stillracing Posted November 20, 2011 Share Posted November 20, 2011 Afternoon chaps. Have been meaning to make a first post after having a 350 for quite a while now...This seems as good a reason as any! Follow the link to see what I'm on about. Essentially my exhaust setup includes the standard system, and a side exit. I bought another mid pipe to modify and have an electronic valve installed which is able to open or close flow to the side exit. The side exit joins the mid pipe in front of the mid silencer, so it's only cats giving restriction/noise suppression. The video is with standard cats, but I have since fitted Berk HFC's. The noise is as you might expect. Measured volume the other day and was 121dB at a distance of 1metre I've got a few other interesting things to contribute in the near future, forgive any geeky stuff as I'm a motorsport designer/vehicle dynamicist lol. Rob Quote Link to comment Share on other sites More sharing options...
DoogyRev Posted November 20, 2011 Share Posted November 20, 2011 Welcome Along Side exhaust look's interesting BTW...... you passenger laughs like a girl Quote Link to comment Share on other sites More sharing options...
spursmaddave Posted November 20, 2011 Share Posted November 20, 2011 Sounds a bit hardcore for me I await your next post, due around August 2013 Quote Link to comment Share on other sites More sharing options...
Lexx Posted November 20, 2011 Share Posted November 20, 2011 I had electric cut-outs fitted to my HSV. Perfect set-up for a V8 Never been a fan of a mostly unsilenced V6 though. Just doesnt do it for me. Kudos for being different. Quote Link to comment Share on other sites More sharing options...
chrisgunton Posted November 20, 2011 Share Posted November 20, 2011 You must be local to me, as that tunnel is on the A20 leaving Folkstone It's currently a 30mph limit through there while they repair the bridge joins Would love to see this in person sometime! Quote Link to comment Share on other sites More sharing options...
Zugara Posted November 20, 2011 Share Posted November 20, 2011 Quote Link to comment Share on other sites More sharing options...
Ian Posted November 20, 2011 Share Posted November 20, 2011 Side exit was my next step if I had kept the Z Would have just had one large exit through each wing Quote Link to comment Share on other sites More sharing options...
ChrisS Posted November 20, 2011 Share Posted November 20, 2011 Welcome Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted November 20, 2011 Share Posted November 20, 2011 Hi and welcome to the forum Quote Link to comment Share on other sites More sharing options...
Keyser Posted November 20, 2011 Share Posted November 20, 2011 Hello and Welcome Quote Link to comment Share on other sites More sharing options...
taffyjason Posted November 20, 2011 Share Posted November 20, 2011 where did you get your HFC's from? Quote Link to comment Share on other sites More sharing options...
Lexx Posted November 20, 2011 Share Posted November 20, 2011 where did you get your HFC's from? Quote Link to comment Share on other sites More sharing options...
neo Posted November 21, 2011 Share Posted November 21, 2011 have embedded the youtube clip in the first post Quote Link to comment Share on other sites More sharing options...
M13KYF Posted November 21, 2011 Share Posted November 21, 2011 sound a bit like a broken exhaust to me, everyone has there own taste though Quote Link to comment Share on other sites More sharing options...
rtbiscuit Posted November 21, 2011 Share Posted November 21, 2011 it has a terrible resonance reverb on lift off as you can hear the sound waves hitting each other. might help if you tune your pipes. they either need extending slightly or you need a resonance chamber adding to help smooth out the noise. Quote Link to comment Share on other sites More sharing options...
stillracing Posted November 21, 2011 Author Share Posted November 21, 2011 Yeah I guess the side exit is causing the resonance although I can't really see why as the valve is right in the side of the mid-pipe so the volume is almost identical (when the valve is shut). Presumably standard exhaust setups don't have that resonance, but I can't remember! It isn't ideal as you say. As for the noise I would have liked a well balanced exhaust system, but I don't really think the VQ35DE is well tuned enough to make a nice noise anyway (not compared to, say an NSX ). Either way having it switch-able is pretty handy. Yes HFC's were from Tarmac. Nice items and 3kg lighter each than standard Meant to say that the side exit gave a minor gain in torque and therefore power; up ~10Nm and ~5bhp on peaks at the engine (albeit measured on a rolling road). Quote Link to comment Share on other sites More sharing options...
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