Previous Thread
Next Thread
Print Thread
question on fuel injection #1117617
11/20/11 03:13 AM
11/20/11 03:13 AM
Joined: Jan 2004
Posts: 8,274
fredericksburg,va
C
cudaman1969 Offline OP
master
cudaman1969  Offline OP
master
C

Joined: Jan 2004
Posts: 8,274
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 Offline
enthusiast
CW25  Offline
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 Offline
I Live Here
gdonovan  Offline
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 Offline
top fuel
Mopar_Rich  Offline
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: 8,274
fredericksburg,va
C
cudaman1969 Offline OP
master
cudaman1969  Offline OP
master
C

Joined: Jan 2004
Posts: 8,274
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 Offline
super stock
turbobitt  Offline
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 Offline
top fuel
Mopar_Rich  Offline
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 Offline
top fuel
furious70  Offline
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 Offline
master
FastmOp  Offline
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: 28,067
Irving, TX
feets Offline
Senior Management
feets  Offline
Senior Management

Joined: Jan 2003
Posts: 28,067
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






Powered by UBB.threads™ PHP Forum Software 7.7.1