DIY_EFI Digest Saturday, November 6 1999 Volume 04 : Number 626 In this issue: electric supercharger Motronic 4.1 newbie-continued Re: calculator fi See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Fri, 05 Nov 1999 18:21:10 -0500 From: "John S. Gwynne" Subject: electric supercharger check this out.... http://www.electricsupercharger.com/www-electricsupercharger-com/Autoframe.htm looks suspicious... but who knows... :) john gwynne ------------------------------ Date: Fri, 05 Nov 1999 20:44:33 EST From: "Derek Kaznoski" Subject: Motronic 4.1 newbie-continued Thanks for the responses so far. I was able to get the car to idle by changing the position of the flapper reference along the potentiometer, effectively increasing the resistance for any given air flow. This was a bit of a rough idle with near-stalling upon initial throttle opening. I noticed that at this "pseudo-idle" the flapper was completely closed. Manually opening the flapper just a bit by moving the potentiometer arm smoothed out the idle and improved the throttle response. This was still the case after putting the flapper reference on the potentiometer back to original setting. Squeezing off the air bypass hose to the idle speed actuator had no effect on the "pseudo-idle." >From this, I assume that the idle speed actuator is not letting air in (if it were, the flapper should be a little open at idle, shouldn't it?). Thus, manually opening the flapper allowed in a little air, effectively "substituting" for the idle speed actuator. I took off the ISA and examined it. The valve seemed to open and close without difficulty. I went ahead and cleaned it with throttle body cleaner to be sure (thanks Dylan). I noticed that in the fully closed position, there was about a 3mm gap present, i.e., the valve is over-rotated past the closed position. I couldn't adjust this because the adjustment screw was frozen. I suspect that because of this maladjustment the valve doesn't completely open like it's supposed to (i.e., it's about 3mm less open than it should be at any given time). I reconnected the ISA and cranked the engine while watching it. It seems to function. I still think, however, that it isn't letting air through because of the above reasons. I'm planning to replace it. If anyone thinks this is a bad idea, please let me know. Any other input is greatly appreciated. Again, sorry for the long-windedness. - -Derek Kaznoski '90 Alfa Romeo Spider ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Fri, 5 Nov 1999 09:07:59 +0000 From: "Alex C. Peper" Subject: Re: calculator fi I picked up a Casio graph calculator, since there is a lot of programming info on web and Circuit Cellar Ink did magazine article on it for data acquistion and control. Alex > Date: Thu, 4 Nov 1999 15:10:11 -0800 (PST) > From: Jack Doe > Subject: [none] > > Hi, > I'm new to the list. I have some questions for some > EFI gurus. I was wondering if anybody is familiar > with the Texas Instruments or Hewlit Packard line of > graphing calculators. They are prety powerful little > beasts. I know that the TI uses an OS very similar to > BASIC and that it also uses an ASEMBLY language. They > might be ideal because they are built for calculating > complicated stuff. I was thinking that a TI calc > (maybe a ti 92) might be perfect for a simple fuel > injection system. The TI calcs are very popular and a > lot of people write stuff for them, they have many > followers. I don't know if they have enough I/O for > the multitude of sensors that even a simple EFI system > would require. Maybe someone can tell me? > > L > > > ===== > > __________________________________________________ > Do You Yahoo!? > Bid and sell for free at http://auctions.yahoo.com > > ------------------------------ > > Date: Thu, 4 Nov 1999 18:08:38 -0600 > From: nacelp@xxx.com (CSH-HQ) > Subject: Re: Bits and flags 165 > > When I get home got it all > Grumpy > > > At 02:49 PM 11/4/99, gmecm@xxx.edu wrote: > >Does anybody know the addresses for AF words and the bits for VATS, > >auto/manual, pwrstr switch, 4rthgear hwy mode spark adv., ld value for BLM > >not dispflow, or any others on a 89 f-body (not the vette, I know where they > >are.) I am working on a complete ecu file for 165 on f-body. Also does > >anyone have the bin for a memcal on one of these? And one for a 730? Like > >to muck in changing some program code. > >Mike Rolica > >EXT. 260 > > :-) > > > > ------------------------------ > > End of DIY_EFI Digest V4 #624 > ***************************** > > 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". > > ------------------------------ End of DIY_EFI Digest V4 #626 ***************************** 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".