Anyone know of a good high performance Cat, or...
#1
Anyone know of a good high performance Cat, or...
If there is even such a thing? Having some custom exhaust snags and need to put a Cat back on to get my exhaust shop to do more work.
#6
Actually thats worse than a correctly functioning stock cat.
The open chamber allows the exhaust flow to expand and swirl before exiting the other side...which creates backpressure. The large surface area also allows for a cooling effect that contributes to loss of exhaust velocity. BTTT
If you really dont want a cat but have to at least have the appearance of having one for visual inspections you can gut one and run a straight pipe though the center....it looks like a cat, operates as a testpipe. BTDT
If you really dont want a cat but have to at least have the appearance of having one for visual inspections you can gut one and run a straight pipe though the center....it looks like a cat, operates as a testpipe. BTDT
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#10
I replaced mine with straight pipe...
...but it does make a different noise now. When I accelerate, the pipes makes a "flapping" sound. Not sure how else to describe it. The cats were gutted before I replaced them, so obviously I didn't notice any performance difference.