tpi or tbi upgrade

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Apr 18, 2005 | 02:48 PM

thirdgenrs

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Joined: Feb 2005

Posts: 130

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From: St. Peters, MO

Car: 90 RS Camaro

Engine: 383L98

Transmission: t-56

Axle/Gears: 10bolt 3.42/posi

tpi or tbi upgrade

i dont know what is better... Should I upgrade my throttle body on my tbi to a larger one or should i put a tpi on instead.... which would yeild a better performance? this is not a stock 305 by the way... it has upgraded cam, compression, and bored .30 over. i have a tpi setup in my garage right now.. would i be better of selling that and just getting a bigger tb or just put that on? thx for any help

Apr 18, 2005 | 04:54 PM

CC89Formula

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Joined: Dec 2004

Posts: 335

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From: Amarillo TX

Car: 89 Formula

Engine: 5.7 TPI

Transmission: 700R4

IMO I would actually go carb, BUT thats just me. If you dont want to do that, go TPI.

Apr 18, 2005 | 05:36 PM

TPI-454

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Joined: Dec 2004

Posts: 133

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From: New York, NY

Car: 1989 Trans-Am

Engine: 454-Motown SBC w/HSR

Transmission: 6-Speed

Re: tpi or tbi upgrade

Quote:

Originally posted by thirdgenrs.i dont know what is better... Should I upgrade my throttle body on my tbi to a larger one or should i put a tpi on instead.... which would yeild a better performance?

I'd honestly go with TPI. I hate saying that it's 'better' than TBI, so let's just all agree with the fact that TPI has much more potential (aftermarket wise).