Paul R Posted September 18, 2009 Share Posted September 18, 2009 Hi, Not having much in the way of response over on clubaristo with this, so thought i'd ask here I'm having a new custom stainless exhaust made up for my JZS161 Toyota Aristo Vertex TT (V300). My question is, how far (power wise) can you go with 2.5" de-cat and center section, with twin 2.5" exhaust system? I'm debating wether to go 3" straight through - But I wont take the power past 500bhp, so I'm not sure it's worth the extra cost? Cheers, Paul. Quote Link to comment Share on other sites More sharing options...
paul mac Posted September 18, 2009 Share Posted September 18, 2009 Hi, Not having much in the way of response over on clubaristo with this, so thought i'd ask here I'm having a new custom stainless exhaust made up for my JZS161 Toyota Aristo Vertex TT (V300). My question is, how far (power wise) can you go with 2.5" de-cat and center section, with twin 2.5" exhaust system? I'm debating wether to go 3" straight through - But I wont take the power past 500bhp, so I'm not sure it's worth the extra cost? Cheers, Paul. you should get 500hp on a 2.5" system, my car made this with HKS superdragger which has a section in it less than 2.5" Quote Link to comment Share on other sites More sharing options...
Paul R Posted September 20, 2009 Author Share Posted September 20, 2009 ok cheers mate.....wonder if it restricted your top end? Paul. Quote Link to comment Share on other sites More sharing options...
Paul R Posted September 22, 2009 Author Share Posted September 22, 2009 No one else got any thoughts??? Come on, nearly all of you have aftermarket exhaust on your 2JZ-GTE's!!! Paul. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 22, 2009 Share Posted September 22, 2009 2.5 inch is more than adequate, cheaper, has better ground clearance, should be quieter and lighter. The only way to know for sure is measure the back pressure with both size systems and see if there's much of a difference. It's easy to do with a bit of fiddling about. Quote Link to comment Share on other sites More sharing options...
Paul R Posted September 22, 2009 Author Share Posted September 22, 2009 2.5 inch is more than adequate, cheaper, has better ground clearance, should be quieter and lighter. The only way to know for sure is measure the back pressure with both size systems and see if there's much of a difference. It's easy to do with a bit of fiddling about. Cheers Chris, Thats what I was after I think i'll go for 2.5" all the way through as you say. i'll never take the car past 500bhp. I'm only planning on a small single in the future.. Paul. Quote Link to comment Share on other sites More sharing options...
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