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Re: Dual Exhaust/ Compression and HP loss??
I believe I have a 420a also, and yes it is very slow. But what you dont understand is that as long as you keep your cat, your catback wont have a whole lot of effect on your car. The cat will give it enough restriction to keep from hurting the cars performance. Unless you go with some rediculous 3" pipe. 2.5" y-ed to 2" should be fine.
Your only going to loose bottom end to. Top end will increase.
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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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