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10-03-2012, 08:51 PM | #23 | ||
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[QUOTE=DaveDee]
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10-04-2012, 08:28 AM | #24 | |
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[QUOTE=Nicname;12783382]
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Good choice, you will be very happy, |
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12-08-2012, 12:53 PM | #25 | |
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[QUOTE=DaveDee;12779761]
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12-08-2012, 01:56 PM | #26 | |
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[QUOTE=Hawker30;13124071]
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From my basic understanding of exhaust systems a large diameter exhaust such as this has a huge volumetric space and at low RPM the exhaust gases don't accelerate from the system like they do at high RPM. Turbulence in the system from slow moving exhaust gas causes drone, and by adding the valves back pressure is increased so the exhaust gases escape at a higher velocity, hence no drone and a higher pitch. At full throttle it's hard to pick the difference between valves open and closed, valves being designed more for low RPM round town driving and elimination as much as possible as drone. I would not be without the valves, they give an amazing result...like having the best of two systems |
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12-08-2012, 03:26 PM | #27 |
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Did you end up taking the xpipe out? I have the same set up with the exact same issues. I would be curious to know what you did to get rid of the problem.
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12-08-2012, 03:35 PM | #28 | |
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11' E92 M3 Space Grey | DCT | ESS VT2- 625 | Gintani Race (valved) + Quad Res Catless X-Pipe | KW Sleeve's | GC Camber Plates|Arkym Diffuser | Vorsteiner VRS Lip | P3 Boost Guage | Stud Conversion PHOTO's: Click Here ESS VT2 625 PHOTOS: Click Here |
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12-08-2012, 04:22 PM | #29 | |
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Did you have the exhaust set-up before the SC? If so did you notice a difference with the levels after SC fitting? |
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12-08-2012, 04:44 PM | #30 |
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I had the sport exhaust and then added the x pipe and then added the super charger. With each step it got louder but I wouldn't ever say anything was unbearable. The obvious huge increase came when the x pipe was fitted but when I added the blower I honestly don't remember thinking to myself wow my exhaust is stupid loud now. This is my third supercharged car and each time I added a blower the exhaust note did change however not once was I unhappy with the sound.
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12-08-2012, 07:09 PM | #31 | ||
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12-08-2012, 08:49 PM | #32 | |
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[QUOTE=Hawker30;13125494]
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Thanks for that, I tried a reply to your PM but you are blocking PMs for being sent to you If you like I can post the answer here |
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12-08-2012, 09:58 PM | #33 |
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[QUOTE=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.
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12-09-2012, 02:34 AM | #35 | |
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[QUOTE=Hawker30;13126020]
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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 Cheers Dave |
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12-09-2012, 01:10 PM | #36 | ||
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12-09-2012, 01:25 PM | #37 | |
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[QUOTE=DaveDee;13126612]
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I have problems with the statement that sc eat cats and destroy them as this is totally false. Maybe you're thinking of people talkig about leaded gas on high hp applications that will destroy the cats but an sc? No way. Look at all the factory supercharged cars with no issues. |
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12-09-2012, 03:56 PM | #38 | |
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[QUOTE=m3an;13128131]
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Our fuel is different and there may be other factors I'm not aware of that could relate to local conditions affecting these vehicles. I've had HFC and full catless and found gains with a full catless system with the same X-pipe and rear section. |
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12-10-2012, 10:22 PM | #39 | ||
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12-16-2012, 06:27 AM | #40 |
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Why not try blocking the inner tips with a potato or similar. You will get the same effect as valve closed. This will be a fair test, then you can buy with confidence.
Last edited by DaveDee; 12-17-2012 at 07:39 PM.. Reason: correction |
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12-16-2012, 10:13 AM | #41 |
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