***PENNY MOD*** y/n
12-01-2008, 07:24 PM
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: ***PENNY MOD*** y/n
hes talking about sticking a penny ontop of the fpr spring to increase fp
never tried it,but i think guys say they get 2-3 psi more fp this way.
never tried it,but i think guys say they get 2-3 psi more fp this way.
12-01-2008, 08:54 PM
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Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
Re: ***PENNY MOD*** y/n
Ive read it helps the 305 and 350's. However, its nothing that a good custom tune would take care of.
07-15-2010, 12:25 AM
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Car: 1987 pontiac firebird
Engine: 6.5 turbo diesel
Transmission: t56
Axle/Gears: Ws6 axle
Re: ***PENNY MOD*** y/n
i am bumping this old thread cuz i was wondering if the penny mod really works on v6's i have read a few things about v8s but nothing about people doing it to a v6. are there any negatives to this mod? what are the benefits of the extra fuel pressure?
Last edited by 87bluebird; 07-15-2010 at 12:27 AM. Reason: spelling
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