top speed headers
The bottleneck on these cars is at the catalytic converters. HFC's, test pipes, or ART pipes would do the trick. Some people, like me, have chose to keep their OEM cats because I don't want my aftermarket exhaust to be any louder than it already is.
Exactly how much with OE exhaust I don't know but with a real dual system like HKS or MotorDyne I'm sure it's in the neighborhood of 10 RWHP from the dyno tests I've seen here on DRIVER. SEARCH!Gary
Last edited by gary c; Jul 10, 2010 at 02:46 PM.
Yes the restriction is at the CAT but it is even more so from the other two mufflers - that's why i did the hand test - and with the main muffler off the flow is quite good so even that would reduce the back pressure to the CAT - anyway - there is a loss of enought back pressure from the delete that should be equivalent if not more loss from the HFC - right?
Yes the restriction is at the CAT but it is even more so from the other two mufflers - that's why i did the hand test - and with the main muffler off the flow is quite good so even that would reduce the back pressure to the CAT - anyway - there is a loss of enought back pressure from the delete that should be equivalent if not more loss from the HFC - right?
you're the very first person that I've ever heard of that judges how an exhaust system works efficiently by the "Hand Test." The only real way to tell is by a flow tester or dyno run....!
Gary
^ HAhahahahahhah, yes every noob needs to listen to Gary, trust me! I was once, and still is a noob, and I always agree with him. Kinda feels weird... But he is right, replace with HFCs, get chamber arms for your s-techs and you will be set. I am sure(kotched) you are going to replace your OEM wheels, so when you do you might need to roll you fenders, and def get spacers! gl with all of the installs and just search and you can become very enlightened!
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