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Im still confussed with HFCs... So we dont need aftermarket FULL exhaust system to gain 10-15whp?? I heard some say without aftermarket full exhaust system, HFCs are worthless because your only gaining 3-5whp with stock exhaust.. Which one is right?? Is there any supporting fact??
As far as the exhaust goes.. I would only do a full catback and get a true dual exhaust with an h pipe or x pipe.. Most exhausts are gonna have an h pipe.. For exhaust go with (Fast Intentions, HKS if you can afford it.., Stillen, Borla also) For real performance gains I wouldn't even waste your time with the Tanabe exhaust or the Greddy Ti-C exhaust. As the Y pipe is the most restrictive part of the exhaust system.
As far as the exhaust goes.. I would only do a full catback and get a true dual exhaust with an h pipe or x pipe.. Most exhausts are gonna have an h pipe.. For exhaust go with (Fast Intentions, HKS if you can afford it.., Stillen, Borla also) For real performance gains I wouldn't even waste your time with the Tanabe exhaust or the Greddy Ti-C exhaust. As the Y pipe is the most restrictive part of the exhaust system.