Do u need a tune after header/lid install?
wrong forum man 
Yout dont need a tune, i ran my car with most of the bolt-ons and a 3600 stall converter and the car still ran very well (high 11's) with no tuning except playing wit the HPP3
Yout dont need a tune, i ran my car with most of the bolt-ons and a 3600 stall converter and the car still ran very well (high 11's) with no tuning except playing wit the HPP3
Like they said You don't need a tune, but it can find some extra ponies for you from leaning it out. You will be running rich after the header install. I personally don;t think it is worth it unless you are buying a copy of edit for yourself like I am going to do, so you can retune it with every mod yourself.
Originally Posted by cjacks7
Like they said You don't need a tune, but it can find some extra ponies for you from leaning it out. You will be running rich after the header install. I personally don;t think it is worth it unless you are buying a copy of edit for yourself like I am going to do, so you can retune it with every mod yourself.
Not all people run rich enough though to effect performance greatly. A tune would help but it is not nessasary.
didn't need a tune when i installed the bassani headers with y-pipe and cats. matter of fact during the dyno run testing the headers, the ECM showed 990-1002 coming from the O2s. even after they installed the airlid w/polyfoam filter. so they installed the MAF housing and brought them down to 890-910. graphs here.
http://www.stealthram.com/99formulatimeslip.html
http://www.stealthram.com/99formulatimeslip.html
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TECH Enthusiast
Joined: Jun 2003
Posts: 720
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From: So Cal
Originally Posted by kbronSS
Im waiting on my pacesetters, they should be here anyday, also a lid. Will i need a tune?
I would say check the a/f after to be sure. My car went way lean (almost 14 to 1 at 3500rpms) after my pacesetter install. For some reason the LT's combined with all my other bolt-ons caused this. Most people do not have a problem, but your best bet is to get it checked just in case. Better safe than sorry. Take Care and Good Luck.
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