who makes a 70-80mm exhaust sys.??

[ca18det_boy]

Does anyone know who makes a really good, mandrel bent, 70-80mm exhaust system? I was looking at RSR but can't find any diameters. I have been searching through old threads for awhile now and still can't find anything! Any help is appreciated.

[Aaron]

im pretty sure Greddy does

[hannibal]

The RSR Exmag II has 80mm piping.http://www.rs-r.com/exmag_gt2.htm

HKS Hiper has 85mm piping and I think Apexi N1 is 3".

[USCS14DUDE]

Is 80mm to big for a na with headers? I mean i have 2.25 now and i know back pressure is a good thing, but is that to much?

[180fan]

5zigen makes a 70mm exhaust. stainless and mandrel bends. The proracer spec-a which you can see from my post a little while back installed also has a burnt blue tip. With an 80, you might have a small drop in torque at the low end, and at the high end it'll pick up a little more. 70mm is a good blend between the two.

[AZhitman]

We do. See sticky at top of 240 Gen Chat.

And 80mm is WAY overkill for an n/a with headers - it's not the backpressure you want, it's the scavenging, which a too-large diameter system will reduce.

[ca18det_boy]

I'm talking about running 20-30 psi

[Camel]

i run a apexi n1 with headers with no ill effects. it says 75 to 85 mm in the documentation.

[AZhitman]

I'm talking about running 20-30 psi

Ah - I see.

Our biggest is 3"...

[extheflow]

i have the blitz nurspec-r it's 85mm stainless(polished)~bling. mandrel bent and sounds beautiful. i highly reccomend it.

[PacManVR4]

I have an old HKS (Not made any more, Old a*s Jasma tag on the muffler) it looks like its aroung 3 1/4 inches or 85 mil I think. its da*n big.

[strykrsilvia]

I have the hks hi power and its 80mm.

[NX95240]

i have a N1with a greddy SS header itis JUNK on a 95 240sx has no problem that i can tell