Guest Modi Guests Posted 26/05/04 03:09 AM Share Posted 26/05/04 03:09 AM Does anyone know if replacing the stock Cat with an aftermarked hiflow Cat gives any performance gain if no other upgrades are done to the exhaust system? Link to comment https://www.fordxr6turbo.com/forum/topic/10970-replacing-stock-cat/ Share on other sites More sharing options...
geea Site protagonist Lifetime Members 4,320 Member For: 21y 11m 23d Gender: Male Location: At the lights, waiting for you. Posted 26/05/04 03:46 AM Share Posted 26/05/04 03:46 AM The cat is the most restrictive part of the exhaust I believe. If you have a look at Brian's (BCL) exhaust it has a 4"cat. I think if you were to replace only the cat you would have improvemnet.Geea. Link to comment https://www.fordxr6turbo.com/forum/topic/10970-replacing-stock-cat/#findComment-126870 Share on other sites More sharing options...
Benny Member 1,869 Member For: 21y 8m 29d Gender: Male Location: Newcastle Posted 27/05/04 02:32 AM Share Posted 27/05/04 02:32 AM I believe replacing the cat with a nice straight through pipe would make a noticable difference. The only set back is the spoil sports at the RTA my not look kindly upon this. Link to comment https://www.fordxr6turbo.com/forum/topic/10970-replacing-stock-cat/#findComment-127256 Share on other sites More sharing options...
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