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i would like to cut of the muffler and just fill the gap with 3 1/2 in. pipe will it improve mi milage, i hav heard it will give more power, also will it cause any codes?:grd:
 

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will also be very loud
 

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so you have an lly? or lbz?
 

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lower egt's, but with that cat still in place (if you have one) it's not worth it.

you won't notice any performance gains. i didn't anyway, with my 4" straightpipe. turbo will spool up quicker with no cat
 
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