PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Dumb as a hammer, fast as a snail

Thread Tools
 
Search this Thread
 
Old Oct 25, 2011 | 10:38 AM
  #1  
dirtyb9735's Avatar
Thread Starter
Teching In
 
Joined: Mar 2011
Posts: 2
Likes: 0
Unhappy Dumb as a hammer, fast as a snail

Hey guys I know you have had a gazillion people as this question but I am a retard and need it explained S-L-O-W-L-Y!! I just did a swap of a 02 Avalanche 5.3 into my 86 Silverado. A buddy of mine has HPTuners and he reflashed my ecm and removed VATS, emissions and down-stream O2s, we removed torque-management too. The problem that I am having is when we did it the truck ran great, I had the exhaust welded up and it was ok, when I got it home I romped on it really, really hard (I did a burn out half way up the block) after I did this it started running really crappy. The only codes that are triggered are P0300 random misfire, and it seems to only run bad in closed loop. Is it the tune? I have been fighting with it for a week and need some HELP!!!

THANKS GUYS!!!!
Reply
Old Oct 25, 2011 | 02:21 PM
  #2  
brianfromhawaii's Avatar
11 Second Club
iTrader: (3)
 
Joined: Oct 2007
Posts: 857
Likes: 0
From: Hawaii
Default

are you sure the car is in open loop mode?
Reply
Old Oct 26, 2011 | 05:51 PM
  #3  
dirtyb9735's Avatar
Thread Starter
Teching In
 
Joined: Mar 2011
Posts: 2
Likes: 0
Default

Yes sir, at least that's what the code reader is saying.
Reply




All times are GMT -5. The time now is 08:11 AM.

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