When would i technically need to switch to 3" exhaust...please help?

When you planning on going over 500 horses, that's when is recommended for you to change to a 3" exhaust.

venom94 said:

ok..im thinking about staying around 450-475....i dont think i will exceed that unless i run nitrous but like i said i dont plan on racing so nitrous would just be part of the "show" package....so if im at 450-475 i shouldnt need to change to 3 right? or would you think it would be a good idea to go ahead and do 3?....thanks for the reply also.

Click to expand...

Well...it does look cool

you might lose some power but it wont hurt anything in my opinion. but if you are gonna spend that much cash and try to make that much power, it would be worth the investment.

This seems pretty cut and try to me. Since you plan to show the car and keep it on the street mostly, it doesn't sound like every last horsepower is your goal. Will 3" exhaust help you make more power? Probably. Will 2.5" exhaust hurt your car? Probably not. By using the 3" exhaust, you will releave a little backpressure, which may or may not help with scavaging.

If you're building a drag car or car you're going to race a lot, 3" exhaust might be a good idea, but if not, don't worry about it; use what you're comfortable with. I really doubt 3" exhaust would make or break you on the dyno either. So what if 3" exhaust netted you 25 more horsepower on the dyno...so at the show you can say "my car dyno's at 475 hp"...people will still be amazed and think of you just the same if you say "my car dyno's at 450 hp". They wouldn't know the difference anyway, it's what you feel when you drive it and, which will not be noticable at that power level anyway.

I say do what you're comfortable with

Sorry for the book...