Boost - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-17-2007, 02:18 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2006
Location: TORONTO
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
sallan is on a distinguished road
Default Boost

Can someone, tell me where the needle should sit at idle on the boost?? A picture would be great
sallan is offline   Reply With Quote
Old 03-17-2007, 02:21 PM   #2
Junior Member
 
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
harofreak00 is on a distinguished road
Default

what is your year and trim model?

it should be -10 (vacuum) at idle... and if you rev it in park the most it is going to get to is 0.. because the boost is bypassing

while driving at WOT (wide open throttle), you should be able to get to 6-9psi if you are stock
harofreak00 is offline   Reply With Quote
Old 03-17-2007, 05:04 PM   #3
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Some sit a few psi above -10 at idle. If you are coasting and it goes down to -10, it should be fine.
J Wikoff is offline   Reply With Quote
Old 03-18-2007, 07:26 PM   #4
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2006
Location: TORONTO
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
sallan is on a distinguished road
Default

1993 SSEI Mine sits at -50 at idle!!!! This sounds bad, lol!!!! What could be the cause
sallan is offline   Reply With Quote
Old 03-18-2007, 07:29 PM   #5
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

Quote:
Originally Posted by sallan
1993 SSEI Mine sits at -50 at idle!!!! This sounds bad, lol!!!! What could be the cause
You have a metric gauge that reads kPa instead? *shrugs*


**EDIT** Went and checked my boost gauge, which is metric from Canada. Sounds like yours is also from Canada, with a metric gauge that reads in kPa instead of psi.

The bottom of the negative side should read -70, in whch case -50 is perfectly normal. Mine hovers around that at idle as well.
TrueWildMan is offline   Reply With Quote
Old 03-18-2007, 07:31 PM   #6
Junior Member
 
Join Date: Apr 2006
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Bonneville92V688 is on a distinguished road
Default

Yeah he must be in Canada with the kPa gauge.
Bonneville92V688 is offline   Reply With Quote
Old 03-18-2007, 07:32 PM   #7
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

Quote:
Originally Posted by Bonneville94V688
Yeah he must be in Canada with the kPa gauge.
It is. I edited my message.
TrueWildMan is offline   Reply With Quote
Old 03-18-2007, 11:07 PM   #8
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2006
Location: TORONTO
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
sallan is on a distinguished road
Default

I am in canada, thanks guys, I thought I had a real problem, now to my second question! Is it okay if there is movement in the needle when you are at idle??????
sallan is offline   Reply With Quote
Old 03-18-2007, 11:22 PM   #9
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

Quote:
Originally Posted by sallan
I am in canada, thanks guys, I thought I had a real problem, now to my second question! Is it okay if there is movement in the needle when you are at idle??????
Say + or - 10 kPa? That should be okay. Any more than that, and there could be an issue. If it is more than that, is the engine idle RPM also fluctuating?
TrueWildMan is offline   Reply With Quote
Old 03-18-2007, 11:52 PM   #10
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Sep 2006
Location: TORONTO
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
sallan is on a distinguished road
Default

No its not
sallan is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Low boost, no boost problem immusicman Forced Induction 12 09-27-2009 01:05 AM
Boost Control Solenoid Maintenance and Boost Control Actuator Test for low Boost* Toddster Trouble shooting + Test Procedures 0 03-21-2009 07:24 PM
More boost via boost controller... DanCulkin Performance, Brainstorming & Tuning 14 07-02-2007 12:02 PM
low stock Boost vs high stock boost hvactech Performance, Brainstorming & Tuning 12 05-10-2005 11:14 PM
Boost? mjmnam Performance, Brainstorming & Tuning 2 12-31-1969 08:00 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:38 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.