dr_blackman Posted August 4, 2007 Share Posted August 4, 2007 What exhausts are marketed for the na then nic? Think ill still go blitz rx though Quote Link to comment Share on other sites More sharing options...
Nic Posted August 4, 2007 Share Posted August 4, 2007 What exhausts are marketed for the na then nic? Think ill still go blitz rx though Blitz do the Realize-TT and Realize-TTR specifically for the NA Supra. They do not say what the Db level is though. http://www.blitz.co.jp/products/ex.system/realizeTT/realizeTT.htm HKS do a version of the Silent Hi-Power specifically for the NA, this is rated as 99Db. http://www.hks-power.co.jp/products/exhaust/muffler/silent/silent.html I can't find any other models specifically designed for the NA. Quote Link to comment Share on other sites More sharing options...
markrzs Posted August 4, 2007 Share Posted August 4, 2007 Sounds really nice Ben, does it look the same as the Nur Sper R as I have one of these ? Are you pleased with all the work done on your Supra now ? Quote Link to comment Share on other sites More sharing options...
tucky40 Posted August 4, 2007 Author Share Posted August 4, 2007 Yeah mark its identical to the nur spec R and still has the engraving on the tail pipe. Difference being the noise level at idle and low revs and the fact it sits much closer to the underside of the car. As for you private pile........zip it or you wont be invited around for tea and biscuits ever again. Expecially when your supra has a new ´louder exhaust´. My neighbours will be dilighted!!! Quote Link to comment Share on other sites More sharing options...
SupraPL Posted August 4, 2007 Share Posted August 4, 2007 What exhausts are marketed for the na then nic? Think ill still go blitz rx though Yep, me to. The Blitz Nur Spec RZ is designed mainly for the TT Supra, the 91Db is the level it will be on a stock TT with cats in place. The turbos quieten the exhaust note quite a bit, so the same exhaust on an NA will be a fair bit louder, even more so if you have removed the cats. How much louder exactly it will be I don't know, I'd guess it will be similar to the NA version of HKS Silent Hi Power at 99Db. What can you say about Blitz Nur Spec RX fitted to N/A-T? Will be much louder than fitted to fully de-catted TT (tucky40's Supra)? Quote Link to comment Share on other sites More sharing options...
Martin Posted August 4, 2007 Share Posted August 4, 2007 I think it's going to be the Blitz for me. If it's going to have the same noise levels as the HKS for the time it's going to be N/A I can cope with that. It will work great if I convert it to tt in the near future. My car's going to be along term project...All I need is to win some money now...! Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 10, 2008 Share Posted May 10, 2008 Sorry to bring this back from the dead (hey, im using the search button) how is this exhaust quieter? I had a nur spec r and it was very loud without the baffle. When I had the baffle in it was ok. Does the RX have a baffle built in or does the pipework get narrower towards the backbox? A pic up the exhaust pipe would answer this! Cheers Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 12, 2008 Share Posted May 12, 2008 Wheres the cheapest place to buy one? Quote Link to comment Share on other sites More sharing options...
Guest mattsupra Posted May 12, 2008 Share Posted May 12, 2008 ive got a blitz nur spec and it rattles on choke has it got a kind of baffle in it as there is a bolt holding something in place at the back of it? matt Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 12, 2008 Share Posted May 12, 2008 Thats the spec R Quote Link to comment Share on other sites More sharing options...
Guest mattsupra Posted May 12, 2008 Share Posted May 12, 2008 so has it got a baffle in it or not? lol it makes a racket when its on choke and sometimes when driving too does it need a tighten up or is this just the way of the specR? Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 13, 2008 Share Posted May 13, 2008 so has it got a baffle in it or not? lol it makes a racket when its on choke and sometimes when driving too does it need a tighten up or is this just the way of the specR? The RX hasn't got a baffle but the R has. Sounds like your exhaust has 'broken in'. You either need to tighten the bolt up a bit more or remove the baffle to stop the rattle Quote Link to comment Share on other sites More sharing options...
