Turbo_Knuff Posted February 11, 2009 Share Posted February 11, 2009 Hello I´m searching for a new catback system for my r33 gts25t spec 2. But I don´t know whats best of 3 and 4 inch systems ? How much power can the 3 inch system handle ? I hope you understand me hehe. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/ Share on other sites More sharing options...
R31Nismoid Posted February 11, 2009 Share Posted February 11, 2009 If your under 300rwkw - 3" Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421212 Share on other sites More sharing options...
Keeper Posted February 11, 2009 Share Posted February 11, 2009 i dont know what ur planning, but my 4" system was best for getting me pulled over and defected Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421229 Share on other sites More sharing options...
Turbo_Knuff Posted February 11, 2009 Author Share Posted February 11, 2009 (edited) Hmm I don´t realy know what to do with the car in future, Maybe I should buy a 3 inch system and if I go over 300rwkw buy a 4 inch ? I have looked on this system http://www.japspeed.co.uk/Nissan-Skyline-R...tem/p-21-1-280/ What do you guys think of that ? And I have looked to this one to http://askas3046.dedic35.kontrollpanelen.s...kr&Visn=Std The text says 4””two piece sportexhaust (3,5" at the first flange)Catback system. Endpipe dia. 4.5” Flanges in steel and pipes made in high quality (SUS304) stainless steel. The price of them is about the same. I want the car to sound mad and angry. I also have an apexi intake on it. Edited February 11, 2009 by Turbo_Knuff Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421255 Share on other sites More sharing options...
NYTSKY Posted February 11, 2009 Share Posted February 11, 2009 3inch is all you will need mate. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421272 Share on other sites More sharing options...
Taso84 Posted February 11, 2009 Share Posted February 11, 2009 I'm looking to get rid of my 3" exhaust pretty soon, sounds pretty tough however 2 tuff (loud) for my liking. If ur in Melb I can show you how it sounds so u can judge for urself Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421345 Share on other sites More sharing options...
Turbo_Knuff Posted February 11, 2009 Author Share Posted February 11, 2009 (edited) Thanks for the offer but Im from Sweden Maybe toy have a video ? Edited February 11, 2009 by Turbo_Knuff Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4421347 Share on other sites More sharing options...
08r3308 Posted February 12, 2009 Share Posted February 12, 2009 3"will flow plenty and if done right be quiet Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4422422 Share on other sites More sharing options...
BAMR33 Posted February 12, 2009 Share Posted February 12, 2009 Hmm I don´t realy know what to do with the car in future, Maybe I should buy a 3 inch system and if I go over 300rwkw buy a 4 inch ? I have looked on this system http://www.japspeed.co.uk/Nissan-Skyline-R...tem/p-21-1-280/ What do you guys think of that ? And I have looked to this one to http://askas3046.dedic35.kontrollpanelen.s...kr&Visn=Std The text says 4””two piece sportexhaust (3,5" at the first flange)Catback system. Endpipe dia. 4.5” Flanges in steel and pipes made in high quality (SUS304) stainless steel. The price of them is about the same. I want the car to sound mad and angry. I also have an apexi intake on it. 4.5"?!?! are talking about an exhaust for your car or a drain pipe for your house... Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423251 Share on other sites More sharing options...
TiTAN Posted February 12, 2009 Share Posted February 12, 2009 4.5" tip. if you get the 4" expect to have your neighbors vandalise your car as you will have every window in their house rattling every time you drive down the street. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423336 Share on other sites More sharing options...
R31Nismoid Posted February 12, 2009 Share Posted February 12, 2009 rubbish. I have a 3.5" system, it sits on the border virtually of legal. Its all in the mufflers Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423347 Share on other sites More sharing options...
mitchy_ Posted February 12, 2009 Share Posted February 12, 2009 i had a system on my 33 that went 3", 3.5", 4" then a 4.5" tip and it was legal. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423350 Share on other sites More sharing options...
R31Nismoid Posted February 12, 2009 Share Posted February 12, 2009 Depends on the state - that would almost certainly struggle here unless it was a two big muffler setup? Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423352 Share on other sites More sharing options...
mitchy_ Posted February 12, 2009 Share Posted February 12, 2009 it had a largish middle muffler, and a 4" inlet, 4.5" tip cannon on it, it was also very straight too (no gay angle mounted cannon), when the car got rear ended, the exhaust still stuck out due to no bends to kink on... it was a few years ago when it was tested, but i think they tested it at 4,500rpm, and it passed. it did get a bit louder higher up, but normal driving wasn't loud and droning at all. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423363 Share on other sites More sharing options...
R31Nismoid Posted February 12, 2009 Share Posted February 12, 2009 just one middle muffler... fail in vic Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423387 Share on other sites More sharing options...
mitchy_ Posted February 12, 2009 Share Posted February 12, 2009 i think i need a pair of mufflers on the 31.. picked it up today and it's rather loud.. 3" system with a fair few bends and cannon only. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423388 Share on other sites More sharing options...
R31Nismoid Posted February 12, 2009 Share Posted February 12, 2009 motor doesn't change it much other than a lower test point. i have a RB26 , slightly deeper and measured @ 5200rpm which is 400-500rpm more than a RB25, and lesser again for RB20/RB30 here in vic Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423400 Share on other sites More sharing options...
TiTAN Posted February 13, 2009 Share Posted February 13, 2009 my point ash was that he isn't going to get an off the shelf ~90db 4" system. Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423895 Share on other sites More sharing options...
R31Nismoid Posted February 13, 2009 Share Posted February 13, 2009 Some of the jap ones are actually very very quiet. Im unsure of the brands however. Ive heard some that are only marginally louder than my custom one... being the only option for me is custom. So you can certainly get some quiet ones, the two muffler setup ones Link to comment https://www.sau.com.au/forums/topic/256650-3-or-4-exhaust-on-r33-gts25t/#findComment-4423981 Share on other sites More sharing options...
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