ECU question...
 

ok,here's what I have,finally got my 306 built,in the car,MAF conversion done,which leads me to this question,my ECU is an L1C,from a 92 thunderbird with the 5.0 HO,the MAF meter came from the same car as well.Cranked the car up tonight,and it runs(barely with help) like crap!,I know the computer should work in a Fox,any ideas?

Have you double checked the timing?

yeah,my timing is on,BUT I did advance my cam 4* with an indexable timing set,to bring my powerband down a little

The 4* should effect its running like crap. Give more detail Won't rev , not idling, backfiring, hard start.

pretty much all the above,I get it to fire up from under the hood with my remote switch,but I have to play with the throttle,once fired up,it runs rough,and don't want to rev up!

He was talking about your ignition base timing. Are you positive that it is set at 10 degrees?

Is it the firing order? The Thunderbird (1-4-5-2-6-3-7-8) is different to the Mustang (1-3-7-2-6-5-4-8).

yep!,by the book

EDIT:I just got to thinking about the timing,it is acting like the distributor might be a tooth off,I'll check it tonight when I get home!

the 91-93 Thunderbirds had the HO engine,which has the same firing order

OK. Did you use the LC1 wiring loom?