Is it worth removing the stock cats for straight pipes?
04-02-2007, 06:14 PM
#1
Burning Brakes
Thread Starter
Is it worth removing the stock cats for straight pipes?
Currently I have an 02 Z06 with the following mods:
I/C Maggie w/3.2 pulley
Meth injection
TPIS headers
Stock cats
TI mufflers
Will I pick up much hp/tq if I remove the stock cats and weld in some straight pipes?
I/C Maggie w/3.2 pulley
Meth injection
TPIS headers
Stock cats
TI mufflers
Will I pick up much hp/tq if I remove the stock cats and weld in some straight pipes?
04-02-2007, 10:20 PM
#4
Melting Slicks
Member Since: Sep 2005
Location: eagle mountain utah
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No. Stock cats are fairly restrictive. Metalic cats like Bassanis flow much better than stock cats, about 480 cfm which is almost as good as a high perf muffler (500+ cfm). Stock cats dont hold up well under rich conditions like when your running 11.5:1 under 10 psi. As soon as you get out of the boost and AF ratio gets back to about 14.7:1, all the gas that has accumulated in the cats from the run under boost starts to burn and heat up the cats. A stock cat will melt down sooner under these conditions than a metalic cat.
