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question on fuel injection #1117617 11/20/11 03:13 AM 11/20/11 03:13 AM
Joined: Jan 2004 Posts: 8,295 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,295 fredericksburg,va	since i can't get any response on my other post i'll break it down into smaller questions.do they make an electronic fuel injection control just to control the fuel and not the spark or is it tied together in some way? been reading some other posts and they all seem too do both.

Re: question on fuel injection [Re: cudaman1969] #1117618 11/20/11 03:35 AM 11/20/11 03:35 AM
Joined: Feb 2005 Posts: 350 Grande Prairie, Alberta, Can. CW25 enthusiast
CW25 enthusiast Joined: Feb 2005 Posts: 350 Grande Prairie, Alberta, Can.	You can run a old school dist and just run hte fuel side of most EFI systems. Not sure why you would want to do this but it is doable. I personally like to change the timing with just a few clicks of then mouse but I suppose a timing light and wrench works as well. 11.67@118 1.88 60' with only 7-8 lbs of boost. Turbocharged, megasquirted, 407 BB, 440 source heads, roller cam, 9:1 comp. http://s292.photobucket.com/albums/mm14/beansgracie

Re: question on fuel injection [Re: cudaman1969] #1117619 11/20/11 09:08 AM 11/20/11 09:08 AM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: since i can't get any response on my other post i'll break it down into smaller questions.do they make an electronic fuel injection control just to control the fuel and not the spark or is it tied together in some way? been reading some other posts and they all seem too do both. Megasquirt will go either way.

Re: question on fuel injection [Re: cudaman1969] #1117620 11/20/11 01:07 PM 11/20/11 01:07 PM
Joined: Jan 2003 Posts: 1,938 Sonora CA Mopar_Rich top fuel
Mopar_Rich top fuel Joined: Jan 2003 Posts: 1,938 Sonora CA	EZ-EFI only controls fuel, and as was said, any other EFI system can ignore ignition timing if you want. But if the system can control timing I would use it. It's interesting to see the affect that timing has on mid-range torque that most people never knew was there.

Re: question on fuel injection [Re: Mopar_Rich] #1117621 11/20/11 07:12 PM 11/20/11 07:12 PM
Joined: Jan 2004 Posts: 8,295 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,295 fredericksburg,va	EZ-EFI only controls fuel, and as was said, any other EFI system can ignore ignition timing if you want. But if the system can control timing I would use it. It's interesting to see the affect that timing has on mid-range torque that most people never knew was there. next question,i would like using my MSD 7 with one coil,this has a lot of fire power and multiple sparks per cycle, can these systems keep up with it?

Re: question on fuel injection [Re: cudaman1969] #1117622 11/20/11 07:47 PM 11/20/11 07:47 PM
Joined: Aug 2005 Posts: 760 Southington Ct. T turbobitt super stock
turbobitt super stock T Joined: Aug 2005 Posts: 760 Southington Ct.	Quote: EZ-EFI only controls fuel, and as was said, any other EFI system can ignore ignition timing if you want. But if the system can control timing I would use it. It's interesting to see the affect that timing has on mid-range torque that most people never knew was there. next question,i would like using my MSD 7 with one coil,this has a lot of fire power and multiple sparks per cycle, can these systems keep up with it? I know the FAST XFI has inputs for just about any type of trigger, Crank or distributer. The XFI would then trigger the MSD though a "points" wire output. Now you have your MSD ignition but timing control through XFI. Allan G. 1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.

Re: question on fuel injection [Re: cudaman1969] #1117623 11/20/11 09:28 PM 11/20/11 09:28 PM
Joined: Jan 2003 Posts: 1,938 Sonora CA Mopar_Rich top fuel
Mopar_Rich top fuel Joined: Jan 2003 Posts: 1,938 Sonora CA	Quote: next question,i would like using my MSD 7 with one coil,this has a lot of fire power and multiple sparks per cycle, can these systems keep up with it? Absolutely. The XFI just drives the white wire as was said. I have set up quite a few MSD 7 systems with the XFI. The only consideration is to make sure the MSD is well separated from the XFI because of the electrical noise the MSD creates. You would not use the spark retard or any of the other features in the MSD. The XFI handles all those, including rev limiters, but you can use the MSD rev limiters if you want.

Re: question on fuel injection [Re: Mopar_Rich] #1117624 11/21/11 01:24 PM 11/21/11 01:24 PM
Joined: Nov 2006 Posts: 2,255 IL furious70 top fuel
furious70 top fuel Joined: Nov 2006 Posts: 2,255 IL	x2 on going all the way and having the ecu do the timing too, it's so simple to do and gives so much control. I'd love to have the spark only side for carb'd vehicles! 70 Sport Fury 68 Charger 69 Coronet 72 RR

Re: question on fuel injection [Re: furious70] #1117625 11/21/11 02:06 PM 11/21/11 02:06 PM
Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge FastmOp master
FastmOp master Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge	I'm hooking a MSD 7531 to a XFI now. I could use a few tips. I have the FAST close to done and was getting stuff layd out for the MSD. I really want to add a racepak as well. Rich it's David in KY. Still not running but getting close lol

Re: question on fuel injection [Re: FastmOp] #1117626 11/21/11 10:13 PM 11/21/11 10:13 PM
Joined: Jan 2003 Posts: 28,068 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,068 Irving, TX	I run an old Electromotive TEC II with distributorless ignition. You can see it on the firewall in this pic. It was a pretty advanced system for it's day. The biggest problem I had was the lack of support for it. Very few people know how to tune it. Unlike the EZ-EFI systems, these are compatible with up to 3 bar MAP sensors (30 psi manifold boost). The TEC 3r is a more modern replacement. I haven't looked at the software for it so I can't comment on how it works. www.getfuelinjected.com We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

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