Ignoring cost and install difficulty, what is the best efi system for a 440?

[Dino]

Of course cost is an issue as is the ability to actually install and tune efi but I think the most important thing here is which is the best?  No point in spending thousands if it's a mediocre system.

What kind of efi do modern cars use and how can I make it work on an old 440?  Is there an existing sytem on a similar sized engine that can be adapted to work on a 440?

[MSRacing89]

The FAST XFI system is the going to the most advanced and probably costly system to run at the moment.  Everything is tuned by your hands through laptop interface.  I currently run the FAST EZ EFI set and really like it.  Its on a 550HP 11:1 BB.  These systems are very install sensitive and require a good electrical system and electrical signal to work properly.  If done right the EZ system is probably 3 days of install and, depending the fuel system you chose, between $2k and $3K. 

I am sponsored by Comp Cams (maker of the FAST systems) and they are set to release the new EZ system called 2.0.  It has touch screen interface, timing control, more advanced ECU, etc.  I would think I could be the first MOPAR to have this system installed so I will try to give some feedback when it happens. 

[Dino]

The FAST XFI system is the going to the most advanced and probably costly system to run at the moment.  Everything is tuned by your hands through laptop interface.  I currently run the FAST EZ EFI set and really like it.  Its on a 550HP 11:1 BB.  These systems are very install sensitive and require a good electrical system and electrical signal to work properly.  If done right the EZ system is probably 3 days of install and, depending the fuel system you chose, between $2k and $3K. 

I am sponsored by Comp Cams (maker of the FAST systems) and they are set to release the new EZ system called 2.0.  It has touch screen interface, timing control, more advanced ECU, etc.  I would think I could be the first MOPAR to have this system installed so I will try to give some feedback when it happens. 

Sweet! 

I was just reading about mass flo.  It's supposed to be sequential but don't you need a cam signal to make that happen?

[Troy]

The FAST EZ system is mega cool, easy to setup, and learns (self tunes) on its own. The newest handles spark as well. It will install on any carb intake - but that's also a detriment as the injectors end up in the throttle body (not on the port). You can also purchase the system without the intake and throttle body set up for port injection if you have an intake made. The FAST XFI is ultra configurable but probably way overkill if you aren't running boost, 16 cylinders, anything out of the ordinary, or don't want to mess with it constantly. I have read about the Mass Flo stuff but it's been a while. The MegaSquirt system(s) is very neat in that it's not technically a commercial product and you can build it on your own. It's also very configurable and has lots of options. You can now buy "kits" which allow you to get a big head start - but I've determined that buying a "plug and play" system isn't much cheaper than just buying a FAST EZ (not to mention warranty and support).
http://www.fordmuscleforums.com/advertiser-announcements/484632-fast-ez-efi-self-tuning-fuel-injection.html

I've been playing with retrofitting factory boxes. I can't imagine that it ends up any cheaper to be honest. I was hoping to retain all the other fun features included in the factory PCM like one-touch power windows, head/interior light timers, trunk releases, compass and temperature display, digital gauges, etc. but that's a lot to tackle in addition to the EFI. I bought a factory box and used wiring harness for about $400. I already had the throttle body and injectors. After getting an intake and paying to have the PCM reprogrammed I'll have over $1,000 in it. The FAST EZ "port injection" system is $880 and I can tune it with the controller.

You'll need a pressurized fuel system with a return line (preferably) for almost all of them. Assume that cost ends up about the same (fastmanefi.com has them for about $300).

Troy

[Dino]

I'm also taking 'plug and play' with a grai of salt.  It's usually more like plug and throw a fit.   

So it seems that all these options are pretty good and if we're talking reliabiltity, cold start ability and all that I'm sure any of these would fit the bill fine but what would be the most efficient and give the best mpg? 

Mayb eit's redundant.  Even when I drive the car every chance I have, I still only do about 3000 miles/year so a 1 mpg increase is not going to make a dent, espceially considering the cost of the system itself.  However, I would pay more fo r asystem that gets the better mileage, is the best for my drivetrain and doesn't burn your eyes out of your sockets!  Actually I'd pay good money just to have the latter fixed.   

[MSRacing89]

Buy some high flow cats!!

The EZ system does not improve gas mileage in most situations, but you do get the constant self aware tuning in situations like altitude change, hot, cold, different throttle positiosn, etc.  You will notice instant throttle response improvement.  I can get better gas mileage on longer drives as you can reach down and change the tune in real time with the hand held unit.  Just lean it out a touch and you will see some improvement. 

[flyinlow]

Buy some high flow cats!!

The EZ system does not improve gas mileage in most situations, but you do get the constant self aware tuning in situations like altitude change, hot, cold, different throttle positiosn, etc.  You will notice instant throttle response improvement.  I can get better gas mileage on longer drives as you can reach down and change the tune in real time with the hand held unit.  Just lean it out a touch and you will see some improvement. 

Have you put cats on your Charger?  If so where do you put them?

[MSRacing89]

Buy some high flow cats!!

The EZ system does not improve gas mileage in most situations, but you do get the constant self aware tuning in situations like altitude change, hot, cold, different throttle positiosn, etc.  You will notice instant throttle response improvement.  I can get better gas mileage on longer drives as you can reach down and change the tune in real time with the hand held unit.  Just lean it out a touch and you will see some improvement. 

Have you put cats on your Charger?  If so where do you put them?

No I have not.  But I have my eye on them.  I make enough HP that it can put out some fumes that may not be appealing to most.  Magnaflow has a good set that I may be doing this spring.

[flyinlow]

I have thought about it too. They would fit in place of the muflers ,but that is a long way fron the engine. Don't know if cats and resonators would cut the sound enough. Would probably work better with fuel injection.

[randy73]

cats have to be close up front, they have to stay HOT. Had magnaflow bullet cats on my vette, really liked them and they are only 4 - 4 1/2" wide and I think 13" long.

[MSRacing89]

Buy some high flow cats!!

The EZ system does not improve gas mileage in most situations, but you do get the constant self aware tuning in situations like altitude change, hot, cold, different throttle positiosn, etc.  You will notice instant throttle response improvement.  I can get better gas mileage on longer drives as you can reach down and change the tune in real time with the hand held unit.  Just lean it out a touch and you will see some improvement. 

Have you put cats on your Charger?  If so where do you put them?

Yeah, that CATS need to be just off the collector on the headers.  I already run mufflers and resonators.......tells you loud this suckers gets!

[MSRacing89]

cats have to be close up front, they have to stay HOT. Had magnaflow bullet cats on my vette, really liked them and they are only 4 - 4 1/2" wide and I think 13" long.

Did you get a noticable difference in fumes?  Or were they just replacement units??