unless there is an obvious mechanical issue, the tune is the place to start...
Hello All
Thread Starter
8th Gear
Joined: Aug 2019
Posts: 8
Likes: 0
From: Sacramento
Hello All
Hey guys,
I've got an 04 c5,lowered,wide body kit,no other upgraded suspension parts that I know of.
The motor has a Texas Speed cam,with,I believe 243 heads,long tube headers going straight back.
The guy I bought the car from has been very tight lipped about motor.
Car currently stutters at idle,will run,but surges and acts like it wants to shut down.
Is it as simple as getting a custom tune,or?
I'm clueless about this.
ANY help is appreciated, how much this would cost,where do I go,what do I look for in a tuner,etc.etc.
I've got an 04 c5,lowered,wide body kit,no other upgraded suspension parts that I know of.
The motor has a Texas Speed cam,with,I believe 243 heads,long tube headers going straight back.
The guy I bought the car from has been very tight lipped about motor.
Car currently stutters at idle,will run,but surges and acts like it wants to shut down.
Is it as simple as getting a custom tune,or?
I'm clueless about this.
ANY help is appreciated, how much this would cost,where do I go,what do I look for in a tuner,etc.etc.
Le Mans Master
Joined: Jun 2007
Posts: 7,430
Likes: 4,829
From: BEST Corn-Nation
2015 C5 of the Year Winner
Agreed the tune is the place to start. Go check out some of your local speed shops or local Vette clubs and see who they use or recommend as their tuner. Most likely won't be cheap but you don't want cheap anyway when it comes to that. Don't go looking for a guy standing on the street corner with his skirt pulled up and his leg exposed with a laptop....
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
Agreed the tune is the place to start. Go check out some of your local speed shops or local Vette clubs and see who they use or recommend as their tuner. Most likely won't be cheap but you don't want cheap anyway when it comes to that. Don't go looking for a guy standing on the street corner with his skirt pulled up and his leg exposed with a laptop....
On the serious side, start by going down the old school roads of air, spark, and fuel first. Verify your MAF and Throttle Body is clean by simply cleaning them with the appropriate cleaners. Check your air filter to see if it needs replaced. Next, do you need plugs and wires? And are your coil packs ok (most likely they are fine)? Then, make sure your fuel isn't old, your injectors don't have a gazillion miles on them, and maybe run some techron through the system to see if it helps. The only other things I would think about are maybe throttle positioning sensors and checking codes. As long as your motor is sans any weird noises from the valve train I bet it's a simple fix one way or another.
If all that is good to go, then you probably just have a **** tune and it needs some love from a reputable dyno tuner. A ton of people throw in a cam and try to live with a mail order tune. It's a band aid, and a crappy one at best. Here is a thread regarding tuners in your area.
https://www.corvetteforum.com/forums...ento-area.html
Last edited by CinciZ06; Aug 5, 2019 at 03:13 PM.
Thread Starter
8th Gear
Joined: Aug 2019
Posts: 8
Likes: 0
From: Sacramento
Aaarrghh!
Other thing about this 04,the only things that are hooked up,are what needs to be,so I'm probably needing to get into computer with?? Simple tuner and???
Or just go to pro?
(Crap)
Other thing about this 04,the only things that are hooked up,are what needs to be,so I'm probably needing to get into computer with?? Simple tuner and???
Or just go to pro?
(Crap)
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
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
Go to a pro. Consider it mandatory if you don't want to grenade your motor. I re-read your first post, and it honestly describes to the letter a car that has a cam installed and hasn't been tuned! If the seller didn't tell you who tuned it, then it probably wasn't tuned. That information is kind of the first thing thrown out there by sellers, as it should be.
Melting Slicks
Joined: Jan 2016
Posts: 2,398
Likes: 768
From: jefferson texas
Find the best tuner available. Don't cheap out on this. You said the seller was "tight lipped" about the motor. That would make me nervous as hell! Sure do hope this all works out for you. Best wishes and good luck!
Administrator
Joined: Mar 2001
Posts: 368,324
Likes: 24,777
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Moved to C5 Tech.