P_BA_XR6 Member 271 Member For: 16y 9m 7d Gender: Male Location: Castle Hill Posted 31/07/11 09:17 AM Share Posted 31/07/11 09:17 AM what do you guys think I should go for, im just thinking get a 4 inch dump pipe then 4 cat to a twin 2.5 or twin 3 inch Link to comment Share on other sites More sharing options...
xr6t4life Member 129 Member For: 15y 7m 20d Gender: Male Location: Perth WA Posted 31/07/11 11:30 AM Share Posted 31/07/11 11:30 AM depends how much power you are going for if its really big numbers get the twin 3" if its 300-350rwkw twin 2.5 will do fine its probably cheeper to. Link to comment Share on other sites More sharing options...
unclewal Donating Members 583 Member For: 14y 5m 16d Posted 31/07/11 12:25 PM Share Posted 31/07/11 12:25 PM I went 4inch dump to 5 inch cat to twin 2.5, quiet and will be enough to flow plenty of horsepower and its quiet (well quiet enough) Link to comment Share on other sites More sharing options...
dre Resident idiot. Donating Members 2,068 Member For: 14y 5m 16d Gender: Male Location: Melbourne Posted 31/07/11 03:35 PM Share Posted 31/07/11 03:35 PM Really does depend on what your end goal is. Link to comment Share on other sites More sharing options...
f6mark Member 2,908 Member For: 14y 22d Gender: Male Posted 31/07/11 06:57 PM Share Posted 31/07/11 06:57 PM go the 3.5 mate. Link to comment Share on other sites More sharing options...
Trough Lolly Member 4,349 Member For: 20y 5m 27d Gender: Male Location: Mildura Posted 03/08/11 04:44 PM Share Posted 03/08/11 04:44 PM haha neither will work well on his NA Link to comment Share on other sites More sharing options...
g6t Silver Donating Members 328 Member For: 14y 10m 20d Gender: Male Location: sunshine state Posted 03/08/11 11:28 PM Share Posted 03/08/11 11:28 PM twin 3.5 or twin 4: some thing diferent , u get your backpresure from the turbo after that dozent matter 2 much. Link to comment Share on other sites More sharing options...
dre Resident idiot. Donating Members 2,068 Member For: 14y 5m 16d Gender: Male Location: Melbourne Posted 04/08/11 12:21 AM Share Posted 04/08/11 12:21 AM you have forgotten the need for velocity. The op's car is non turbo (or his sig is out of date). the thought of a non turbo with twin 3" is as bad a v6 Late model camira with a chev badge. Link to comment Share on other sites More sharing options...
.BLKPHN. Bronze Donating Members 283 Member For: 14y 14d Gender: Male Posted 04/08/11 12:43 AM Share Posted 04/08/11 12:43 AM I have a twin 2.5" cat back for sale or a whole zorst Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 4m 9d Gender: Male Location: Perth Posted 04/08/11 12:51 AM Share Posted 04/08/11 12:51 AM You guys are soft go twin 4 inch, anything less is gay. Link to comment Share on other sites More sharing options...
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