DIY_EFI Digest Tuesday, 6 February 1996 Volume 01 : Number 034 In this issue: Re: fwd: What about H202 REQ. Info on EFI Re: Re[2]: IAC Re: Spellcheckers Re: Electronic thottles Re[4]: IAC See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Wayne Cox Date: Mon, 5 Feb 1996 23:03:24 -0500 Subject: Re: fwd: What about H202 >>I thought this was a very interesting question from the hotrod list. Any >>comments? I'll forward them back to the hotrod list... ............ >I've been thinking on and off for a while about hydrogen peroxide >injection. It would seem to have all of the benefits of water The stuff you dump on flesh wounds is only a fraction of a percent dilute solution. They tried to use concentrated stuff as rocket fuel in the 40's, but it was a little unstable - organic stuff would burst into flames on contact. It's an outrageously strong oxidizer. If you could get enough to produce usable amounts of O2, I think you'd have enough residual non-compressible water to break something in your engine. -WC >Legalize guns, drugs and cash...today. 3700 Segerstrom Ave OK - cool. ------------------------------ From: brian Date: Tue, 06 Feb 1996 01:07:51 GMT Subject: REQ. Info on EFI `Hi I am looking for info on EFI for a friend. He does a bit of rallying and was reading in a magazine about a man in England that built is own version. This is like the ProFlo fuel injector in that he can alter the settings while it is running. Unlike the ProFlo this connects to an ordinary PC . This allows him to put it on a rolling road and fiddle with the settings till he gets the right horsepower etc. The Circuit I understand was called M3d and the guy built it for a Few hundred pounds. I would appreciate any help on this as he is driving me up the wall. Thanks Brian Prior ------------------------------ From: arthurok@xxx.com (ARTHUR OKUN ) Date: Mon, 5 Feb 1996 22:12:26 -0800 Subject: Re: Re[2]: IAC You wrote: > > > I'm using a Wolf 3D system which doesn't allow for control of the > standard IAC, thus I was thinking of either using: > > 1. the old style solenoid switch that opens the throttle a bit when > power is applied. Requires the original IAC mounting hole to be > blocked off. > > 2. a temperature sensing bi-metal type air by-pass valve as used on > many Nissans. Requires blocking of the original IAC mounting hole > also. > > 3. Nothing at all. > > Dan dzorde@xxx.au > > >______________________________ Reply Separator _________________________________ >Subject: Re: IAC >Author: diy_efi@xxx.edu at INTERNET >Date: 05/2/96 4:25 PM > > >You wrote: >> >> >> >> On the subject of the GM IAC(idle air controller) for the TPI >engines. >> Does anyone know of a replacement, working of sensing the >temperature >> or similar, ie. some sort of bi-metal spring system. The problem >is >> that I need some sort of idle stabilisation on a TPI system but >the >> ECU does not allow for control of the standard IAC. >> >> Is it possible to leave the IAC off all together? >> >> Any ideas will be appreciated. Preferably the parts should be >> available of Australian cars, since US parts are to expensive >over >> here. >> >> >> Dan dzorde@xxx.au >> >> >the iac is just a little stepping motor gm bottoms it shut at start >and then backs it off a a certain number of steps to control idle >mixture air and also as a deceleration valve during throttle release >closing. what sort of ecm are you using? >ford uses a solonoid thats pwm to do the same thing but ive heard the >gm stepper works better and smother as long as the valve lead screw is >kept clean (i own a iac gm ). >maybe i could design a little gaget using a pic16 up. >Does that wolf unit have any output that could control throttle air input you realize that its a multiphase ac stepping motor could probably make a circuit using cheap ics that would open it realative to tempature or how about a super simple circuit to open or close it with just a pair of push buttons when you read it with a scan tool it just tells you the number of counts open 80 is pretty much maximum but it will send it more if it thinks the iac is sticking so i guess you could concider it a feed back loop .