Wondering about exhaust piping

[iMod]

So I hear that 2.5 to 2.75" is the best size for exhaust piping on a N/A.

So is that assuming that the piping is mandrel bent? What if it's just bent with a regular pipe bender? The inside of the piping's diameter is smaller at the bends right? So would it be a better idea to go with 3" piping so that you'd have more room inside the bends? Or would you just lose too much backpressure?

That just kinda crossed my mind. Just thought I'd ask.

 

[Ma70.Ent]

I recall that 2.8 inch crush bent exhaust is equivalent to a 2.25 inch mandrel bent exhaust, but don't quote me for that one.

And backpressure is not needed in any system...exhaust velocity is though.

 

[87soup]

So I hear that 2.5 to 2.75" is the best size for exhaust piping on a N/A.

So is that assuming that the piping is mandrel bent? What if it's just bent with a regular pipe bender? The inside of the piping's diameter is smaller at the bends right? So would it be a better idea to go with 3" piping so that you'd have more room inside the bends?

That just kinda crossed my mind. Just thought I'd ask.

A n/a need back pressure to have performance and a 2.75 i perfect even in the bends!!!

I bought the HKS sport cat back, when i was n/a!!! Felt real nice!!! The pipes are mandrel bent as well... I also had a high flow cat sounded real nice and deep!!!

unfortunately i still run that exhaust on my 1J set-up... Too small now but it was very nice for my 7MGE:biglaugh:

 

[Ma70.Ent]

A n/a need back pressure to have performance

The backpressure theory has been disproved so many times...

 

[MaJiKaL TaNk]

The backpressure theory has been disproved so many times...

I've heard that before but don't you need the backpressure for low end power?

 

[Clip]

http://www.burnsstainless.com/TechArticles/Theory/theory.html

exhaust theory, i agree with Ma70, just need velocity.

 

[AJ'S 88NA]

Speaking of velocity MA70, how goes the header project???

 

[87soup]

Well in any case the hks was a damn good buy and i did feel power gain do to velocity or what ever the heck....

 

[Ma70.Ent]

Speaking of velocity MA70, how goes the header project???

I haven't heard any word from Defiant7M in awhile. I'm sure he's going to get to it when he can.

 

[Clip]

Well in any case the hks was a damn good buy and i did feel power gain do to velocity or what ever the heck....

wanna get rid of the hks?