Ok so Im doing the dual cam swap in my S13. Got a few problems though.

First off the tach is not working and the gauge cluster is suppost to be a dual cam cluster according to the guy I bought it from. Anyway I can tell the difference between the single and dual cam tach?

Secondly my cyl. 4 injector will not fire. Hooked it up to the the cyl. 3 plug and fires fine. I also ohmed the wires from the clip all the way back to the ecu and they are fine. So do I need a new ecu?

Thirdly my TPS has two plugs on it. My harness only has one plug. So is this an S14 TPS? Will this work?

Im sure I will have more problems to come but these are my maine concern right now. We will see how well the car runs with no sensors at all on the manifold.