FITech Fuel Injection Hesitation

[86Prix]

Working through an EZ EFI 400HP install ourselves now and glad to hear we're not the only ones struggling. Ran great for the first 2 days then went in the toilet with the same stalling, sluggishness, problems everyone else mentioned. Can't get the IAC to stay in the 3-10 range either. Set it which is damn near impossible then drive it and jumps back up to 45 at idle! I want to stick with it because it was so good in the beginning but that 625 Street Demon on the shelf is looking pretty good right now.

 

[pontiacgp]

Have you got a good clean tach signal?

 

[86Prix]

The tach wire is tied into both the EFI and the tach in the car. Both seem to function just fine.

 

[pontiacgp]

The tach wire is tied into both the EFI and the tach in the car. Both seem to function just fine.

I would run a separate feed to the EFI, you don't know how clean the signal is and that can cause the issues you are having. Are you using an ignition box?

 

[86Prix]

No just the HEI distributor

 

[pontiacgp]

The hand held module displays the rpm so I would disconnect the dash tach and see if that cures the problem. The Fast EFI suggests running a box.

 

[86Prix]

Hey I'll try anything it's getting really frustrating thanks