DIY_EFI Digest Sunday, October 17 1999 Volume 04 : Number 586 In this issue: Re: DIY_EFI Digest V4 #584 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Sat, 16 Oct 1999 23:39:47 -0400 From: "Gary Derian" Subject: Re: DIY_EFI Digest V4 #584 I haven't seen it but I've heard about it. It seems to me to be similar to what Greg H described in having an expansion chamber to fool the exhaust into thinking it has reached the end of the pipe. Also the megaphones cause pressure waves to be reflected back to the engine over a larger rpm range. 4 stroke motorcycles have used megaphones. The design is not quite like a 2 stroke pipe, though. I don't think a 2 stroke style will work on a 4 stroke. Gary Derian > > > > Has anyine seen any four strokes other then the Mercedes v-6 sedan car using > > an expansion chamber (s), like a 2 stroke. > > Any thoughts on why this might really be worthwhile, or just a cosmetic > > gimmick. Would have thought other teams would be working with it by now if > > it made a hill of beans difference... > > > it may allow for a more radical ex cam pattern without any torque loss > > Clive ------------------------------ End of DIY_EFI Digest V4 #586 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".