silvershark44 Posted November 5, 2006 Share Posted November 5, 2006 Very strange question, but im interested in going BPU, but I really want to keep the stock look of the car so would be keeping the standard exhaust. If I have to double decat, is this going to make the exhaust really loud and droney? Dont get me wrong I do like that sort of thing normally, but for my car I want to remain very discrete. I love modified supras, but im deliberately keeping a stock look just to be a little different, and plus I believe that unless oyu have a lot of cash to throw at it you shouldnt bother. So how discrete can BPU be? I dont mind noise so much on the outside of the vehicle, but I dont want to hear it droning on the motorway. Quote Link to comment Share on other sites More sharing options...
Pig Posted November 5, 2006 Share Posted November 5, 2006 The stock exhaust will still be quiet. Dont think you will get the full benefit of BPU with a stock exhaust though Quote Link to comment Share on other sites More sharing options...
silvershark44 Posted November 5, 2006 Author Share Posted November 5, 2006 Yeah thats my fear, its probably not a good idea to go BPU now winter is approaching anyway. I think I really need to sit in a BPU supra at a meet sometime to hear what it sounds like. Quote Link to comment Share on other sites More sharing options...
Rich Posted November 5, 2006 Share Posted November 5, 2006 Very strange question, but im interested in going BPU, but I really want to keep the stock look of the car so would be keeping the standard exhaust. If I have to double decat, is this going to make the exhaust really loud and droney? Dont get me wrong I do like that sort of thing normally, but for my car I want to remain very discrete. I love modified supras, but im deliberately keeping a stock look just to be a little different, and plus I believe that unless oyu have a lot of cash to throw at it you shouldnt bother. So how discrete can BPU be? I dont mind noise so much on the outside of the vehicle, but I dont want to hear it droning on the motorway. might be worth getting a HKS silent exhaust to get the full benefit of BPU,dont know how loud these are though + you would lose the "stock look" Quote Link to comment Share on other sites More sharing options...
silvershark44 Posted November 5, 2006 Author Share Posted November 5, 2006 Ive heard that HKS Silent Exhaust is far from silent though?? Isnt the name supposed to be a bit ironic? Quote Link to comment Share on other sites More sharing options...
Pig Posted November 5, 2006 Share Posted November 5, 2006 You can up the boost through a stock exhaust system and it will not be loud, infact, it will still be silent! BPU is great, but as you say, it may be better to wait till summer! Quote Link to comment Share on other sites More sharing options...
Ian R Posted November 5, 2006 Share Posted November 5, 2006 You can up the boost through a stock exhaust system and it will not be loud, infact, it will still be silent! BPU is great, but as you say, it may be better to wait till summer! Says Pig with the boostlogic megaphone zorst Quote Link to comment Share on other sites More sharing options...
silvershark44 Posted November 5, 2006 Author Share Posted November 5, 2006 Yeah thats sounds ok, would like to know what figures i would be getting at the fly though? I was bang on 300bhp at the fly with a shagged intercooler and fueling way way out. Quote Link to comment Share on other sites More sharing options...
Mas Posted November 5, 2006 Share Posted November 5, 2006 HKS exhausts are farely quite , the HKS silent is what you want as its the quitest after market exhaust you could get. Quote Link to comment Share on other sites More sharing options...
silvershark44 Posted November 5, 2006 Author Share Posted November 5, 2006 ok cool, cheers all Quote Link to comment Share on other sites More sharing options...
Angarak Posted November 5, 2006 Share Posted November 5, 2006 I've recently fitted a HKS Superdrager (mk 1) and Im BPU, its quieter than my previous HKS Hypermax exhaust (both mild steel with stainless backboxes) Think you'll only get 'scare the kids' loud when using stainless/titanium exhaust systems. Quote Link to comment Share on other sites More sharing options...
Robbo Posted November 5, 2006 Share Posted November 5, 2006 Sorry to hi jack the thread but what does BPU stand for? Quote Link to comment Share on other sites More sharing options...
Rich Posted November 5, 2006 Share Posted November 5, 2006 Sorry to hi jack the thread but what does BPU stand for? basic performance upgrade Quote Link to comment Share on other sites More sharing options...
Robbo Posted November 5, 2006 Share Posted November 5, 2006 basic performance upgrade Thanks Rich Quote Link to comment Share on other sites More sharing options...
Homer Posted November 5, 2006 Share Posted November 5, 2006 Think you'll only get 'scare the kids' loud when using stainless/titanium exhaust systems. Not true, the RSR is mild steel but extremely loud. The loudness has to do with the silencing method and number of silencers used. The HKS Silent, HKS dragger and other have a huge packed back box and secondary silence so are much quieter than those with the tiny backbox only pipes like the RSR Quote Link to comment Share on other sites More sharing options...
Angarak Posted November 5, 2006 Share Posted November 5, 2006 I stand sit corrected Quote Link to comment Share on other sites More sharing options...
egrossi Posted November 5, 2006 Share Posted November 5, 2006 hi robbo, I'm new and love the kit on your supra excuse my ignorance but what kit is that kit called. Love to add to mine when I get one very very soon. Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted November 5, 2006 Share Posted November 5, 2006 hks superdragger. Just a mild rumble. Quote Link to comment Share on other sites More sharing options...
Supra-Dupra Posted November 5, 2006 Share Posted November 5, 2006 hi robbo, I'm new and love the kit on your supra excuse my ignorance but what kit is that kit called. Love to add to mine when I get one very very soon. Yes take your kit off and show us it in detail Quote Link to comment Share on other sites More sharing options...
egrossi Posted November 6, 2006 Share Posted November 6, 2006 yeah cheers supra dupra thought pc was wrecked could'nt do anything click ok ok and on and on. ironic was in ireland the other week visiting my family. Quote Link to comment Share on other sites More sharing options...
Guest gzaerojon Posted November 6, 2006 Share Posted November 6, 2006 i have an Apexi N1 on the soop, after i went BPU it made almost no difference in sound probably a good thing now as i live near a load of pensioners with an average age of 127 they don't like prodigy i found Quote Link to comment Share on other sites More sharing options...
jot_ie Posted November 6, 2006 Share Posted November 6, 2006 I just fitted a brand new super dragger last wednesday A nice low rumble that perks up a bit when pushed Stainless back box, 5" tip with 90 mm piping. the piping is mild steel. The hks silent is in fact the hks hiper or another name the hks hi power. The silent should read "silenced", you have to run with a baffle in to achieve the quieter sound. john Quote Link to comment Share on other sites More sharing options...
Mas Posted November 6, 2006 Share Posted November 6, 2006 I have the HKS Titanium and I love the sound of it. not too loud not too quite;) Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted November 6, 2006 Share Posted November 6, 2006 Dont think about going BPU without a free flowing exhaust, your just asking for trouble imo....its far to restrictive and the heat build up will be immense! as others have said, if I rememer rightly, mongoose, tanabe and the HKS are your best bet for a quiter exhaust, also leave the baffle in for more silencing Quote Link to comment Share on other sites More sharing options...
Class One Posted November 6, 2006 Share Posted November 6, 2006 I have a 4" stainless Trial exhaust with 3" double decats, and it's not too loud at all (inside the car ) Quote Link to comment Share on other sites More sharing options...
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