LOCKED TIMING WITH AFR 165

I dont know if this will help, A freind of mine runs his 347 with the spout out all the time. Timing is locked at 36 deg, 50 to 70 psi seems high.

Fix the wiring problem in the SPOUT circuit rather than band aid the problem.

Possible causes:
Bad TFI module. The TFI takes the spark advance signal set from the computer and uses it to fire the coil.

Broken wire or bad connection -with the SPOUT connector in place, measure the resistance between between the yellow/lt green wire on the TFI module and pin 36 on the computer. You should see less than 1.5 ohms. Measure the resistance between the yellow/green wire and ground with both the computer and TFI connectors disconnected. You should see more that 1 meg ohm. Do not hold on to the metal probe tips with your bare hands when you make your measurements. Doing that will result in incorrect measurements. You can use a safety pin to probe the connecors from the rear.

Diagram courtesy of Tmoss & Stang&2birds



See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring http://www.veryuseful.com/mustang/tech/engine/ Everyone should bookmark this site.

The following is a view from the computer side of the computer connector.

I have a 306 with AFR 165's, 9.5 compression, N41 cam, and Systemax II and my fuel pressure set at 44 PSI gave me a 13.2:1 AFR on 24# injectors. You're dialing up fuel pressure too high with the 30# injectors, which may be overkill for your combination.

Listen to jrichker and fix the spout connector.

I leave my spout out, I lock it down at 32-34.

Runs great, no problems.