high flow cats
Ok, before you say, get rid of the cats. I live 30 minutes out of chicago. So therefore i have to do emitions. So i need cats on the car. But my question is. Even though with the high flow cats ive heard that there is a possibility of not passing emitions. Is this true? Or when i have them installed have the shop box/bag the stock cats to throw back on when emitions comes around? Another thing, will the high flow cats make a difference in my 60 foot or 1/4 time? I know that it adds flow. And i already have a 2.5" cat back. Should i have them just convert the exhaust to true duel and keep the 2.5" headers back with high flow cats? Then when i have the money get the headers for my car?
Another thing, what kind of sound difference can i expect?
Last edited by mngsserder911; 08-29-2006 at 02:17 AM.