Multics Posted February 19, 2008 Share Posted February 19, 2008 ... for my NA. I've been reading a few threads on exhausts and NA's and some people say that NA's need some backpressure so it's better to go for a catback system with an extra muffler before the backbox and thiner piping. Is that correct? I've been looking at this HKS 409 one on fleabay, is it any good? http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=290189697700&ssPageName=STRK:MEWA:IT&ih=019 Cheers Link to comment Share on other sites More sharing options...
CarlT67 Posted February 19, 2008 Share Posted February 19, 2008 I dont think the Hi Power 409 is a stainless steel, so it would be more affected by rust etc.. So would not last as long as a slightly more expensive stainless. As for the back pressure theorem there are a few different views, some people believe that less exhaust restriction will release the pony's, and others believe that the lack on back pressure could cause reversing of the flow of gases through the engine. Link to comment Share on other sites More sharing options...
cossack Posted February 19, 2008 Share Posted February 19, 2008 I dont think the Hi Power 409 is a stainless steel, so it would be more affected by rust etc.. So would not last as long as a slightly more expensive stainless. As for the back pressure theorem there are a few different views, some people believe that less exhaust restriction will release the pony's, and others believe that the lack on back pressure could cause reversing of the flow of gases through the engine. was thinkin of that one myself, states in the description that it is full stainless steel system! Link to comment Share on other sites More sharing options...
Paul Whiffin Posted February 19, 2008 Share Posted February 19, 2008 HKS is the one to go for definately, twin box, smaller diameter, made specifically for the NA. 409 is full stainless steel, 409 is the type of stainless its made from! They also do it in Silent Hi-power as well, more money but better quality stainless steel. Ta Link to comment Share on other sites More sharing options...
Masenko Posted February 20, 2008 Share Posted February 20, 2008 I have the HKS Silent Hi-Power, got it from Envy. Great exhaust! C~ Link to comment Share on other sites More sharing options...
Dazzi Posted February 20, 2008 Share Posted February 20, 2008 I had the nur spec r. Way too loud without the baffle in. It made everything vibrate when I got upto 88mph Link to comment Share on other sites More sharing options...
Stevo Posted February 20, 2008 Share Posted February 20, 2008 I replaced my Nur Spec R for an HKS Silent Hi Power just last month and have to say I'm over the moon with it. Still get a great noise when it counts on throttle, but the idle and low revs are nice and quiet. Also, no low droning noise when on the motorway. Go for the HKS Silent if you can - you'll not regret it. Link to comment Share on other sites More sharing options...
Multics Posted February 20, 2008 Author Share Posted February 20, 2008 Thanks for your replies guys, I think I'm gonna go for the HKS then. Link to comment Share on other sites More sharing options...
Scott Posted February 20, 2008 Share Posted February 20, 2008 I had the nur spec r. Way too loud without the baffle in. It made everything vibrate when I got upto 88mph Thats because the flux capacitor was about to do its thing Scott =op Link to comment Share on other sites More sharing options...
Nic Posted February 20, 2008 Share Posted February 20, 2008 Here's a list of exhausts specifically made for the NA Supra Blitz Realize-TT Blitz Realize-TTR HKS Hi-Power HKS Silent Hi-Power Kakimoto N1 Kakimoto R Fujitsubo Legalis R Link to comment Share on other sites More sharing options...
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