sounds like you are running WAY lean..borrow someone's mass air meter and see if that solves it (my stang was doing the same thing, mass air meter fixed it) check vacume leaks
up the fuel pressure to say 50psi, if it runs better (but still will run like ass) then you are running lean..go from there..what about your roller rockers.? were they installed correctly? yes a nasty vacume leak can make it run like this also..
93 Calypso notch... Built 306 H/C/I etc... Runs 11.9's
had it on a dyno, its backfiring up top, made 198rwhp 290rwtq.
AF was good, but all over the place between 12:1-13:1, probably from the backfring, when it would break up, it was smoking a little bit...seems ignition related, I have checked the timing with 3 different lights, it runs MUCH worse at 12 than 14...backfiring wise...
Single Turbo EEC-V Powered 1994 Lightning
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