Fast self tuning EZ_EFI Duel throttel body system for 440 mopar

[Terry's 65]

Okay here’sthe deal I have a 1968 440 stroker (512 ci in) with some pretty good upgrades including a very radical cam (my downfall).
I put on a fast self tuning EZ-EFI duel throttle system and after many tries and countless calls to fast it has been determined
that I have that one motor combo that is very difficult to tune and the fast system does not like my motor.
I am done with it and want to drive this car after spending years building it so it is back to carbs.
I have a almost new system for sale, almost 2800.00 invested and willing to sell it for 1550.00 + S&H
Without main wiring harness.
You can buy a main harness for about $400. Let me know if interested

 

[bigmanjbmopar]

Well that sux, were you set up for just the track?

 

[5.7 hemi]

Why is it Fast can use that system on a Hemi with duals, but not on yours....something aint right.

 

[lxmodguy]

Pull the cam out and put in something like a 250/262 on a 114 LSA.

 

[beezee]

I have the Fast EZ on my 496, with a cam running 244/256 duration @ 50,112 LSA ,525/521 lift ,12" vacuum no problem.Upgraded to a dry manifold and 42 lb injectors.
Sounds like your vacuum is low, a cam change or upgrade the computer and harness to XFI and tune with a laptop?
Fastman Rich is a member here and the one to contact with Fast EFI problems


http://fastmanefi.com/products.htm

 

[Terry's 65]

Yep somethingaint right. I have been chasing this problem for a month along with my motor builderand the speed shop where it is at now all with the help of fast tect's. Theyare not saying it will never work. They are now saying it appears it going tobe very hard to ever tune right (ya think). I am to point where it’s not worth it. I canput on some good holley’s and know it will work.