40 pin ecm on a 70 pin engine

The ECM posted is a 40 pin. See the fuel fittings in it?

 

It has a 90degree cam sensor in it. I think brian will get it figured out if anyone can cody

 

Correct. Although years and years ago before ecm programming became big guys who wanted big power used to convert the 70pins to 40pins because they could get more power out of them.

 

If it really does a have a 40pin ecm with that cam sensor I surprised it would even run. I didn't think the 40pin would even pick signal up from the newer sensor. Definitely explain issues he's having with the truck. He's gotta get a 70pin ecm back on there to get it running right.

 

acceptable for a cat shop! 90 or 100 would be more acceptable.

 

80 PSI is fine. The real test is fuel psi under load, if it gets pulled down a lot then you need to put new filters on it and test again. With new filters if it will still pull it down a lot you need to up the spring psi to increase fuel psi.

You need to get a 70pin ecm on there! Is there an adapter from the factory engine harness to the ecm?

 

Wow someone actually went through all that trouble of doing that. Only benefit I see is having a true pre low nox but if it was flashed to a 550hp file from a Cat shop it will have a low nox file in it. Could be your low power issue right there!

If he had a gauge on it while you were driving and it pulled down to 80psi and no lower then you're definitely fine there.