The 32000 heavy duty truck edition module

I had one on my 14L ddec4 series 60 for about a month.
On level 3 the highest setting it pulled really good but would get to hot on the egts.
So I kept it on level 2 and it was okay.
But I never saw the mpg increase like they said it would. It stayed about the same or a hair worse.
I ended up sending it back and got a refund.
You might have different results on a cat but wasn't totally impressed with it on my detroit.
Oh yeah , one other thing that I didn't like was the gauge of wire they used was a little bit thin, I thought they could of stepped that up a bit. I also didn't like all the extra wires and finding a place for the module that was dry and out of the way.
Over all be much better with a proper tune in the ecm and no extra stuff hanging off the side .

That's what I ended up doing and I'm happy with the out come .