DIY_EFI Digest Monday, 4 November 1996 Volume 01 : Number 334 In this issue: Ford Throtlle Position Sensors Re: Virus Re: Radio Shack Oscilloscope Probe Re: Radio Shack Oscilloscope Probe Re: Excessive Ignition Timing Advance Effects See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: tpware@xxx.com (TPW) Date: Sun, 3 Nov 1996 13:38:29 -0600 Subject: Ford Throtlle Position Sensors Hey there everyone . . . I have built a custom FI intake for my 5.0 Mustang and have designed to use two throttle bodies of the stock size. My questions are: 1) Providing the plate linkage is synchronized, do I need just one throttle position sensor on one tb, or do I need both. If I need both, can I wire them in series (wire them together and splice them into the existing wires of the harness? If not, then what? 2) Must I use the emmissions stuff, or can I block off that area on both (this is a race-only vehicle)? 3) How about the EGR spacers? Need 'em or dump 'em? Any help would be greatly appreciated! Tony 94 Splash GT-40 83 GT MA 66 K-code Fastback ------------------------------ From: hoss karoly Date: Sun, 03 Nov 1996 21:06:47 +0100 Subject: Re: Virus M HILL wrote: > > >If the program is not stopped, the computer's processor will > >be placed in an nth-complexity infinite binary loop - which can > >severely damage the processor if left running that way too long. > >Unfortunately, most > > Does anybody know potential values for n? Does it only damage the > processor for certain values of n or are all values dangerous? > > Martin the bigger n the more dangereous the loop is as I can remember my machine code lessons the processor temp relates to n like increase in TEMP = orig T + exp(n-40) where 40 is the maximum stack value note that the increase depends on the original temp so just by cooling the proc you can lower the damage in your computer if you can keep it under 40 deg celsius it'll survive with a light alzheimer effect on the address and arithmetic units bye charley ------------------------------ From: "George M. Dailey" Date: Sun, 3 Nov 1996 20:17:50 -0600 (CST) Subject: Re: Radio Shack Oscilloscope Probe We had a string going about the Radio Shack Oscilloscope Probe a while ago. Has any one been able to evaluate this product? A sales brochure from the shack shows it is now available (still $99.99). It sounds too good to be true. A hand held scope with pc interface and software. Is it? GMD ------------------------------ From: Gordon Couger Date: Sun, 03 Nov 1996 22:40:06 -0600 Subject: Re: Radio Shack Oscilloscope Probe I have one. It is a good scope for working with computers. It is digital and can store short period of time. It is very handy for working in tight spots so you can watch where you are putting the probe and the display at the same time. The biggest pain is the external battery. The digital volt meter is nice. I would buy another one if this on got lost. Good luck Gordon Gordon Couger Senior Software Specialist Biosystems & Agricultural Engineering Dept. Oklahoma State Univ. 114 Ag Hall Stillwater, OK 74075 gcouger@xxx.edu >We had a string going about the Radio Shack Oscilloscope Probe a while ago. >Has any one been able to evaluate this product? A sales brochure from the >shack shows it is now available (still $99.99). It sounds too good to be >true. A hand held scope with pc interface and software. Is it? > >GMD > ------------------------------ From: "John Faubion" Date: Sun, 3 Nov 1996 22:45:33 -0600 Subject: Re: Excessive Ignition Timing Advance Effects > ECM. In this case I think the temp change might > be too slow to be used in a closed loop system. If EGT increases with It probably would be if your wanting to adjust fuel per cycle. The ECM would be hunting back and forth because it can check it much more often. For kart racers it has the opposite effect. We use it to adjust the high and low speed mixtures. We consider the response fast with all of the other duties we are perform while this occurs. > RPM ( I think thats what should happen? ), with the engine accelerating, > the EGT change due to parameters other than excessive ignition timing > would confuse the ECM because the change is indistinguishable in There is one variable kart racers don't have the luxury of changing. The ignition timing is fixed and we are not allowed to change it from stock. There is no advance/retard mechanism at all. So we have to control detenation with mixture. John Faubion ------------------------------ End of DIY_EFI Digest V1 #334 ***************************** 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".