonight.
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Old 11-06-2006, 01:49 PM   #3
TwoFive
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Chapter/Region: RMIC
Location: Evergreen, CO
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Black

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What is your gain set at?
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Old 11-06-2006, 04:40 PM   #4
NITROS
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Member#: 41561
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
04 GT3076 2.1
Stroker = Broken 3rd

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Quote:
Originally Posted by TwoFive View Post
What is your gain set at?
Gain should be set at 48. He is using my map as a base, with my parameters.
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Old 11-06-2006, 10:15 PM   #5
Strng1dah
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Join Date: May 2001
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2002 WRX
13.1@104

Default

1 - Double check all wiring/vac hoses. I know it is simple to install the GM BCS, but it can't hurt to double check.
2 - Try reducing the gain down to the 20 range. I've had much better sucess with it down there.
3 - Reduce your boost values when you reduce the gain. Mine are in the 160 range, so I wouldn't expect you to have to move them too much.
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