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Location:
Hong Kong
Registered:
November 2003
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Re: 20v exhaust
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Thu, 26 May 2005 02:29
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Hi guys
I offer my mods for discussion.
http://www.my-acoustic.com/Car/intake_exhaust/cust om_extractor/custom_extractor.htm
http://www.my-acoustic.com/Car/intake_exhaust/muff lers/mufflers.htm
I think it should not be more than 2 inches because of observation of: -
1) jet fighter - they are fastest when the last section / exhaust flare closes / become smaller
Right?
2) Ferrari, Lamborghini, and those 450bhp sports car class normally have twin pipes and each are no bigger than 2 inches.
I never measured them before but watching from videos, it's around 2 inches and no more than 2.5 inches for sure.
Regardless of V8, V10, V12 versus / compared to our 4_in_line / versus turbos and what lot .... BHP = BHP = total flow and is a 450bhp to massive 600bhp+ can sustain using twin 2 inches pipes then single 2 inches pipe would be more than enough for us.
Current WRX, EVO comes stock 280bhp single 2 inch pipe. In fact my friend's WRX 5 years old, runs 1.7 inches stock. All he does is remove the CAT. I know I know it's not environmental friendly. Well he removed 2 out of 3 and retain the last one only.
On dyno he recovered around 30 bhp be removing the front 2 cats.
My current setup runs bad at low rev / low throttle when I swap in the MATOLA straight flow.
I kinda regret using such big pipes 
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