DIY_EFI Digest Wednesday, June 30 1999 Volume 04 : Number 388 In this issue: Re: DIY_EFI Digest V4 #387 re: aftermarket FI parts source? Autronic SM2 cal files Is the non-digest version working yet? Batteries See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Wed, 30 Jun 1999 08:42:03 -0400 From: "Gary Derian" Subject: Re: DIY_EFI Digest V4 #387 It takes 140 cfm of intake to make 100 hp. Since exhaust is hotter, there is more. Lets assume 1100 deg F for exhaust and 70 deg F for intake. (1100+460)/(70+460) = 2.93. Therefore every 100 hp has (140*2.93) = 412 cfm of exhaust. 600 cfm would be only 145 hp. If the exhaust cools to 800 deg F by the time it gets to the muffler, 600 cfm would be 180 hp. The engine could easily stand 1 or 2 psi backpressure so that muffler is good for more than the above hp levels. If you knew the backpressure at 1000 cfm, you would better know the flow characteristics of the muffler. Gary Derian > > Date: Tue, 29 Jun 1999 22:58:22 -0500 > From: greg kring > Subject: exhaust formulas?? > > Is there any formulas for figuring exhaust flow by horsepower level? I > was looking at some Dynoax mufflers and there is one they rate at 0 > backpressure at 600cfm. What horsepower level would that be? It has > three inch inlets, so it should be fairly decent. > greg kring > ------------------------------ Date: Wed, 30 Jun 1999 07:44:38 -0500 From: Jason Haines Subject: re: aftermarket FI parts source? Accel has a replacement adjustable regulator for the Bosch fuel pressure regulator - they just released it this year. Bosch also has one but they are hard to get in this country. Jason > >Need a new parts supplier for things like extruded fuel rails, >adjustable regulators, etc. I've been using Force-EFI, but the delivery >times are horrible. Kinsler is just to high. Right now I need a good >adjustable regulator to replace the stock Bosch one on a 280zx. I don't >need something as serious as a SX (or as expensive). A simple in and >out with barb fittings will do. Thanks, >Greg Kring >Fort Worth, Texas > ------------------------------ Date: Thu, 1 Jul 1999 00:09:08 +1000 From: "Nick Tangney" Subject: Autronic SM2 cal files This is a multi-part message in MIME format. - ------=_NextPart_000_0005_01BEC355.F07098A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I'm interested at taking a look at some other Autronic cal files so that I can compare some of the parameters I'm using with those others have chosen for their SM2 ECUs. I will gladly provide copies of my own cal files which I use on my 71 Alfa Romeo GTV turbo. If you would be interested in emailing me your cal files, please send them to alfagtv@xxx.au Thanks, Nick Tangney Brisbane Australia - ------=_NextPart_000_0005_01BEC355.F07098A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I'm = interested at=20 taking a look at some other Autronic cal files so that I can compare = some of the=20 parameters I'm using with those others have chosen for their SM2=20 ECUs.

I will = gladly=20 provide copies of my own cal files which I use on my 71 Alfa Romeo GTV = turbo.=20

If you = would be=20 interested in emailing me your cal files, please send them to <= /FONT>

Thanks,

Nick=20 Tangney

Brisbane=20 Australia

- ------=_NextPart_000_0005_01BEC355.F07098A0-- ------------------------------ Date: Wed, 30 Jun 1999 12:22:41 -0400 (EDT) From: William T Wilson Subject: Is the non-digest version working yet? The subject says it all :} ------------------------------ Date: Wed, 30 Jun 1999 10:29:46 -0700 From: Bill Edgeworth Subject: Batteries I am having trouble finding a memory back up battery to fit a european made circuit board. I would apreciate if anyone could contact me off list on where to get such a battery in north america. The battery is a 3.6 volt 60 mAh with 3 solder pins. On the positive end there is two pins 10mm apart the negative end has one pin and the distance end to end of about 19mm the diameter is about 16mm. I know I could make something else fit but would prefer not too. I have looked in the Digikey and Newark catalogue and they do not have such a battery. Thanks, Bill Edgeworth ------------------------------ End of DIY_EFI Digest V4 #388 ***************************** 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".