Thinking of re installing stock WS6 catback, bad idea ??

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Sep 12, 2004 | 01:55 AM

#21

Cool Z

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From: DFW,TX

Hey Damian. If the Triflow flows so bad, why did they not gain horsepower or torque when the removed they Triflow muffler and tail-pipes?

Last edited by Cool Z; Sep 12, 2004 at 09:34 AM.

Sep 12, 2004 | 10:35 AM

#22

f-bodman

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From: Grand Rapids, MI

Quote:

Originally Posted by spoonfed

I can't argue the merits of stock WS6 exhaust versus aftermarket power losses/gains but I can say that with my cutout open I only pick up 7 rwhp and 6 ftlbs.

I'm running a H/C,LT, bolt-on, M6 car making 402 rwhp through the WS6 exhaust and 409rwhp with the cutout open. The beauty of this setup is that my car is not that much louder than stock(which I think is pretty healthy sounding) and I picked up two spare complete WS6 exhausts for free off guys replacing them.

Do you need a third?

Sep 12, 2004 | 07:56 PM

#23

98 Z

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From: Texas

Well being overly loud alerts many people including the local police to you, so I'd probably consider a different cat-back honestly.

That loudmouth is nothing but a resonator from what I read about it.

A Magnaflow is a nice sounding setup like I have.

Sep 12, 2004 | 08:17 PM

#24

BLK02WS6

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From: on the dyno tuning in MD

Mine is 25rwhp and 40rwtq between the cutout open and the stock WS6 exhaust. Holds true at the track as well - ran it with it capped up just to see and it was 2 tenths/2 mph slower.

Since I don't race on the street, I don't care - I like it quiet so it doesn't get the wrong attention.

Sep 12, 2004 | 10:49 PM

#25

98TA86

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From: Norman OK

BLK02WS6 how does it sound with it capped?

Sep 13, 2004 | 12:09 AM

#26

JamRWS6

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From: Dallas, TX

Quote:

Originally Posted by Damian

Because i've personally done back to back testing on the "SS" catback(same muffler as WS6) vs. stock on my car. The "SS" muffler made 2 more HP. Which was probably more dyno variation than anything...

The WS6 catback with a cutout would work, but expect to lose a minimum of 10-12 rwhp over what you've got now through the muffler....

That's great and all......so you dynoed on the same exact day and swapped the catback and then re-dynoed under the exact same conditions?

I'm just wondering......my car ran faster with the stock catback than it did with the Corsa.....and that is a straight through muffler. Not to mention NUMEROUS others which have gained JACK from swapping catbacks.

And like was said above people are losing less than 10rwhp on a 400RWHP car with that catback vs a wide-open cutout.
Maybe you should try dyno testing again. Personally I'll stick with my statement of 5-10rwhp loss since that seems to be the COMMON outcome.

Sep 13, 2004 | 07:56 PM

#27

BLK02WS6

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From: on the dyno tuning in MD

Quote:

Originally Posted by 98TA86

BLK02WS6 how does it sound with it capped?

Very stealthy! It sounds only slightly louder than a stock WS6 (because of LT's & no cats) only mine sounds like a plug wire is off

Just a little lopey!

Mine still goes 11.70's capped up, and surprises a lot of people because it is so quiet. If I did decide to bust someone on the street, they'd never hear it coming. Sleeper

...well, except for the rollbar and ET Streets/skinnies.

If you race only on the track, it is the inexpensive way to go that keeps the cops off your back! Takes 1 minute to reach under and open the cutout at the track.

Sep 13, 2004 | 08:11 PM

#28

BLK02WS6

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From: on the dyno tuning in MD

BTW - my dyno pulls where I picked up 25 rwhp and 40 rwtq with the cutout open were consecutive pulls, so I know it was a real difference. Also, my passes at the track were consecutive as well, so no weather variation was involved.

It could just be that my combination likes a free flowing exhaust (6.0L with a big cam) compared to others that have found little difference, but I found my car picked up a tenth with the cutout open when I had a 346 (same LT's and WS6 catback) on consecutive passes.