Forced Induction Superchargers | Turbochargers | Intercoolers

need some boost controller help

Thread Tools
 
Search this Thread
 
Old Mar 22, 2006 | 07:56 PM
  #1  
NYSS Guy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (1)
 
Joined: Sep 2004
Posts: 645
Likes: 0
From: West Palm Beach, FL
Default need some boost controller help

I am having a weird problem, and I think it's because of the Greddy Profec B-II boost controller. The other day I rolled into it in 2nd, hit my setting (9psi), shifted to 3rd, no boost! Then half way through the gear, it shot back up to 9 psi. I have driven this car for quite a while, so it wasn't lag or anything like that.

Now, I get NO boost at all. It barely sounds like the turbo is spinning. I called Greddy, they said I could ship it to them, but wouldn't get it back for 1-2 weeks, not counting shipping. And I have plans to a bunch of people to hit the track on April 7th. By the way, I pulled the intake pipe off, and the wheel is spinning freely.

Anybody have any ideas as to what would be wrong? And is there anything I can do besides replacing parts?
Reply
Old Mar 22, 2006 | 08:03 PM
  #2  
StoleIt's Avatar
NKAWTG...N
iTrader: (3)
 
Joined: Nov 2003
Posts: 4,759
Likes: 0
From: Wichita, KS
Default

Just a simple check, maybe disconnect it entirely and try running just off the WG (make sure the spring wont put you in too much boost). See if you still get boost in all the gears.

Also check all your lines, pipes, and coupling.
Reply
Old Mar 22, 2006 | 08:40 PM
  #3  
LTLHOMER's Avatar
8 Second Club
iTrader: (10)
 
Joined: Jan 2004
Posts: 1,522
Likes: 0
From: Metro Detroit
Default

Originally Posted by StoleIt
Just a simple check, maybe disconnect it entirely and try running just off the WG (make sure the spring wont put you in too much boost). See if you still get boost in all the gears.

Also check all your lines, pipes, and coupling.
You can't run less than the WG spring (physically impossible), so disconnecting his boost controller and only running a line from the compressor outlet to the gate will be the least amount of boost he can possibly run. And yes that sounds like a good point to start at although I don't think it's your boost controller.
Reply
Old Mar 22, 2006 | 10:27 PM
  #4  
NYSS Guy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (1)
 
Joined: Sep 2004
Posts: 645
Likes: 0
From: West Palm Beach, FL
Default

What else could it be?? If it was a loose coupling or something like that, I would think that the boost would've been gone...not on and off. But, if you have ideas, that's what I'm looking for. I would love for it to be something really easy!
Reply
Old Mar 22, 2006 | 11:22 PM
  #5  
ESR's Avatar
ESR
LS1TECH Sponsor
iTrader: (7)
 
Joined: Jan 2002
Posts: 628
Likes: 0
From: Houston, TX
Default

this sounds way to familiar to the sts issues I m having on the car I emailed you about. Which Im attempting to retune tommorrow.

Originally Posted by NYSS Guy
What else could it be?? If it was a loose coupling or something like that, I would think that the boost would've been gone...not on and off. But, if you have ideas, that's what I'm looking for. I would love for it to be something really easy!
Reply
Old Mar 22, 2006 | 11:51 PM
  #6  
bboyferal's Avatar
TECH Junkie
iTrader: (9)
 
Joined: Apr 2005
Posts: 3,472
Likes: 0
From: Miami, FL
Default

I started to lose boost once 'cause one coupler that connects the intercooler to the intake pipe was swelling a bit and had moved. Of course, I noticed this after days of doing this...

Tightened it up and boost was back.

Edit: Hey, you frequent SFR?
Reply
Old Mar 23, 2006 | 12:36 AM
  #7  
NYSS Guy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (1)
 
Joined: Sep 2004
Posts: 645
Likes: 0
From: West Palm Beach, FL
Default

I do hit that site pretty frequently...actually I posted in a thread you are a part of. I usually read more than I post.

Hey ESR, I seriously doubt this would be anything in the tune. I didn't touch my tune before this started happening. It's gotta be some kind of part that just isn't holding up somehow. I guess I'll go through and re-check everything again.

LTLHOMER, can you tell me what you're thoughts are...I'm curious.
Reply




All times are GMT -5. The time now is 08:17 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE