I have a 95 7.4 HD 2500 with a 4180E with a 16197427 BMHM, I copied the original bin file from the factory chip.


My main problem is I can’t seem to find a XDF file that works correctly.
According to the XDF, ADX lookup chart, the 16197427 computer should be a $0D, but all info I found, and all files I found shows $0D is for the 4160E Trans.

And it looks like the $0E should be for the 4180E Trans. But nether XDF shows a correct spark map, they have some kind of weird problem somewhere.

The only one that shows the spark correctly is the $31 (Tunepro shows the original bin is a $31 mask) I’m using the $31 v250, and it does cover the 4180E trans, but not all parameters that I change will happen, for instance, I can change the spark table but idle setting will not be correct, I set it at 8° but it stays at 12° adv. But it will change farther up off Idle.
But, maybe I’m just missing settings somewhere and I keep looking.

Also the “Open and Idle” VE table has all “0’s” in it. But I opened it with a $0E XDF and the table is filed in!


One of the other problems I’m having is, I stroked the 454 to a 496, and I bumped the fuel psi to 40 psi (calls for 27 psi) and it actually runs pretty well, and the BLM was right at 128 most of the time, before doing anything with the computer.


So now in tune pro I increased the cyl size from 56.66 to 62.43 and changed the TBI flow rate from 67.9 @ 27 to 82.6 @ 40 and the BLM went to 156!
So I lowered the flow rate and actually ended up back at the original 56.66 flow rate and it still shows a 129-130 BLM. It was better before I messed with it, and I have no Idea if I shoud mess with the VE tables since they are no entries in them.


This is my first try at tuning a computer for an engine. I am learning but I still feel a little… ok a lot confused, and I don’t know what XDF file to use for my computer and bin.


Any chance Anyone has a link to a “getting started post” that might explains what each setting does exactly and the relationships to other settings, Most I understand, but quite a few are still over my head at this point and I hate to bug you guys asking stupid questions.