sport cats - how do they sound

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07-20-2021, 07:29 PM

VetteOwner

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sport cats - how do they sound

I’m tempted to get a set of VAP 200 cell downpipes/cats but was wondering if they increase the volume and/or tone of my stock exhaust system and by how much. I’ve also read that the exhaust gets more raspy. Just wondering.

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07-21-2021, 10:08 AM

fivel

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My 200 cell cats made it sound more throaty than the stock cats.

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07-21-2021, 03:29 PM

AlexJag

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Sounds ok but keep in mind most high flow catalytic converters fail a lot sooner so make sure wherever you buy them provides a proper warranty. I give up and just decat completely. If you need a tuned can tackle that for you including the decat or high flows . With either you will get a check engine light

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2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 111.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 Supercharged, (stock with Alpha Jag ECU tune), estimated power: 600+ hp, 7.7sec 1.8th mi/95mph

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