Flan Posted April 1, 2016 Share Posted April 1, 2016 Hey guys, not too sure if this should be in technical or not. Does anyone have a picture of the join between the exhaust manifold and the exhaust system? Or know the type? Looking to get a custom stainless made but the guy doing it is a while away so he needs to know the connection type. Cheers Quote Link to comment Share on other sites More sharing options...
trebor69 Posted April 1, 2016 Share Posted April 1, 2016 The downpipe to exhaust joins are the same N/A or TT but the manifold to downpipe joins between the N/A and TT are different ....which are you looking for? Also they are bent to a precise shape, if "your man" doesn't have a supra at hand to make the exhaust for then it'll never fit. Quote Link to comment Share on other sites More sharing options...
Flan Posted April 2, 2016 Author Share Posted April 2, 2016 Thanks for the reply, got a few pics off google. Plan is to just have a full stainless system from behind the first cat. Also sorry forgot to say its NA. Cheers Quote Link to comment Share on other sites More sharing options...
Annabella Posted April 2, 2016 Share Posted April 2, 2016 Morning, just bought a second hand 2.5" whiftbitz twin box cat back from a member, they're pretty good if you can get one (not made new anymore). Stick a wanted ad in the wanted section. Whifbitz used to do the decat pipe too. If you go above 2.5" for the n/a they lose back pressure...... Quote Link to comment Share on other sites More sharing options...
trebor69 Posted April 2, 2016 Share Posted April 2, 2016 As above, needs to be 2.5". Quote Link to comment Share on other sites More sharing options...
brom86 Posted April 2, 2016 Share Posted April 2, 2016 Sorry to jump in here but am getting a custom exhaust fitted Monday and was planning 3 inch from the first cat back with a silencer and 3" whifbitz back box. Why would the 2.5 be better? Quote Link to comment Share on other sites More sharing options...
Suprakeith Posted April 2, 2016 Share Posted April 2, 2016 I run a full 3 inch system on my N/A and its perfect!! With the amount of power the N/A has their is no different between 2.5 and 3 inch. Plus if you go 3 inch and decide to turbo the lump or stick in tt lump you won't have to change the exhaust Quote Link to comment Share on other sites More sharing options...
trebor69 Posted April 2, 2016 Share Posted April 2, 2016 It's down to the back pressure that the N/A relies on, yes it's only minimal but there is a difference in running a 3", I've had all variants and the 2.5" decatted with single back box was the best (IMO). Whifbitz also sell a restrictor ring for about £12 in case you go with a 3" and need some pressure. Quote Link to comment Share on other sites More sharing options...
David P Posted April 2, 2016 Share Posted April 2, 2016 N/A Supra + 3" exhaust = pants Too loud, too low and sounds like a dead fart. Quote Link to comment Share on other sites More sharing options...
Suprakeith Posted April 2, 2016 Share Posted April 2, 2016 N/A Supra + 3" exhaust = pants Too loud, too low and sounds like a dead fart. Disagree with that completely it's about getting the right exhaust, I have had loads of people tell me how nice mine sounds and its full 3 inch veilside exhaust system and mine pulls really good so the 3 inch exhaust doesn't effect the performance at all Quote Link to comment Share on other sites More sharing options...
chrex Posted April 2, 2016 Share Posted April 2, 2016 It's down to the back pressure that the N/A relies on, yes it's only minimal but there is a difference in running a 3", I've had all variants and the 2.5" decatted with single back box was the best (IMO). Whifbitz also sell a restrictor ring for about £12 in case you go with a 3" and need some pressure. The restrictor ring is for the turbos to restrict boost pressure. Pretty sure that if the 3" exhaust wasn't good for the N/A, Whifbitz wouldn't have stopped the 2.5" system production. The 4" is there for the blowers... Quote Link to comment Share on other sites More sharing options...
trebor69 Posted April 2, 2016 Share Posted April 2, 2016 The restrictor ring is for the turbos to restrict boost pressure. Pretty sure that if the 3" exhaust wasn't good for the N/A, Whifbitz wouldn't have stopped the 2.5" system production. The 4" is there for the blowers... Yes that is exactly what the restrictor ring was designed for. Quote Link to comment Share on other sites More sharing options...
Annabella Posted April 2, 2016 Share Posted April 2, 2016 The restrictor ring is for the turbos to restrict boost pressure. Pretty sure that if the 3" exhaust wasn't good for the N/A, Whifbitz wouldn't have stopped the 2.5" system production. The 4" is there for the blowers... They just didn't sell enough because not enough N/A's and people often think bigger is better and buy the 3" rather than what suits best. Quote Link to comment Share on other sites More sharing options...
Flan Posted April 3, 2016 Author Share Posted April 3, 2016 Going for 3 inch system because to add a turbo to the engine in the summer. But cheers for the replies Quote Link to comment Share on other sites More sharing options...
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