do you remove your cats ?

Fishstyx

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Why, isn't the o2 sensor before the cats?

There is. There's one before and after so the engine computer can tell the cats are in and working. Most emissions inspection these days simply relies on downloading emissions data from the OBD port.

IIRC, if you delete the cats you'll want to retune to disable the sensors after the cats.
 

devildog1679

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We don't have emissions testing in WI. Just want to make sure removing and not tuneing will damage the engine.
 

casper gt

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We don't have emissions testing in WI. Just want to make sure removing and not tuneing will damage the engine.

wouln't nessesarily damage anything on it's own, but without a tune your CEL will be on permenately & when you do have a real problem you may not know it till it's too late.

the big benifit to removing the cats & tune is disableing the "cat cooling" progam anyway.

my :2cents: get a tune or leave the cats.
 

devildog1679

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wouln't nessesarily damage anything on it's own, but without a tune your CEL will be on permenately & when you do have a real problem you may not know it till it's too late.

the big benifit to removing the cats & tune is disableing the "cat cooling" progam anyway.

my :2cents: get a tune or leave the cats.

Great point
 

jayman33

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Yes, get a tune if you remove your cats. My wife hates the smell after I removed the cats.
 

ZXMustang

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I added the BBK cat delete pipes to the stock H, and put back on the stock mufflers. It sounds great, and very mild. I would like to try some GT500 mufflers next, but so far the cat delete pipes work great. No more cats....meow.
 

betsvt

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im running no cats and it made the car sound alot better. yes it is loud as hell but there is hardly no cruising drone AT ALL. go for it
 

Bmr4life

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I have the Lethal O/R H and it does add some sound, but not much. I'm thinking about GT500's axle backs. It does add some power though.
 

NickSezz

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I have the Lethal O/R H and it does add some sound, but not much. I'm thinking about GT500's axle backs. It does add some power though.

The GT500's and o/r H sound nice. I like my set-up a lot. It is as loud as I would want to go though. I only wish there was no exhaust hissing at part throttle, and no, there isn't a leak.
 

F2Kmech

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I have the Lethal O/R Xpipe. Only issue is it makes the exaust hang low around the resonators. I've tried adjustments but it doesn't fit up as tight as it did when stock. Plus, I have it with the GT500 mufflers and it got much louder. A good loud.
 

Mikeg1028

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Is the x pipe giving you guys any cabin drone I have a roush axle back on on mine with no other mods...
 

Mystickeith50

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no drone here either with arh long tube, o/r x, and bassani race axle backs....although i still dont know what drone sounds like.
 

Ivan 5.0

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I had the SW retro catback and it had a little bit of drone. Drone was gone after I installed SW LTs w/ catless XP. Still very quiet and idle and cruising speeds.
 

NickSezz

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Crappy vid IDK why it wont look good on youtube...not an IT/IS guy...
 

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