383 L98 with idle problems
Thread Starter
Advanced
Joined: Oct 2002
Posts: 57
Likes: 0
From: Wichita Falls TX
383 L98 with idle problems
Friend has a supercharged 383 L98. He is experiencing very rough idle. The idle is quite eratic and often the car will die.
He had someone tell him to try running the car with the MAF sensor unplugged. He did this and it corrected his problem. Obviously he cannot run the car like this and would like help in figuring out his problem. He has tried replacing his MAF. Did not help. He has an MSD ignition box & coil. He has tried bypassing those and it also did not help.
Any ideas?
Thanks,
Scott
He had someone tell him to try running the car with the MAF sensor unplugged. He did this and it corrected his problem. Obviously he cannot run the car like this and would like help in figuring out his problem. He has tried replacing his MAF. Did not help. He has an MSD ignition box & coil. He has tried bypassing those and it also did not help.
Any ideas?
Thanks,
Scott
Burning Brakes
Joined: Apr 2002
Posts: 1,126
Likes: 0
From: Cleveland OH
Originally Posted by ncccracer1986
He has a piggy-back chip on it. He removed it and the problem stayed the same.
Ron
Racer
Joined: Jul 2001
Posts: 359
Likes: 0
From: Russellville TN
St. Jude Donor '06
I'm running a 383 SC package in my 86 so if you email me with the specs I'll send you a chip to get him started. Ed Wright cost me $400.00 bucks for a chip several years ago. Much to my surprise I still had idle problems among other things. I found his chip programming only increased my injector size and my coolant temps....man was I hot! Several years later and a lot of dyno work I've broke the code on SC 98's.
I'll need to know what year the vehicle is too and what what he's installed to compensate for boost timing/AFR.
Cheers,
Frank
I'll need to know what year the vehicle is too and what what he's installed to compensate for boost timing/AFR.
Cheers,
Frank
Thread Starter
Advanced
Joined: Oct 2002
Posts: 57
Likes: 0
From: Wichita Falls TX
Originally Posted by Corvette86
I'll need to know what year the vehicle is too and what what he's installed to compensate for boost timing/AFR.
Team Owner
Joined: Jul 2004
Posts: 28,462
Likes: 3,288
From: Hartford WI
LPE has recommended www.fasterproms.com as their chip burner. It is about $350 for the first burn and $150 for future upgrades. Each burn consists of burning it till you are satisfied. They send you a "rough burn" which is close. They can loan you their cable and software and you take feedback (road is your dyno) and you email it to them. They send you another chip which is closer and another till it is nuts on. I have no stake in their company but I have used their stuff successfully and I am happy with my money spent there. They are a custom burner that does not have to have your car on their dyno since you are on the road when you do WOT runs, idle, cruisng, etc
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski