Compression ratio ?
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Member
Joined: Aug 2001
Posts: 186
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From: Mill Creek, WA
Car: 89 GTA
Engine: L98
Transmission: 700R4
Compression ratio ?
If I add the following:
Headers (Dunno what kind to get)
Siamese Intake Runners
58mm Throttle Body
Dual cold air intake
With the increased air flow, will my chip modify the compression ratio to allocate for the change in increased air flow?
Headers (Dunno what kind to get)
Siamese Intake Runners
58mm Throttle Body
Dual cold air intake
With the increased air flow, will my chip modify the compression ratio to allocate for the change in increased air flow?
Supreme Member

Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Compression ratio is purely mechanical, and is determinded by the chamber volume, and the piston. (higher dome equals higher compression.)
That said, with your mods, assuming you have a MAF car, the computer can compensate for the changes, but, doing some prom burning would optimize the system for your engine, and give you more power.
That said, with your mods, assuming you have a MAF car, the computer can compensate for the changes, but, doing some prom burning would optimize the system for your engine, and give you more power.
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally posted by rezinn
daaaaaaang.. where did you get a generater for your car? I thought production of those went out in the 70s. Shows how much I know.
daaaaaaang.. where did you get a generater for your car? I thought production of those went out in the 70s. Shows how much I know.
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