Thoughts on the FAST Ez-EFI system??

[Sieg]

Originally Posted by camcojb

yep, and you can make it look like two carbs if you spend a little time hiding the harness...............

Great looking motor Jody. Definitely like the positive feedback the Fast-EZ-EFI system is generating.

[camcojb]

Originally Posted by Sieg

Great looking motor Jody. Definitely like the positive feedback the Fast-EZ-EFI system is generating.

thanks, that's one of Charley's "toys". Cool car.

Jody

[ShadowGrayGuy]

I'm in the beginning stages of having a local engine builder assemble a Dart-based 565 BBC for a street/autoX 70 chevelle. Original plan was to install the FAST XFI 1000HP MPFI system on the engine. The builder just called me today and said that FAST sent him an email today along the lines of they are now offering a multi-port version of the EZ EFI system that will support the 700+ hp I am looking for. Anyone else heard about this development? Should I go with this if it's true (can't find in on the FAST website yet) or should I go stick with the XFI system? I guess part of me wants to know "whats the catch?" - what compromises does the EZ EFI system make over the XFI set-up?

Rob

[GregWeld]

Rob --

The MULTIPORT EZ EFI is NOT NEW.... it's just the ECU and the harness and required sensors and O2 etc -- about $900 complete.

There is nothing to "support" -- it will run up to a 72 # injector.... and the fuel pressure is set not only at the regulator - but also input into the "set up" function of the start up. After that - it's just going to run the A/F ratios you choose. There are 3 A/F ratios to select -- IDLE - Cruise - WOT. You set those only if you don't want to use the defaults.

You can operate whatever pump you choose... you don't have to buy theirs. I'm running an Aeromotive pump.

You do not run any dual sync distributor - or cam timing with the EZ ECU...it only controls the fueling... so you can just run a regular MSD distributor - and do your timing and timing curve as you would on a carb car...

Sounds to me like your engine builder is a little behind on the EFI curve....

[ccracin]

Originally Posted by GregWeld

Rob --
Sounds to me like your engine builder is a little behind on the EFI curve....

And THAT is the reason for EZ-EFI!

[ShadowGrayGuy]

Originally Posted by GregWeld

Rob --

The MULTIPORT EZ EFI is NOT NEW.... it's just the ECU and the harness and required sensors and O2 etc -- about $900 complete.

Sounds to me like your engine builder is a little behind on the EFI curve....

Not sure if he is behind - but I know I DEFINITELY AM! Maybe I misunderstood him on the whole "new product" thing (was driving at the time). Bottom line is, I asked him to build the 565 and use the FAST XFI system, as I have read good reviews about their system, wanted a multi-port EFI system, and thought the EZ-EFI set up was through the throttle bottle only and was limited to about 600HP. He called yesterday and said that the EZ-EFI set up can be purchased as a multi-port system and would be easier to set up and work with than the XFI, but he stated he is absolutely OK with installing and configuring the XFI system if that is what I really want. Sooooo- my question (stupid question of the month #37) is - do I really want the XFI set-up? Will it offer more flexibility down the road or is the EZ-EFI going to work just fine (on a 565cu in chevelle that will eventually see autoX and road course duty)? I just don't want to sell myself/my engine short right now because of my lack of knowledge on the subject at this time.

Thanks for dragging me up the automotive Ladder of Knowledge...

[BanditDave]

Originally Posted by ShadowGrayGuy

Not sure if he is behind - but I know I DEFINITELY AM! Maybe I misunderstood him on the whole "new product" thing (was driving at the time). Bottom line is, I asked him to build the 565 and use the FAST XFI system, as I have read good reviews about their system, wanted a multi-port EFI system, and thought the EZ-EFI set up was through the throttle bottle only and was limited to about 600HP. He called yesterday and said that the EZ-EFI set up can be purchased as a multi-port system and would be easier to set up and work with than the XFI, but he stated he is absolutely OK with installing and configuring the XFI system if that is what I really want. Sooooo- my question (stupid question of the month #37) is - do I really want the XFI set-up? Will it offer more flexibility down the road or is the EZ-EFI going to work just fine (on a 565cu in chevelle that will eventually see autoX and road course duty)? I just don't want to sell myself/my engine short right now because of my lack of knowledge on the subject at this time.

Thanks for dragging me up the automotive Ladder of Knowledge...

Honestly,

I think you answered your own question. The XFI is by far a more versatile system. The EZ EFI is just what its name implies....easy. For Autocross, etc...where you will be one and off the throttle constantly, making the car much more prone to lean spots, I say stick with the XFI...

I would be inclined, however, to possibly find someone who is certified in XFI tuning. If he is, then so be it, but tuning a fuel injection set-up isn't as simple as slapping a carb on there and being done with it.

Good luck either way!!! I will have results of my EZ EFI set-up soon hopefully....waiting on my tank and my front accessory drive to show up.

Dave