4" or 5" exhaust?

baseballguy · #1 (**permalink**) 01-09-2009, 10:33 AM

What is the difference, and performance gains of both?

I currently have a 4" turbo back on the truck right now, but Im not sure what kind. It had it on there from before I got it.

I work for a machine shop and was thinking of asking them to bend up some 5" stainless...

would it be worth the money for the performance gains, if any at all?

**stroken04** · #2 (**permalink**) 01-09-2009, 10:37 AM

Sick with the 4in, you would just be pissing away money to replace it with 5in

**CobbsDieselPerformance** · #3 (**permalink**) 01-09-2009, 10:43 AM

Yup, 5" is a waste really. If you need a price on anything let me know.

tex25025 · #4 (**permalink**) 01-09-2009, 12:10 PM

Quote:

Originally Posted by baseballguy

would it be worth the money for the performance gains, if any at all?

If your just using exhaust, tuner, and/or intake then it's not going to be worth it to go to a 5in system. In fact, you'll see some low end loss in power unless your pushing more air and fuel.

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