Had a customer about 3 years ago come in ..with a just finished bronco connection build all I'll say the truck was shipped back to them then returned ,then went to a couple shops before we got it ..with still drivability issues,,and other issues as well...after doing adjustments with the hand held got it better but still not right ..then when to a local tunner he got it better not perfect,,,,it had ported EZ EFI by fast ..
some pics of yours would be helpfull....Welcome...