Low tach in a Mazda RX8 with Ultrastart

Hello all,

I just am working on a 2004 Mazda Rx8, I am finished with the install, doing a remote start. Using an Ultrastart 4256. I need a tach reference for this remote start. I am having a heck of a time getting it to program. I tried all 4 non black wires off the coils (one on each coil) and cannot get a reference to program. The ultrastart has a LED in the antenna, when it gets a good tach, it turns solid. It starts to flicker as I rev the engine and about 4000 rpm, it becomes a solid reference. However, I cant program this car with a 4000 rpm. The idle RPM signal is just too low for the Ultrastart to pick up. I am VERY frustrated as DEI units have an extra switch for this, but I had to use this Ultrastarter because it is a manual tranmission remote start and it is a manual.

Does anyone have any advice? How can I boost the signal on the tach? What do you think about that DEI unit that works off the Alternator and feeds a tach?

Help

I didnt see the fuel injector, rotary engine, could be in a hard to get area. I doubt the Ultrastart since it cant even see a low tach will read the injector.