jollyranchers Posted October 31, 2010 Share Posted October 31, 2010 Already got a Japspeed K2 which im quite pleased with ,just wondering how much louder the exhaust will be by adding a Y pipe ? Dont want it stupidy loud! Quote Link to comment Share on other sites More sharing options...
Zugara Posted October 31, 2010 Share Posted October 31, 2010 Not much louder, better flow. Fit a pop charger to increase the noise level, and they are cheaper.... High flow cats? Quote Link to comment Share on other sites More sharing options...
jollyranchers Posted October 31, 2010 Author Share Posted October 31, 2010 was looking at the y pipe for the tuning/ bhp aspect to go with some other mods i have planned shortly as a matter of interest , how much louder to HFC make to the overall sound i.e berks ? Quote Link to comment Share on other sites More sharing options...
yokomo Posted October 31, 2010 Share Posted October 31, 2010 not a huge amount. i went Y back exhaust Y pipe cats it will sound better with the Y plus unless youve got pretty new Z then chances are youre Y is about on its way out any hows. Quote Link to comment Share on other sites More sharing options...
Zugara Posted October 31, 2010 Share Posted October 31, 2010 I think I am correct in saying that the stock Y pipe on 06 cars and above are as good as you get, therefore you wont notice any gains with a non oem one. Stick with the OEM and fit HFC, as to the noise levels I dont know. Would have thought though it will be louder. As I said, a pop charger will give you an increase in noise.. Quote Link to comment Share on other sites More sharing options...
Animal Posted November 1, 2010 Share Posted November 1, 2010 HFCs add, subjectively, around 10% to the volume and a bit more bark/rasp. Quote Link to comment Share on other sites More sharing options...
Wasso Posted November 1, 2010 Share Posted November 1, 2010 I think I am correct in saying that the stock Y pipe on 06 cars and above are as good as you get, therefore you wont notice any gains with a non oem one. Stick with the OEM and fit HFC, as to the noise levels I dont know.Would have thought though it will be louder. As I said, a pop charger will give you an increase in noise.. I took gains from my Motordyne XYZ pipe Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted November 1, 2010 Share Posted November 1, 2010 I think I am correct in saying that the stock Y pipe on 06 cars and above are as good as you get, therefore you wont notice any gains with a non oem one HR Y pipe is larger than a DE or Uprev car late 07 onwards , but a "good quality" Y pipe will flow lot more than any stock OEM Y pipe. Mark Quote Link to comment Share on other sites More sharing options...
Zugara Posted November 1, 2010 Share Posted November 1, 2010 I think I am correct in saying that the stock Y pipe on 06 cars and above are as good as you get, therefore you wont notice any gains with a non oem one HR Y pipe is larger than a DE or Uprev car late 07 onwards , but a "good quality" Y pipe will flow lot more than any stock OEM Y pipe. Mark Mark, Thanks for having a look at my car on Saturday... Quote Link to comment Share on other sites More sharing options...
bhavin85 Posted November 1, 2010 Share Posted November 1, 2010 I think I am correct in saying that the stock Y pipe on 06 cars and above are as good as you get, therefore you wont notice any gains with a non oem one HR Y pipe is larger than a DE or Uprev car late 07 onwards , but a "good quality" Y pipe will flow lot more than any stock OEM Y pipe. Mark Suggestion's on whats a good quality y-pipe ? Quote Link to comment Share on other sites More sharing options...
Neilp Posted November 2, 2010 Share Posted November 2, 2010 I've got the nismo y-pipe. Slightly changed exhaust volume to a little bit louder but not much real change. Biggest improvement was decats Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted November 2, 2010 Share Posted November 2, 2010 We use Motordyne stuff XYZ Y pipe , as we can run a single race cat further back in the exhaust system so helping breathing and still staying 100% MOT legal when used with full de-cats. Quote Link to comment Share on other sites More sharing options...
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