C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

TPI with HSR...PROM Programming?

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Old Oct 15, 2011 | 05:55 PM
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Etz2001sn
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Default TPI with HSR...PROM Programming?

Hi there...

i've got a 355 with a comp cams 260XFI cam and a Holley Stealth Ram in my 1986 Z28 (i've got an LT1 and LS6 car as well) and i'm trying to find someone to program the PROM. I know i don't have a C4....but i figured somebody with a corvette would know where to point me.

I was planning on having AZTPI.com do it, but then i noticed they closed. Does anybody have a recommendation of someone that can program MAF cars?

i need all the help i can get....i had a feeling if i dragged my feet i'd be out of luck...but the Camaro restoration project has taken longer/more work/more money than i originally planned.

the motor has the following specs:

1969 350 + .030 over
72cc GM Heads
10.25:1 Pop Up pistons
Comp Cams XFI 260 Roller Cam
Comp Cams Roller Lifters
Comp Cams Mag 1.6:1 Roller Rockers
1 3/4 headers
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Old Oct 15, 2011 | 08:20 PM
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http://www.pcmforless.com/index.php?...id=2&Itemid=43

Assuming you have a '165 MAF ECM
specify the '89 Corvette ARAP (Broadcast code ) as your base.
Gives extra cold start fueling needed because no cold start injector on HSR.

As you can see, you can also change other operating parameters
such as VATS delete ( needed for retro fit app )
EGR delete
and the temp the fan turns on ( stock is 228F )

Last edited by rodj; Oct 15, 2011 at 08:23 PM.
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Old Oct 16, 2011 | 11:40 AM
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thank you for the help.

im looking forward to running the 355 HSR/t56 combo....a step up from the stock 305tpi/auto it had!
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