As some of you may know I converted my 97 F-350 with a 460 from bank-to-bank EFI to sequential EFI by making a wiring harness and wiring in some other sensors so I could use an AEM full standalone ECU on my speed density setup (saved me from having to convert to MAF)

Donor harness from a 95 F-150.

SEFI harness ready to be installed

Stock Honda MAP sensor installed

The finished product



First run it made 203HP and 321Torque
Second run I added about 4 degrees of timing and made 210HP and 329Torque
Third run I added 8* down low (went from 19* @600rpm to 28* @ 600rpm, then calculated over to 3500 where I'm running 35*. I kept it at 35* total as a previous with an added 2* didn't increase it at all) This is when I made 207HP and 341 Torque. Adding any more timing didn't help power so I backed it off to where it was and left it. AFR's were around 12.8 - 12.9 consistently


First run

Second run

Third run

 

Great looking project. What kind of problems did you have with the stand alone ECU?

 

Thanks. None so far...knock on wood. It was pretty easy and painless. All i did was make a new harness, wire in a few sensors and it started right up

 

For the writeup of the SEFI conversion to run the AEM EMS, go here where I posted all the detailed information

 

My F-350 was stolen this last December and I replaced it with a 2012 F-150. The entire SEFI kit is for sale. It includes the complete wiring harness that I made, MAP sensor and the programmable AEM 30-1400 ECU. Let me know if you're interested. Quote me a price and we'll talk.