Whats the best catylac converter size

mrnickleye · 02-09-2007, 05:15 AM

If your car is running 'really' nice, and all the systems are working normally, then a performance cat should be OK. But if anything else is wrong, the perf. cat may not work as efficient as a regular size 'normal' one.

The perf. cats tend to flow more freely.

I recommend going with a 2.5" system for a N/A, and 3" for turbo.

02-09-2007, 05:15 AM	#4
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	If your car is running 'really' nice, and all the systems are working normally, then a performance cat should be OK. But if anything else is wrong, the perf. cat may not work as efficient as a regular size 'normal' one. The perf. cats tend to flow more freely. I recommend going with a 2.5" system for a N/A, and 3" for turbo. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.