supraspeed Posted May 9, 2009 Share Posted May 9, 2009 Ok i was just wondering if its possible to go bpu (full decat) but maintain a respectable noise level. its just my now sold N/A is a full decat and some very loud exhaust and its just stupid noise levels. i was wondering if theres a happy medium, as i am soon moving into a quiet area and my next supe can't be really loud even though i want bpu. any ideas advice? Quote Link to comment Share on other sites More sharing options...
patrikbrunt Posted May 9, 2009 Share Posted May 9, 2009 do you mean BPU on a TT? if so then my decatted TT with superdragger is far far far quieter than my old NA with just a cat-back... Quote Link to comment Share on other sites More sharing options...
bigbloodyturbo Posted May 9, 2009 Share Posted May 9, 2009 My blitz nurspec with no cats isn't that loud, especially when its warmed up as the idle drops to 600. If you get an exhaust with a baffle that should help if you've got fickle neighbours. Your TT should be quieter than your na anyway as the turbo's act like mufflers and deaden some of the noise. Quote Link to comment Share on other sites More sharing options...
AndyT Posted May 9, 2009 Share Posted May 9, 2009 Super Dragger or Tanabe Touring Medallion would be your quietest options. Nur Spec RX gets a thumbs up from members too. There is a group buy on the Tanabe at the moment. Quote Link to comment Share on other sites More sharing options...
Marmoot Posted May 9, 2009 Share Posted May 9, 2009 do you mean BPU on a TT? if so then my decatted TT with superdragger is far far far quieter than my old NA with just a cat-back... I'm with him. My TT has this straight (and I mean "straight"!) steel pipe from downpipe to the muffler at the back when I bought it. It's still quieter than my N/A. Please correct me if I'm wrong, but turbo cars are generally quieter as the turbos act as dampers? Btw, is it true not having cat/resonator/etc may cause dangerous boost creep? I'm a bit worried Quote Link to comment Share on other sites More sharing options...
Terminator Posted May 9, 2009 Share Posted May 9, 2009 A TT with no cats will suffer boost creep, you need a restrictor ring, or you will see 1.5 bar if you are unlucky. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 9, 2009 Share Posted May 9, 2009 Stay away from the 5zigen fireball if you don't like noise. Quote Link to comment Share on other sites More sharing options...
supraspeed Posted May 9, 2009 Author Share Posted May 9, 2009 cheers people! my N/A was running a single turbo, then had it taken off, full decat already in place but it was much louder, turbo was used as a muffler in one sense. i'm looking at a few tt's now ive sold my N/A this morning but wanted a bpu setup on next car. i just didn't know if you could have a quieter system whilst running bpu but still keeping the power levels high. Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted May 9, 2009 Share Posted May 9, 2009 funnily i have the nur spec-r thats supposed to be the loudest, full decat, and my car isnt loud at all compared to other sup's. when you give it the beans it sounds awesome without making you partially deaf. Quote Link to comment Share on other sites More sharing options...
AndrewOW Posted May 9, 2009 Share Posted May 9, 2009 funnily i have the nur spec-r thats supposed to be the loudest, full decat, and my car isnt loud at all compared to other sup's. when you give it the beans it sounds awesome without making you partially deaf. I have that exhaust too, and it's by far one of the nicest sounding exhausts on a TT. IMO, of course Quote Link to comment Share on other sites More sharing options...
Terminator Posted May 9, 2009 Share Posted May 9, 2009 You could go for one of the systems mentioned, then get an additional silencer cut into the pipe. Burns in the states do silencers that are only 20 -25mm larger in diameter than the pipe they replace. With a 2.5 or 3 inch system you would have plenty of room under the car to accommodate another small silencer. I have several silencers and a 4" system under the car. Quote Link to comment Share on other sites More sharing options...
Marmoot Posted May 10, 2009 Share Posted May 10, 2009 A TT with no cats will suffer boost creep, you need a restrictor ring, or you will see 1.5 bar if you are unlucky. yeah, might be putting a resonator next week just to quieten it a bit even more and to prevent boost creep. But anyhow, 1.5 bar would be awesome, wouldn't it? Quote Link to comment Share on other sites More sharing options...
cadman 26 Posted May 10, 2009 Share Posted May 10, 2009 But anyhow, 1.5 bar would be awesome, wouldn't it? not on standard tubbies. Only a matter of time before Quote Link to comment Share on other sites More sharing options...
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