1993 notch w/ trickflow heads, B303 cam trickflow street intake. I bought this mustang in kind of a divorce sale. It had been sitting for a while. When you step on it it either backfires or pops through the intake. Ive tried different timing settings. I ran a self test and got a code 94? (I think ) whatever it was the book said spout circuit not completed. The spout itself has continuity and I can't find ad any gross wiring problems. Unfortunately where I live There isnt much around for tuning help. Any ideas?