*edit: Yep - transducer is a model #201, which is for use with an engine driven fuel pump. Now to see what JPI says about it... maybe they can exchange it?
If you don't take it, I will. I believe the 201 is what I need on my fuel-injected Cardinal (no return fuel line).
I'm in the same situation, Steve. I have a JPI unit from a Cardinal that uses the 201 transducer and I need a 231. I was going to call JPI on Monday. If they won't exchange it, maybe I can get something on a trade-in. They are rather pricey. I found some cheaper ones, but the are 'Marine Only'. Not sure what the difference is.