Is there a specific PROM for TPI
Thread Starter
Senior Member
Joined: Jan 2009
Posts: 611
Likes: 2
From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Is there a specific PROM for TPI
http://www.summitracing.com/parts/NAL-16139566/
This is what made me ask. I figured that it would have to be more specific than that (auto trans, TPI or TBI, MAF or MAP)
And if so, what prom does a 350 TPI use?
This is what made me ask. I figured that it would have to be more specific than that (auto trans, TPI or TBI, MAF or MAP)
And if so, what prom does a 350 TPI use?
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Is there a specific PROM for TPI
the one you link is only for TBI trucks; 87 -93
A 350 TPI Prom to suit either MAP or MAF
many different ones; any time GM made an adjustment to the tune they gave the Prom a new number
A 350 TPI Prom to suit either MAP or MAF
many different ones; any time GM made an adjustment to the tune they gave the Prom a new number
Thread Starter
Senior Member
Joined: Jan 2009
Posts: 611
Likes: 2
From: DE
Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Re: Is there a specific PROM for TPI
I thought thought so. How can you know which you car needs? Or does it make the most sense to get one and tune it for your car specifically?
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Is there a specific PROM for TPI
Any prom matching your combo will work
As you can see there are 3 listed for 90 F Body 350 TPI but a similar 91/92 prom
would prob work just as well
http://www.chevythunder.com/prom_bcc_1990.htm
Only if you have made changes to your engine
As you can see there are 3 listed for 90 F Body 350 TPI but a similar 91/92 prom
would prob work just as well
http://www.chevythunder.com/prom_bcc_1990.htm
Only if you have made changes to your engine
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