xr6tute Member 50 Member For: 18y 2m 23d Gender: Male Posted 02/02/08 06:35 AM Share Posted 02/02/08 06:35 AM hi boys,sorry to bring this up again I am sure it has been discussed many times, but I am new to the forum.just wondering if people have been gutting out the stock cat??? what are the advantages and disadvantages?? the car is running a k&n filter in the original box with a second CAI. 8psi generic tune (getting custom tune very soon).I am thinking if its a good thing to do for now until I get a full exhuast system, then I will gutt the cat out before the tune. thanks Link to comment Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 17y 9m 6d Gender: Male Location: Melbourne Posted 02/02/08 06:41 AM Share Posted 02/02/08 06:41 AM I'd loose the center muffler first, then maybe a hi flow cat with full exhaust later on. Link to comment Share on other sites More sharing options...
AzMahoony Hench, but no longer shredded or tanned. Member 3,343 Member For: 17y 11m 4d Gender: Male Location: Canning Vale, W.A Posted 02/02/08 06:49 AM Share Posted 02/02/08 06:49 AM I'm running 340 with the standard dump and 'standard' cat Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 11d Gender: Male Location: Melbourne, VIC Posted 02/02/08 07:42 AM Share Posted 02/02/08 07:42 AM I'm also 'modifying' my standard cat before my next tune..... Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 17y 8m 17d Gender: Male Location: Nrth Qld Posted 02/02/08 08:13 AM Share Posted 02/02/08 08:13 AM Can you split the stock cat open and fit a pipe down the guts of it then weld it back up? How do they go for spitting black crap out the back? Dont wanna have black crap all over my tailgate.....Can the hi flows cause that black soot as well? Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 11d Gender: Male Location: Melbourne, VIC Posted 02/02/08 08:20 AM Share Posted 02/02/08 08:20 AM The cat has 2 outlets so a straight pipe I dont think would work down the guts of it... Dunno about how dirty it would be though... Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 17y 8m 17d Gender: Male Location: Nrth Qld Posted 02/02/08 08:24 AM Share Posted 02/02/08 08:24 AM Ah yes that's right! der! Could run a straight pipe through the cat then fit a Y piece. that's what has to be done with the hi flows. Link to comment Share on other sites More sharing options...
xr6tute Member 50 Member For: 18y 2m 23d Gender: Male Posted 02/02/08 10:06 AM Author Share Posted 02/02/08 10:06 AM will the car need a tune as soon as I gut the cat??? Link to comment Share on other sites More sharing options...
ROLMDL role model Member 1,111 Member For: 18y 11m 21d Gender: Male Location: Melbourne,S.E Posted 02/02/08 10:28 AM Share Posted 02/02/08 10:28 AM that would be the ideal thing to do to get th best gains out of the mod Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 11d Gender: Male Location: Melbourne, VIC Posted 02/02/08 02:27 PM Share Posted 02/02/08 02:27 PM will the car need a tune as soon as I gut the cat???If your car is stock it'll overboost and go into limp mode if you give it a boot... If your car has a tune, I think it may overboost and lean out and that can lead to major damage... I'd get a custom tune asap or drive like a girl till you do.... Link to comment Share on other sites More sharing options...
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