Forced Induction Superchargers | Turbochargers | Intercoolers

Twin turbo LS1

Thread Tools
 
Search this Thread
 
Old Sep 19, 2016 | 09:46 AM
  #1  
GCARRACER's Avatar
Thread Starter
Teching In
 
Joined: Mar 2015
Posts: 3
Likes: 0
Default Twin turbo LS1

First time turbo issues. Twin turbo LS1 Engine runs fine with Turbos disconnected but surges horribly and dies when hooked up.
Reply
Old Sep 19, 2016 | 01:00 PM
  #2  
stevieturbo's Avatar
9 Second Club
 
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Default

You do realise it needs built...AND tuned before it will run correctly and safely ?
Reply
Old Sep 19, 2016 | 02:21 PM
  #3  
GCARRACER's Avatar
Thread Starter
Teching In
 
Joined: Mar 2015
Posts: 3
Likes: 0
Default Yes Sir

The ECM was programmed by Spare ECM and they advised us that for maximum horse power to have it put on the dyno and have it tweaked.
Reply
Old Sep 19, 2016 | 03:19 PM
  #4  
01SSRMS's Avatar
12 Second Club
iTrader: (7)
 
Joined: Nov 2004
Posts: 271
Likes: 0
From: Nashville, TN
Default

Any chance in the changeover you are opening up a vacuum leak? Assume you are just starting it and trying to idle. That was my first thought. Also, how are your O2 sensors configured?
Reply
Old Sep 19, 2016 | 03:49 PM
  #5  
stevieturbo's Avatar
9 Second Club
 
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Default

Originally Posted by GCARRACER
The ECM was programmed by Spare ECM and they advised us that for maximum horse power to have it put on the dyno and have it tweaked.
You never mentioned about having any issues about power ?

You described a problem at idle, low loads....you do not need a dyno for that.

Has the car ever been tuned correctly to suit the modifications ?
Reply
Old Sep 19, 2016 | 03:56 PM
  #6  
6669camaro's Avatar
Launching!
iTrader: (1)
 
Joined: Feb 2015
Posts: 205
Likes: 0
From: Omaha, Ne
Default

If you have some flex pipe in there between the manifolds and the turbos make sure it's not collapsed.
Reply
Old Sep 20, 2016 | 12:38 PM
  #7  
cajundragger's Avatar
TECH Apprentice
iTrader: (2)
 
Joined: Jan 2007
Posts: 345
Likes: 0
Default

are the BOVs open at idle? are the turbos very large and don't have anti-surge compressor housings?

you're really not giving us much to go on to help out...
Reply




All times are GMT -5. The time now is 06:58 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