Krausey_14 New Member 11 Member For: 11y 11m 30d Gender: Male Location: tasmania Posted 12/09/14 11:53 AM Share Posted 12/09/14 11:53 AM Anyone here able to point me in the right direction in getting a 4 inch cat back for my fg xr6t ute, ive already got a 4 inch stainless xforce dump, so im just looking for a good price on a cat back? Cheers Link to comment Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 10y 11m 12d Gender: Male Location: SW Sydney Posted 13/09/14 01:17 AM Share Posted 13/09/14 01:17 AM Any particular reason you want 4"?Single 3.5" or twin 2.5" way more common/easy to find and will support 400rwkw+damn some guys still running std exhaust with 4" dump & 5" cat and making good power, apparently the stock system has decent flowI've got xforce 4" dump, 5" cat and twin 2.5" cat back on my FG ute, can't fault it, only mild steel - cat is stainless thoughFleabay is your best bet Link to comment Share on other sites More sharing options...
Krausey_14 New Member 11 Member For: 11y 11m 30d Gender: Male Location: tasmania Posted 13/09/14 03:15 AM Author Share Posted 13/09/14 03:15 AM Its just what bluepower recommend to me.And I was just going by my assumption that less restrictions is better.Is there much difference between stainless and mild steel apart from price? Link to comment Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 10y 11m 12d Gender: Male Location: SW Sydney Posted 13/09/14 03:57 AM Share Posted 13/09/14 03:57 AM Did they definitely say 4" exhaust or maybe just 4" dump...?It all comes down to what you want to get out of it power-wise. Do you want to get 300rwkw? 500?What mods have you got or planned? The std turbo is going to run out of puff long before a twin 2.5" or single 3.5" cat back exhaust becomes a restriction.I'm a stainless steel fabricator and love the stuff but couldn't really justify the extra cost at the time.Differences are that it won't rust - well not for a lot longer anyway - and will look a lot prettier out of the box.Some say they sound different, and some also say wall thickness is thinner on staino systems - because it doesn't have the same corrosion issues it can get away with it - which would definitely make a difference to sound.Re 4" system, be aware there could be a fair bit more drone, a mate of a mate's car apparently had this issue. Link to comment Share on other sites More sharing options...
Krausey_14 New Member 11 Member For: 11y 11m 30d Gender: Male Location: tasmania Posted 13/09/14 05:49 AM Author Share Posted 13/09/14 05:49 AM Gtx3582r, 1000hp plazaman ic kit, surge tank plazmaman fuel rail, atomic oil pump valve springs id1000, hoping for a easy 400rwkw, I may build a motor down the track so Im hoping the things im doing wont need replacing when I want to go bigger. Link to comment Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 10y 11m 12d Gender: Male Location: SW Sydney Posted 13/09/14 10:34 AM Share Posted 13/09/14 10:34 AM Fair enoughTwin 2.5 or single 3.5 be fine up to 450 but makes sense to go for 4" if you're intending to go further I guessThere's an ebay seller who has a full turbo back 4" staino xforce system for FG sedan, $2300 they should be able to source for ute as wellWhether they'll split a system to not include dump pipe is another question Link to comment Share on other sites More sharing options...
julesk_1972 Member 267 Member For: 12y 5m 29d Gender: Male Location: Perth Posted 14/09/14 04:00 AM Share Posted 14/09/14 04:00 AM (edited) I'm at 398.8rwkw with. GT3582 porting only on 98.Running a full 4" x force SS doesn't drone that bad. Edited 14/09/14 04:02 AM by julesk_1972 Link to comment Share on other sites More sharing options...
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