So if it ran good and is now an issue...Check for a loose connection. Probably a ground.

Check with a voltmeter on Ohm setting and see where you have the highest resistance. If all that is good, check positive wires with a test light and wiggle them while testing.

If all my bad advice fails....Call Rich at FastManEFI on here....

Last edited by Dragula; 09/21/17 11:01 PM.
'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk