anyone intalled NHP full exhaust???

[2K3_Boxster_S]

Originally Posted by Jake Raby

And remember that your stock system and the catalytic converters you'll be comparing against are XXX years old and have XXX miles on them. Over time fuel and lubricant deposits start to clog the cats.. To complete an absolute comparison with only one variable for an OFAT analysis you'd need brand new stock cats... Otherwise you are testing old Vs new and thats a rather large variable.

Lets go back to Post #1, I clearly stated what the setup would be (see below).
Now you are talking about putting brand new stock CATS back on for a fair test.
Why would I want to purposely restrict the exhaust flow? The facts were presented Bolt on aftermarket exhaust (headers w/high flow cats, bypass pipes, and performance exhaust) and you stated it would not yield any gains or possibly have a negative outcome. essentially a waste of money. Thats all I care to find out does it or does it not improve HP and Torque. as far as the AFR the stock ECU will not be touched or chipped in anyway. I will try and keep the variables as close as possible. Same dyno, straps, engine temps, IAT's, etc. No i'm not going to monitor the AFR. This is a simple bolt on test.

Originally Posted by 2K3_Boxster_S

Will be installing the following NHP full exhaust. slightly different from pics. I will be running: Headers with Sport Cats, ByPass Mid pipes, and the Muffler.