Join Date: May 2007
Location: New Orleans, LA
heres a tip to gut the cats and keep the stock appearearance, no need to cut them or anything
go to your local building supplier (home depot, lowes, etc..) get 2 cans of acetone ($7 each) pour some in the front two cats, and pour some in the rear cat, make sure you take off the resonator and pour the acetone directly into the cat not the resonator. Its probably a little rusted on but with brute force it will come off.
Let the mid pipe sit overnight then in the morning run the garden hose thru it from front to back, then from back to front, be sure to clear it out well. Then let it dry for 2-3 hours and intall back on the ride. Presto! should be good for 2-3 more hp and 1-2 more mpg with better throttle response and even a tad more low end torque, also the car will be able to beathe a tad better at higher rpms
probably won't be a night and day difference but will help, every little thing adds up