I run the full 3" TTI setup. You can't run factory tips as they are a restriction and sounds like crap. ?Read that as Chevy mid 80's pickup blat. It isn't tight other than the headers.
That can be said no matter what size tailpipe you run. However there are a few options I've found. One is to run the pipes through he springs if your car has the clearance. The other option is to run a different tank. You CAN run a undercar steel or aluminum tank. They actually make a bolt in tank that works.
3" seems a benefit over 525 hp. What if he has 550? I'm asking for myself now too. Wondering if it's going to be worth it. I know that without strapping it to a dyno with both exhausts it's all just a guess, but what do you think?
Mine doesn't make that much. Well, I don't know what it makes at the crank but it makes 314hp and 450ft'lbs at the wheels and goes 11.70's in full street trim. It loved the big headers and pipes.
I had 3.5 to 3" on my last car. It worked. I always thought that since the gasses as they cool shrink and dropping the diameter increases velocity it would work.
