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chuckbad 03-27-2014 09:46 PM

cat delete or high flow
Hey new to the ls1 just bought an 01 z28 auto 83k bone stock except for the K&N filter,getting the unpleasant rotten egg smell so I guess the exhaust is the first mod on my list. Should I delete the cats or replace them live in mi no emission tests and I daily drive almost 100 miles a day to work and back

WhiteHawk 03-28-2014 04:56 PM

Re: cat delete or high flow
Michigan? Hell yea get rid of them! Get a nice set of long tubes and a good cat back. If you are worried about sound, try the dynomax muffler that has the flapper valve.


Mr99SS 03-28-2014 07:20 PM

Re: cat delete or high flow
ive used random tech cats but they are high ... very easy to tune out with EFI live

chuckbad 03-29-2014 10:37 PM

Re: cat delete or high flow
wasnt sure if it would hurt anything was leaning towards long tubes no cats and slp lm1 or a flowmaster

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