Exhaust tips

[Hobbes]

I got my set of 3.6 mufflers today. They came off of a 997. I took a look at the exhaust tips and noticed they had 'vents' on the inside. I was wondering what these things do, if anything. If they are cosmetic, great, otherwise any info would be appreciated.

Thanks,

Ken

:renntech:

[Benjamin Choi]

I got my set of 3.6 mufflers today. They came off of a 997. I took a look at the exhaust tips and noticed they had 'vents' on the inside. I was wondering what these things do, if anything. If they are cosmetic, great, otherwise any info would be appreciated.

Thanks,

Ken

:renntech:

i find it comical that people clown on the new lexus IS-F faux tip when in fact the whole point of a tip is completely cosmetic.

[Hobbes]

Agreed. They have to justify the $$$. Thing is with these tips, unless you are on the ground looking up at the exhaust,y you won't even see them.

[Jon996]

I got my set of 3.6 mufflers today. They came off of a 997. I took a look at the exhaust tips and noticed they had 'vents' on the inside. I was wondering what these things do, if anything. If they are cosmetic, great, otherwise any info would be appreciated.

Thanks,

Ken

:renntech:

OK, I'll take a wild guess! Looking at the shape, I think you are holding them upside down, so the slots would be at the bottom. If this is the case, maybe they would let the initial condensate from a cold engine drip off rather than collect on the lip like with mine. OK, I said it was a guess . . . :D

[Orient Express]

The slots that you ask abut are actually Kamm effect vortex generators. They help smooth the exhaust flow resulting in higher throughput and more horsepower. These KEVGs add 15 HP to the 997.

This design was originally pioneered by Kamm Nowegotcha in the 1937 Berlin GP on the Auto Union GP cars.

[perryinva]

You had a good ploy going until you used the last name Nowegotcha...almost as bad as the law firm of Dewey, Cheatum, and Howe.

[KevinMac]

The way I understand it is to smooth exhaust exit, not for power but to keep resonance down!

Edited February 2, 2009 by KevinMac

[wross996TT]

The slots that you ask abut are actually Kamm effect vortex generators. They help smooth the exhaust flow resulting in higher throughput and more horsepower. These KEVGs add 15 HP to the 997.

This design was originally pioneered by Kamm Nowegotcha in the 1937 Berlin GP on the Auto Union GP cars.

LMAO...nice one OE.

[phillipj]

The slots that you ask abut are actually Kamm effect vortex generators. They help smooth the exhaust flow resulting in higher throughput and more horsepower. These KEVGs add 15 HP to the 997.

This design was originally pioneered by Kamm Nowegotcha in the 1937 Berlin GP on the Auto Union GP cars.

I heard they were banned by the FIA in 1938 as Alien technology :lightbulb: (which of course would be an unfair advantage.)

[judgejon]

The slots that you ask abut are actually Kamm effect vortex generators. They help smooth the exhaust flow resulting in higher throughput and more horsepower. These KEVGs add 15 HP to the 997.

This design was originally pioneered by Kamm Nowegotcha in the 1937 Berlin GP on the Auto Union GP cars.

LMAO...nice one OE.

ditto...