ballerchris510

I was thinking of cutting my stock cats off and weld in pipeing inplace of the cats that way i dont mess up the cats by gutting them does anyone know what size pipeing it is i went to autoparts today and they sell 18" exhaust pipeing for 5bux ea. but didnt buy it because wasnt sure if it was 2.5" or 2.25" or 2" ?? how much louder would it be any power difference? for now all i have for exhaust is a borla cat-back.... Thanks

ballerchris510

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kyemt

iTrader: (1)

i think its 2 in, it will be louder and when i did it i noticed a power difference seemed like alot of power it was noticeable to say the least

ballerchris510

cool thanks.... does anyone know the size for sure???

JonB

iTrader: (3)

It's 2 1/4, aftermarket y's such as slp or borla are 2 1/2.

ballerchris510

thanks man yea but those y's are expensive... im just going to cut off the cats and weld in the 2.25" tubing inplace of the cats for now because i will be getting lt headers and ory soon..... would an ses light or anything come on when i take off the cats?? also how about if when i unbolt everything and start the car up to see how it sounds open headers would it then have a ses and would have to reset pcm thanks....

PureWS6

You will get a light because your rear O2 sensors will know that they cat's are not working correctly (because they are not there). You should buy 2 O2 sims for your rear sensors to fix that problem.

kyemt

iTrader: (1)

i have a diablo so i tuned out the rear 02's and no light sounded very badd, i to cut the cats because of teh cost of a off road pipe, 225 or 25 i liked the 25 much better

ballerchris510

yea the 25bux does sound better and i will just leave the light on wont bother me..... also does anyone know if two staright pipes would fit/lineup or do they need an elbow what degree??? i believe the driver side one can just be cut and put a straight one not sure??

ballerchris510

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