FiTech EFI system
I had the same issue with my coolant sensor, used a T in the heater hose line fitting and then installed the sensor into that t , just above the intake manifold.
Did some more cruising with it, ( fully controlling timing) on the weekend.. Very smooth,strong throughout. Cruised up to 30 KM over the speed limit and has never run that smooth and consistant. And every time i start it it fires right up and does not waver. Very impressed. You can watch the timing change as you drive on the handheld. Changes are very easy if you want to.
1 small glitch: at 2000 rpm, when i give it moderate pedal, there is a bit of a stumble. Does not occur if i push the pedal slower. Will call them today . I suspect an accel function adjustment will fix that problem.
Car never smells bad anymore.. I really like it.