> ------------------------------ From: arthurok@xxx.com (ARTHUR OKUN ) Date: Mon, 5 Feb 1996 22:27:19 -0800 Subject: Re: Spellcheckers You wrote: > > > >>Peter, with all due respect, one of the biggest problems the U.S. has >>is that it is blisfully ignorant of other cultures. English is not >>the only language spoken in the world. In fact, I believe it is >>*third*. A quick look at this guy's name and location will tell you >>that this guy's mother tongue is French. If you spoke French you >>would understand why he spells like that in English. > >I did look at and note his address, and said "up there". I prefer to >disagree with you on the spelling being in french. It just looks bad to me. > > >>I thinks he did >>quite well....you understood what he was trying to say -right ? > >No, and that was the reason for the comment. Working my way through all of >the spelling errors became such hard work that I gave up and went onto the >next posting. Therefore, if I had been able to contribute anything to the >reply, I wouldn't have, because it would have been too much like hard work. >This is why there are spell checkers, so that simple errors can be >eliminated by the computer. Poor English is a different story, and my French >would be a lot worse than his English, but I would try and run it through a >spell checker to get some sort of chance of the best possible responses to >my questions. > > >If the guy didn't speak English then the grammar and text content would be >very different and then everything would be excusable. > > >> How about some slack ? >> > >Ok,you answer the question, I'm off to the next posting > > >>Mark Hillier >>mhillier@xxx.com >>Montreal, Canada >Peter Wales >President Superchips Inc Florida >Chairman Superchips Ltd Buckingham "Timing is everything" >Superchips home page with all the answers http://www.superchips.com > i'm guilty too because i just bang these messages in with one finger and don't really spellcheck or grammar check that carefully. i wish i was a polyglot i would enjoy understanding the dialog in foreign movies on u.s. television.> ------------------------------ From: arthurok@xxx.com (ARTHUR OKUN ) Date: Mon, 5 Feb 1996 23:00:13 -0800 Subject: Re: Electronic thottles You wrote: > >Hi Guys > I read recently that as part of the Merc skid control system they >switched to using a remote throttle. i.e. there is no cable >connecting the pedal and the throttle. Are the current stepping >motors sufficiently quick for this? I can see advantages in idle >control, gear selection and dual throttle bodies. > > Well the volume of this list is getting too much for the moment so >I've sign off for the next few months. When I get closer to >materialising my project I'll hop back on. See you guys later. > >1978 Toyota Corolla KE50 Liftback 1.2l 3K-C 8ohv 275 000km >1992 Mitsubishi Lancer CC GLXi Hatch 1.6l SOHC16v 4G92 60 000km >1967 Rover P6 2000 SC Sedan SOHC8v ?15 000miles >-- > _--_|\ -|- Gavin Walker > / \ | > \_.--.*/ <- Canberra, gavin.walker@xxx.au > v Australia Phone +61-6-2167030 Fax +61-6-2167111 i thought about a electronically controled throttle plate in a way an iac is that i would like to build that for my buick . i wonder if i could use the cruise control vac motor as a servo maybe a dc motor servo would work better if done properly it might solve many emission problems and lead footing which drops engine vaccume and leans the mixture. the only thing is that it has to be designed carefully to prevent "runaway throttle". ------------------------------ From: dzorde@xxx.au Date: Tue, 06 Feb 96 16:15:48 Subject: Re[4]: IAC Previous stuff deleted >Does that wolf unit have any output that could control throttle air >input you realize that its a multiphase ac stepping motor >could probably make a circuit using cheap ics that would open >it realative to tempature or how about a super simple circuit to >open or close it with just a pair of push buttons when you read >it with >a scan tool it just tells you the number of counts open 80 is >pretty much maximum but it will send it more if it thinks the iac is >sticking so i guess you could concider it a feed back loop .> It just so happend that it may be possible to configure an aux injector output as a mainly on/off output for an IAC. It all depends on when the software is being updated. ------------------------------ End of DIY_EFI Digest V1 #34 **************************** 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".