nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 (edited) I have done the rounds on exhaust systems over the past couple of years and after a lot of failed sound tests,back pressure problems,poor build quality and power loss I have got the best combination that suits my car. De cats and a full Miltek system including Y pipe. On full boost yesterday at Castle Combe it was the system for the more mature Zedder!! Lol Do you get much rasp from your system Andy Is it resonated? I can't decide which way to go don't want to throw a grand at a system to find out its no different I'm wondering if some resonated test puppies will sort it Ill put a video up later so you can see what the problem is Edited May 13, 2015 by nissanman312 Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted May 13, 2015 Share Posted May 13, 2015 Ya get a vid up nick ......... Then I can tell you if mines more raspy than yours!! Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 Yeah ill do it tonight shame as it's got a awesome low burble at low revs that turns into a horrible rattle lol Quote Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted May 13, 2015 Share Posted May 13, 2015 I really don't get it, how can something rattle unless is not properly bolted? Nothing inside the Invidia test pipes to make it rattle. Are they touching the body when vibrating? Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted May 13, 2015 Share Posted May 13, 2015 Exactly the same as mine ! Ordered the art pipes , as I've read and been told this gets rid of a lot if the rasp. 1 Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted May 13, 2015 Share Posted May 13, 2015 Mines is not touching anything 100% , at 2 k revs it rasps so bad it sounds like a rattle! Quote Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted May 13, 2015 Share Posted May 13, 2015 So it's not rattling, it's rasp sound! Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted May 13, 2015 Share Posted May 13, 2015 Yes , one that's so loud it sounds like a rattle Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 Problem here is we don't know our rasp from our rattle lol Quote Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted May 13, 2015 Share Posted May 13, 2015 You can say that again!!! :lol: Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 We don't know our rattle from our rasp lol Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 Little video coming up I've just been for a little drive lol It sounds like a wild screaming banshi on wot great for now but don't know if I can be doing with it long term lol Quote Link to comment Share on other sites More sharing options...
Bodyboarder81 Posted May 13, 2015 Share Posted May 13, 2015 ........ Waiting Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 There's a couple in my photo bucket ones a cold start But basically the raspy rattle at about 4 thousand is there a lot on below 60mph cruise Quote Link to comment Share on other sites More sharing options...
GMballistic Posted May 13, 2015 Share Posted May 13, 2015 There's a couple in my photo bucket ones a cold start But basically the raspy rattle at about 4 thousand is there a lot on below 60mph cruise Does sound rattly doesn't it. No help I know (sorry) but can imagine that's a bit annoying. Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 13, 2015 Author Share Posted May 13, 2015 Yeah just a bit It was fine before decat but I don't think it's the decats rather that the decats have brought out a not nice side of the cobra Oh yeah and the blower lol Perhaps its just good for na cars as it was nice before Quote Link to comment Share on other sites More sharing options...
sipar69 Posted May 14, 2015 Share Posted May 14, 2015 Yep. Definitely sounds like rasp rather than a vibration due to a fitment. I get something a bit similar but it's very I infrequent and much less noisy. Quote Link to comment Share on other sites More sharing options...
Grundy Posted May 14, 2015 Share Posted May 14, 2015 That noise is likely to be a heat shield, if not somethings not mounted correctly, loose nut etc...as that rattle isn't the exhaust note, it's metal rattling about. Quote Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted May 14, 2015 Share Posted May 14, 2015 Nic, although I'm happy to get an Invidia Gemini exhaust for you, before you spend anymore money, try the following: - check fitment issues - vibration under load makes the pipes touch body parts under the car, check heat shields, usually the bolts on them snap very easily. - if that doesn't solve it, try welding brackets on the Invidia test pipes and fit the OEM cats brace on them, that should eliminate the rasp. Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 14, 2015 Author Share Posted May 14, 2015 That noise is likely to be a heat shield, if not somethings not mounted correctly, loose nut etc...as that rattle isn't the exhaust note, it's metal rattling about. Yeah I think your right I'm wondering if the baffles have possibly broke up in the back box if nothing is touching the body which I'll check the weekend It did it when the car was na but only when cold for the first 2/3 minutes of running then was fine Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 14, 2015 Author Share Posted May 14, 2015 Nic, although I'm happy to get an Invidia Gemini exhaust for you, before you spend anymore money, try the following: - check fitment issues - vibration under load makes the pipes touch body parts under the car, check heat shields, usually the bolts on them snap very easily. - if that doesn't solve it, try welding brackets on the Invidia test pipes and fit the OEM cats brace on them, that should eliminate the rasp. Brace? Quote Link to comment Share on other sites More sharing options...
Adrian@TORQEN Posted May 14, 2015 Share Posted May 14, 2015 Yes, brace 1 Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted May 14, 2015 Author Share Posted May 14, 2015 Yes, brace Ah yeah I see What shall I do then I got a place near me that fabs stainless exhaust get them to weld somthing across? Quote Link to comment Share on other sites More sharing options...
Grundy Posted May 14, 2015 Share Posted May 14, 2015 Get the car up on ramps, Rev the car, and work out exactly where the sound is coming from. No point spending money until you know what the issue is. Quote Link to comment Share on other sites More sharing options...
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