Which aftermarket prom is best?
Thread Starter
Junior Member
Joined: Mar 2000
Posts: 51
Likes: 1
From: San Antonio, TX, USA
Car: 89 IROC
Engine: 5.7 TPI
Transmission: 700R4
Which aftermarket prom is best?
Ive got a 89 IROC 5.7L TPI motor. I've ported my plenum, gutted my MAF, hollow CAT, headers, 3" exhaust, ignition box, K&N filters, etc.
Anybody have a clue as to which aftermarket prom chip might work best for me?
It's basically a stock motor and I just wanted to hear about people's experience with the more common prom's out there.
Thanks
Anybody have a clue as to which aftermarket prom chip might work best for me?
It's basically a stock motor and I just wanted to hear about people's experience with the more common prom's out there.
Thanks
TGO Supporter
Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
The one that you make on your own.
The only thing any off the shelfer has been able to do with a decent efficiency is lighten your wallet.
The only thing any off the shelfer has been able to do with a decent efficiency is lighten your wallet.
Member
Joined: Sep 2005
Posts: 325
Likes: 0
From: Midwest
Car: 1991 Camaro RS
Engine: 383 LT1
Transmission: T56
Axle/Gears: 4.10
I recommend calling T.P.I. Specialties and telling them what you have done to your motor. They can burn you a custom program tailored to your modifications. They do all of the programming on my LT1 computer and do a great job. It may cost a little more than an off the shelf unit, but will be much more worth it. (Stekman is right, the off the shelf unit I bought for my 91RS TBI (Hypertech) was a joke and did successfully lighten my wallet with no return.
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