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      12-09-2012, 03:10 PM   #36
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Drives: 2011 M3 E93
Join Date: Dec 2012
Location: Colorado

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Originally Posted by Hawker30 View Post
Originally Posted by DaveDee
That would be great. I just signed up for the forum today and they said I would need 3 posts and 48hrs before I have full access to the site. Sorry for the mishap, any info would be fantastic. I cant seem to get back to my question, if you would like to post it for others that may be interested that would be great.
No trouble at all here is the reply:
I think the Gintani Sport valve system would suit you best, it will really cut back on the drone. The fuel smell is due to the system being full catless. When you had the engine remapped for the SC did they eliminate the cold start cycle? This will make a huge difference to the smell as the idea with the cold start cycle is to preheat the cats, so if you are catless there is extra fuel being poured into the exhaust for no reason. You are correct about the stock xpipe. it will quieten down the system quite some but may not eliminate drone, (this is more the function of the rear silencers) the valves will do that best. Downside to the stock X-pipe is the loss of about 25-28 HP and you will very quickly burn out the cats due to the increase in temperature and gas flow with the SC. This is on advice from our performance shop here, I'm told SC's eat cats for breakfast then spits them out ;-) You can get HFC's for the Gintani and they are quieter but I'm not sure about life compared to the resonated pipes (which I think are the best)

Whilst I am the Australian Distributor for Gintani, and am really happy to help where possible, I suggest you call Nick at Gintani (CA) who is an expert in this area. If you came from stock your exhaust may not get the WAF for now, it's only a matter of time to adjust ... remember an exhaust system to guys is what shoes are to women
I think we would all be jealous of hearing that magnificent sound when you peel the roof down

This info is awesome, thanks DaveDee. I can't wait to get the valves and a re-tune to eliminate the cold start. Much appreciated.