Quote Originally Posted by dave w View Post
Fan "ON" is a "Ground Signal".

0411 four cylinder.jpg

I'm wondering if maybe the '0411 Four Cylinder Coil-On-Plug Ignition System will work without a Cam Position Sensor . . . Post #3 in this tread.

Likely the .bin file will still need Eight Cylinders and a Cylinder Volume equivalent to the Four Cylinder Volume?

dave w
Once I get things straight on this thing I plan to play with it.

I'm looking at it like this.
I have a 2.5L engine, I'm running it on a PCM that thinks it's running a 5.3L engine.
The 2.5L is half of the 5.3L (about). I'm using 1/2 of the injectors and 1/2 the ignition.
Each O2 sensor is getting 2.5L of exhaust (both are in the same pipe could lead to issues ???)
Cylinder volume is the same in both engines (close). It's going to put the same amount of fuel to each cylinder.
The biggest issue I foresee is the MAF will be looking for twice the air flow it's going to get. And I haven't figured out how to delete it yet.
I know it can be done, so I've got to learn how.