Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Transam Need HELP ASAP

Thread Tools
 
Search this Thread
 
Old Oct 19, 2011 | 07:00 PM
  #1  
TransAm Bandit's Avatar
Thread Starter
Staging Lane
 
Joined: Jan 2009
Posts: 84
Likes: 0
From: Dubai
Angry Transam Need HELP ASAP

last month i installed TrF500 HP H&C kit on my car and i the car was making 400WHP on dyno .
and the car runs Fine and Fast.
2 weeks ago my car start acting Mad.first the car became very slow when i checked the car it was too Lean so i changed the O2 Sensors and after that the car runs too rich .tonight we made another DYNo run and car made only 320WHP which is 80WHP less than what it was.
Tuner checked the tune and everything was fine NO SES NO VACOUME LEAK SPARK PLUGS WIRES ARE FINE NO MISSFIRE .
So what can make this happend?
the car drives fine but only power is not there
lost of 80WHP on car?
Reply
Old Oct 19, 2011 | 07:37 PM
  #2  
Paul Bell's Avatar
That's MISTER MODERATOR
20 Year Member
Photogenic
Liked
Loved
iTrader: (9)
 
Joined: Nov 2005
Posts: 7,615
Likes: 63
From: NYC
Default

Don't start changing parts until you know what's wrong. You need to have the PCM scanned for codes. Not all codes will illuminate the SES light.
Reply
Old Oct 19, 2011 | 07:40 PM
  #3  
O2Form's Avatar
Banned
 
Joined: Oct 2009
Posts: 992
Likes: 1
Default

!st thing is do compression and leak down and fuel pressure tests.
Reply




All times are GMT -5. The time now is 09:10 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