Join Date: Jun 2001
Location: Farmington Hills, MI
I kept the stock collector in my setup on my 3.5L. I didn't want the car too loud or to kill the mpg, so i left it in and really like how it sounds and performs. If i didn't, i could always take it out and replace it with a "Y" pipe where the collector sits. I ran my 1st gen with too little backpressure for a while and it performed worse and drank gas. Also depends on the mufflers you're planning on running too.