Should I get a tune after these mods?
Thread Starter
Instructor
Joined: Apr 2004
Posts: 101
Likes: 0
From: Frederick MD
Should I get a tune after these mods?
Currently, my car has a Blackwing and B&B PRT catback. I have an LS6 manifold coming in the mail and I will probably be getting the Jet Hot headers with no cats after Christmas some time. My original plan was to get a cam soon after and have the car dyno tuned. Now Im foreseeing that money might not be available for quite a few months after I do the headers and I might end up doing gears instead.
My questions are, should I have the car dyno tuned after the intake and headers go on? Will I see enough of a gain to warrant the expense? Will the car run like crap if I slap on the headers with no cats and no O2 sims?
On a sidenote, with 23k miles, should I do new plugs and wires 'while Im in there'?
My questions are, should I have the car dyno tuned after the intake and headers go on? Will I see enough of a gain to warrant the expense? Will the car run like crap if I slap on the headers with no cats and no O2 sims?
On a sidenote, with 23k miles, should I do new plugs and wires 'while Im in there'?
Le Mans Master
Joined: Jun 2004
Posts: 6,752
Likes: 3
From: Bethlehem PA
Originally Posted by C5JONNY
The tune wont be necessary, your car will run fine without it. When your done with all your mods get the tune
Thread Starter
Instructor
Joined: Apr 2004
Posts: 101
Likes: 0
From: Frederick MD
Alright, that was my original stance but I was worried about running lean, not knowing it, and blowing something.
I would think that adding more air in and more air out of the motor would cause the motor to run lean, not rich? Or does the PCM overcompensate with fuel?
Originally Posted by simpleman68
Might run a little rich, but a good tune is worth waiting until a good majority if your mods are done, or you do a mod that requires one. ie cam, heads, gears.
Thread Starter
Instructor
Joined: Apr 2004
Posts: 101
Likes: 0
From: Frederick MD
Excellent. I heard 500 miles is the 'learning time' so to speak of the pcm, since my car isnt a daily driver this would take some time to accomplish. I had read about a pcm reset procedure on c5forum.com, think I should do this after my mods? I would like to enjoy my mods NOW! 
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
Supporting Vendor
Joined: Mar 2002
Posts: 2,073
Likes: 0
From: Loveland CO
Originally Posted by Mike52
Currently, my car has a Blackwing and B&B PRT catback. I have an LS6 manifold coming in the mail and I will probably be getting the Jet Hot headers with no cats after Christmas some time. My original plan was to get a cam soon after and have the car dyno tuned. Now Im foreseeing that money might not be available for quite a few months after I do the headers and I might end up doing gears instead.
My questions are, should I have the car dyno tuned after the intake and headers go on? Will I see enough of a gain to warrant the expense? Will the car run like crap if I slap on the headers with no cats and no O2 sims?
On a sidenote, with 23k miles, should I do new plugs and wires 'while Im in there'?
My questions are, should I have the car dyno tuned after the intake and headers go on? Will I see enough of a gain to warrant the expense? Will the car run like crap if I slap on the headers with no cats and no O2 sims?
On a sidenote, with 23k miles, should I do new plugs and wires 'while Im in there'?
Have fun 
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
I would say no and wait untill you go internal. The PCM will do much to learn and you might want to do an idle re-learn. It is all over the forum, and basicaly pull the POS bat term, wait, re-conect and then start and idle for 5 minutes or something. The drive her like you normal, and the PCM will do the rest. If you are having someone else install and they will tune it should help some. Enjoy!
Dave
Dave