Shilakadaddy Posted May 13, 2008 Share Posted May 13, 2008 Got mine from Terry S too, he was cheaper than anyone else. I've attached a couple of pictures looking up the pipe... Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 13, 2008 Share Posted May 13, 2008 Thats great mate Is it a welded in baffle? or just narrower pipe work? Quote Link to comment Share on other sites More sharing options...
tucky40 Posted May 13, 2008 Author Share Posted May 13, 2008 The pipe work is 3'' so it does just seem to be a narrowing at the back box. I can only assume its a welded baffle. Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 13, 2008 Share Posted May 13, 2008 Usually running a baffle causes back pressure for TT's and reduces boost. Have you noticed that at all? Quote Link to comment Share on other sites More sharing options...
tucky40 Posted May 13, 2008 Author Share Posted May 13, 2008 Definately needed to increase duty on my avcr to maintain the boost after the previous 'loud' exhaust was removed and this one fitted. Just had an egt sensor fitted to my aem so when i get the car fine tunned by Ryan we will be able to see what the egts are doing and react accordingly. Quote Link to comment Share on other sites More sharing options...
Golfpro Posted May 13, 2008 Share Posted May 13, 2008 I have a Nur Spec RX ehaust fitted to my car. With my setup (T60 single, cast manifold, RMM decat front pipe) it is pretty throaty. At idle it burbles nicely, accelerating it roars like a V8 but as soon as you ease off or reach cruising speed it is nice and quiet. So the best of both worlds. Quote Link to comment Share on other sites More sharing options...
meph137 Posted May 14, 2008 Share Posted May 14, 2008 How large is the standard supe exhaust tailpipe? Just looking, sounds very nice and doesnt look too big at the back (I *hate* huge tailpipes), but I dunno how big the normal supe one is, as I dont even own a supe. I dont even know why I'm here Quote Link to comment Share on other sites More sharing options...
bolarbag Posted May 14, 2008 Share Posted May 14, 2008 I dont even know why I'm here lol, I dont see the big deal with this exhaust, as usual its a piece of pipe, with a very restrictive resonator box, this will zap power from a single turbo car and will reduce power slightly on a tt, A pipe is only as big as its smallest diameter, characteristics vary from where in the pipe the restriction is, but this will probably give the same power output of a stock tt exhaust with no cats Nice bit of bling but its a disappointment really, I thought it would have reduced noise some other magical new way Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 14, 2008 Share Posted May 14, 2008 lol, I dont see the big deal with this exhaust, as usual its a piece of pipe, with a very restrictive resonator box, this will zap power from a single turbo car and will reduce power slightly on a tt, A pipe is only as big as its smallest diameter, characteristics vary from where in the pipe the restriction is, but this will probably give the same power output of a stock tt exhaust with no cats Nice bit of bling but its a disappointment really, I thought it would have reduced noise some other magical new way Thanks for that. I want to stay clear on backpressure as the spec r baffle robbed me of power (yes, from a na!) but I also don't want loud noise so I thought the spec rx would be great but seeing as it has a built in baffle I don't really see the point in it. Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 15, 2008 Share Posted May 15, 2008 Does anybody have a sound clip of this exhaust on an na? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted May 15, 2008 Share Posted May 15, 2008 There are mixed arguments on that but from what I understand, you are right, you want to stay away frrom having too much back pressure, I think the optimum N/A size exhaust is 2.75inch, someone will confirm, but reading this The reason why the engine is burning lean to begin with is that the reduction in backpressure is causing more air to be drawn into the combustion chamber than before. Earlier cars (and motorcycles) with carburetion often could not adjust because of the way that backpressure caused air to flow backwards through the carburetor after the air already got loaded down with fuel, and caused the air to receive a second load of fuel. While a bad design, it was nonetheless used in a lot of vehicles. Once these vehicles received performance mods that reduced backpressure, they no longer had that double-loading effect, and then tended to burn valves because of the resulting over-lean condition. This, incidentally, also provides a basis for the "torque increase" seen if backpressure is maintained. As the fuel/air mixture becomes leaner, the resultant combustion will produce progressively less and less of the force needed to produce torque. So as long as your car can correctly adjust fueling your exhaust can be as non-restrictive as you like, as the stock ecu usually runs very rich at top end(running open loop) you may actually benefit from having a bigger diameter pipe as this could create a more lean better condition Quote Link to comment Share on other sites More sharing options...
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