Removing cats for MPG tahoe w/ 5.3

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Sep 5, 2012 | 07:42 PM

#11

03sierraslt

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From: Western PA

Also if I am not mistaken Lean cruise will heat them up and trigger COT and make it dump fuel to compensate. Its been along time since I messed with this stuff as I have off road mid pipes.

Sep 6, 2012 | 06:40 AM

#12

bk_cauley

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From: Thomasville, ga

Cats are off. If i dont like the results i will flash the stock file back on and put them back.

Sep 6, 2012 | 08:50 AM

#13

MyLS1Hauls

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Only thing you'll gain by ditching the cats is noise and smell

Sep 6, 2012 | 09:26 AM

#14

LT-1 SS

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not trying to jack the thread but how much performance would be picked up by gutting/removing cats

Sep 6, 2012 | 10:17 AM

#15

01WS6/tamu

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From: somewhere in TX

None that's noticeable unless they are stopped up or well on the way to being dead.

You might see a 2-3 horse improvement max and only way you'd ever know it is if you made a back to back dyno pull.