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Re: Dual Exhaust/ Compression and HP loss??
I would just run 2.5" to the y-pipe then like 2" to each muffler. As long as you keep the cat you will be fine. Bigger exhaust wont make you lose compression. It will mess with your exhaust gas velosity and that is what slows down your car.
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98 Eclipse GS Turbo
Megasquirt 2 - Holset HY35 Turbo - Built motor - P&P Head and Intake - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - Aeromotive AFPR - 650cc Injectors - Fidanza Flywheel - Zoom clutch - 13" Cobra Front Brakes - AEM WB - Devilsown meth injection - 3.55 Final Drive gear ratio
1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i - DD
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