DIY_EFI Digest Wednesday, September 1 1999 Volume 04 : Number 499 In this issue: DIY-EFI%20References EFI Calibration Software for GM marine engine Re: DIY_EFI Digest V4 #498 Stepper/servo motor control.... Testing Testing See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Tue, 31 Aug 1999 08:20:04 EDT From: DWilkin984@xxx.com Subject: DIY-EFI%20References EFI Calibration Software for GM marine engine Mark, I am interested in purchasing software to calibrate, reprogram the GM ECM on a Mercury 502 engine. Can you tell me who makes the software. There is one called MEFI Cal. No one that I have talked to seems to know who makes it. Thanks in advance. Dave ------------------------------ Date: Tue, 31 Aug 1999 15:29:54 -0400 From: "Gary Derian" Subject: Re: DIY_EFI Digest V4 #498 An IR setup is more responsive. BMW Motorsport engines use individual throttle blades (except current US M3). Gary Derian > > Quick question: Why does most bikes use individual TB assemblies for > each cylinder while most cars use a single TB? I know how much pain > it is to keep the sync on a bike right, so what is the real gain? > ------------------------------ Date: Tue, 31 Aug 1999 21:27:48 -0600 From: "Michael D. Porter" Subject: Stepper/servo motor control.... A good long while ago, I mentioned that I was going to pick up a Lucas mechanical fuel injection unit, and wanted to add barometric compensation, and because of my location, I need to add this capacity. The fuel injection system has a manual adjustment for mixture richness, which I can use for adjusting for altitude. I have determined that I can do what I need with a circuit to control a stepper or servo motor from a variable resistance. What I need is a motor/circuit combination which will provide an absolute position for a given resistance. For reasons of cost, the cheapest means of input for altitude is a barometric sensor for an L-Jetronic digital fuel injection system--essentially, the input device is a sealed bellows with a strain gauge inside. Is there an existing circuit available which does not require constant microprocessor input and output? I simply need something to resolve a given resistance to a fixed position. Any ideas on this? I'd like to avoid having to provide position feedback through an encoder. Cheers. ------------------------------ Date: Wed, 01 Sep 1999 15:37:50 +1200 From: Roy Baker Subject: Testing This is a test to see that my registration worked. Hello ------------------------------ Date: Wed, 01 Sep 1999 15:57:33 +1200 From: Roy Baker Subject: Testing This is a test to see that my registration worked. Hello ------------------------------ End of DIY_EFI Digest V4 #499 ***************************** 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".