DIY_EFI Digest Friday, November 19 1999 Volume 04 : Number 650 In this issue: Spark retard for EEC-V (DIS) flowbench See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Fri, 19 Nov 1999 07:41:14 -0500 From: "Posea, David G, SITS" Subject: Spark retard for EEC-V (DIS) has anyone thought about building a programmable retard unit for a DIS ignition. Hopefully one with boost retard built in. I've started developing some PIC code, but I'm not an electronics type. There seems to be two ways to go. One is to intercept the crank trigger. It has 35 teeth and one missing one, for a pulse every 10 degrees. That makes writing the retard code a little tricky, as more than 10 degrees of retard would span pulses. The other way is to use the coil triggers as inputs. I'm not sure if 4 identical chips should be used, or if one chip should process all inputs. Does anyone have any ideas on which way I should go. I'm a programmer by trade, and the PIC assembly language is pretty easy to work with. Any help you can offer will be greatly appreciated. David Posea ------------------------------ Date: Fri, 19 Nov 1999 11:53:09 -0600 From: steve ravet Subject: flowbench Off the top of my head, you'd need a driver circuit for each injector, and you'd have to modify the software (if you used it) to drive more than one at a time. I think it used the parallel port to control the driver circuit. - --steve > Date: Thu, 18 Nov 1999 13:54:27 -0700 > From: Andrew Hunter > Subject: Fuel Injector Flowbench > > For those of you in the know, would it be possible to run muliple injectors > on the Perfomance Engineering Flowbench? > > Thanks, > Andrew > - --steve - -- Steve Ravet steve.ravet@xxx.com Advanced Risc Machines, Inc. www.arm.com ------------------------------ End of DIY_EFI Digest V4 #650 ***************************** 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".