Caminated hits the track... 13's! - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 07-25-2004, 06:20 PM   #11
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jun 2004
Posts: 287
Thanks: 0
Thanked 0 Times in 0 Posts
caminated2k is on a distinguished road
Default

It'* probably dumping the boost through the bypass valve. As to why, I have no idea... but I didn't watch it.. I'll have to do that next time I hit 102 :P



**** Amendment to first post, this was on 93 octane.
caminated2k is offline   Reply With Quote
Old 07-25-2004, 06:27 PM   #12
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

I'm sure that'* what it is. Boost dump caused when the computer signals the boost bypass solenoid to kill the power. Possibly tied to engine air temp and knock controls.
I would strongly recommend bypassing your solenoid when not in protective mode.
2000SilverBullet is offline   Reply With Quote
Old 07-25-2004, 06:32 PM   #13
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jun 2004
Posts: 287
Thanks: 0
Thanked 0 Times in 0 Posts
caminated2k is on a distinguished road
Default

Do you know how to directly bypass it without disabling it?

If you disable it by pulling the plug, it won't close properly and you can't build boost.
caminated2k is offline   Reply With Quote
Old 07-25-2004, 06:35 PM   #14
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

Check out the Forced Induction Area here for info on the bypass. May be in tech-info at the top as well.
BonneMeMN is offline   Reply With Quote
Old 07-25-2004, 06:49 PM   #15
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Quote:
Do you know how to directly bypass it without disabling it?

If you disable it by pulling the plug, it won't close properly and you can't build boost.
No.
It will simply not allow the solenoid to activate.
Under negative pressure, or vacuum, the bypass is open. It has a separate supply directly from the intake manifold, before the supercharger, to the top of the bypass actuator cylinder.
Under positive pressure, or boost, the bypass closes. It will only open if the other side of the can sees a higher pressure.
The boost control solenoid is connected to the opposite side of the bypass actuator cylinder. It is supplied from a vacuum (pressure) line that takes its source from after the supercharger.

So, by simply looping the bypass solenoid outlets, you can trick it into a normally functioning bypass but without the computer contolled over ride ability.
2000SilverBullet is offline   Reply With Quote
Old 07-25-2004, 07:01 PM   #16
Senior Member
Certified GM nut
 
Join Date: Jul 2003
Location: Chicagoland
Posts: 1,712
Thanks: 0
Thanked 0 Times in 0 Posts
TaylorD is on a distinguished road
Default

Good times, glad you made the 13 club. Some day I'll be there, anyways I didn't notice this yesterday, I did have one run over 100mph but didn't notice slowing down at the end. Wasn't watching my speed real closely though, so it could of happened but I don't think so for me. Curious to hear more about it and Scotts reply. I'll try to watch for it this week.
TaylorD is offline   Reply With Quote
Old 07-25-2004, 07:02 PM   #17
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jun 2004
Posts: 287
Thanks: 0
Thanked 0 Times in 0 Posts
caminated2k is on a distinguished road
Default

I'll give that a shot in about an hour

Thanks for the tip.
caminated2k is offline   Reply With Quote
Old 07-25-2004, 08:09 PM   #18
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Jun 2004
Posts: 287
Thanks: 0
Thanked 0 Times in 0 Posts
caminated2k is on a distinguished road
Default

OK, I guess I need a different explanation or a picture of where to move each line.

For contrast, I did it wrong and it was not working right so I only saw 4lbs of boost, but it still stumbled at 102/3 and didn't shift into third.
caminated2k is offline   Reply With Quote
Old 07-25-2004, 08:15 PM   #19
Senior Member
Posts like a Corvette
 
Join Date: Jan 2004
Location: Montréal, QC
Posts: 1,374
Thanks: 0
Thanked 0 Times in 0 Posts
Foghorn is on a distinguished road
Default

I have a 97 with an Intense PCM and have not experienced this problem.

Cheers,
Foghorn is offline   Reply With Quote
Old 07-25-2004, 09:05 PM   #20
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Thanks: 0
Thanked 0 Times in 0 Posts
Rogue is on a distinguished road
Default

1st Congratz on the 13'*! Impressive with the minimal mods.

Second, I hit this wall once at the track and once on the way home. At 102 it just stopped climbing, didnt drop, didnt advance, stuck at 102 until I let off the accelerator and then it shifted into 3rd. Valve float was my first thought but with all the valve train mods im not sure this possible unless its a stock lifter problem at those rpms....
Rogue is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Turbo GP GXP hits the track sonoma_zr2 Lounge 6 11-14-2007 11:19 PM
Caminated....this is for you 1993 SLE Your Other Rides: Pics & Videos 5 11-20-2005 08:58 PM
Caminated is keepin the car, Going for more with less... caminated2k Performance, Brainstorming & Tuning 6 08-19-2005 05:24 PM
Bad SSEi Hits Elevens! BadSSEi Performance, Brainstorming & Tuning 8 11-27-2002 02:01 AM


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 09:49 AM.


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.