NA_TURBO Member 532 Member For: 9y 1m 19d Gender: Male Location: Mildura Posted 06/05/20 05:07 AM Author Share Posted 06/05/20 05:07 AM Yeah oh well. I cant seem to find a 4 inch exhaust only 3.5 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,997 Member For: 16y 7m 17d Gender: Male Location: Melbourne Posted 06/05/20 05:15 AM Share Posted 06/05/20 05:15 AM 4 inch dump with a 5 inch cat and a 3.5 inch exhaust is plenty for big big power. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 13y 4m 6d Posted 06/05/20 05:24 AM Share Posted 06/05/20 05:24 AM In cross sectional area a 3.5 is backwards. Yeah yeah it's not, but it is. 99% sure a FG sedan system will fit straight up Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,997 Member For: 16y 7m 17d Gender: Male Location: Melbourne Posted 06/05/20 05:32 AM Share Posted 06/05/20 05:32 AM I'm not so confident an FG cat-back would fit... with some fiddling maybe but it'd be hassle... the part I'd be worried about is going over the rear suspension. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 13y 4m 6d Posted 06/05/20 05:46 AM Share Posted 06/05/20 05:46 AM It's the same though, craddles are interchangeableFrom zee forum itself. 1 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,997 Member For: 16y 7m 17d Gender: Male Location: Melbourne Posted 06/05/20 06:02 AM Share Posted 06/05/20 06:02 AM ah of course, I remember that thread now and he said he had no issues getting around the rear suspension and rear bar etc... good job on bringing that up... that thread also says the turbo sits further back and higher up with the FG manifold, so you'll need a customized dump or cat to fit up to the new location of the cat unless you also change to an FG exhaust manifold and the associated coolant lines etc that come with that. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m Gender: Male Location: Perth Posted 06/05/20 07:36 AM Share Posted 06/05/20 07:36 AM 2 hours ago, k31th said: 4 inch dump with a 5 inch cat and a 3.5 inch exhaust is plenty for big big power. No its not. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,751 Member For: 13y 4m 6d Posted 06/05/20 08:04 AM Share Posted 06/05/20 08:04 AM The dump pipes are different though between ba and FG. So I would interested if the interface between catbacks is the same, at least in the xforce range.If xforce was smart they would keep the flange mount in the same spot to allow interchangeability Link to comment Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 10y 9m 15d Gender: Male Location: SW Sydney Posted 06/05/20 08:19 AM Share Posted 06/05/20 08:19 AM @JETURBO what have you seen from a single 3.5" 1 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,997 Member For: 16y 7m 17d Gender: Male Location: Melbourne Posted 06/05/20 08:44 AM Share Posted 06/05/20 08:44 AM 1 hour ago, arronm said: No its not. I guess you may be thinking in different terms to me, then... big big might be around the 500rwkw mark and 3.5" will easily flow that far. 1000kW it's probably not going to be enough haha Link to comment Share on other sites More sharing options...
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