upgrading tpi questions. please help

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Nov 24, 2008 | 10:27 AM

choekstra17

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Junior Member

Joined: Jan 2008

Posts: 49

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From: Milford, Massachusetts

Car: 1992 camaro convertible

Engine: 355ci carbed

Transmission: t5 5 speed

Axle/Gears: 10 bolt 4:10 gears

upgrading tpi questions. please help

I have a 350 TPI and am wondering how far I can go without upgrading or reprogramming the Computer. I want to put a 260 cam, bigger injectors, upgraded throttle body and intake and runners. Will I have to reprogram the computer and if so where and how much will that cost if neccessary. I am a carberated engine guy so this is all new to me. Please help me out

Nov 24, 2008 | 11:10 AM

19 z28 92

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Joined: Nov 2006

Posts: 113

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From: Syracuse, NY

Car: 1992 z28

Engine: carb 355

Transmission: wc T-5

Axle/Gears: 4.11 posi 10 bolt

Re: upgrading tpi questions. please help

If you do all that, you will want to reprogram the computer to get everything out of it. Defnately custom made. As far as where, I can't really help you out there. Somewhere local maybe?

Nov 24, 2008 | 11:53 AM

GTA Sammy

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Joined: May 2005

Posts: 972

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From: Winnipeg, Manitoba. Canada

Car: 1989 T-Top GTA

Engine: 5.7L TPI> 6.2L

Transmission: 700R-4

Axle/Gears: 3.27

Re: upgrading tpi questions. please help

Do these first
https://www.thirdgen.org/tpimod1

Then....read this......
https://www.thirdgen.org/mods2

I think that you would have to do chip burning for the Comp Cams XFi 260..... it's much the same as my LPE 211/219 and I need to do some tuning, although I changed the intake and heads which would make a significant airflow difference over the stock TPI