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My isspro on the 89 runs off from a magnetic pic up that is run off the balencer. Basically 2 magnets get glued on the balencer 180 degrees apart and a sensor reads them as they pass by. The pic up is part number R 8912. Not to be confused with the wire kit # R 8912-92 for the later trucks.
89 dodge 3/4 4x4, A727 ,3.07 gears, factory L S , powerstroke intercooler, S300, stans exaust with stainless tailpipe, fuel power screw turned?, fuel pin turned to deepest, 3 turns smoke screw, 1/2 turn down on starwheel. 93 W250 ex cab, 6X16's, 60 GDS, rag
Tiny Tach. Digital, and easy to install. Reads impulse in injector line. Google it.
Another vote for the tiny tach. Easy install, and seems 100% accurate. Plus it has the service interval reminders you can setup. Alot of bang for $100. Plus the new lighted version is easy to see day or night.
The fuel line impulse idea works, ... I have a fuel-line impulse rig from Snap-On that converts the impulse to a signal readable by my timing light so I can fine-tune diesel injector timing. Don't ask how much it cost, seven years ago!
1993 D350 DRW, Getrag G350, 767,000 km, IP 3/16" adv, CB, Sirius Sat radio, flat deck with headache rack, Intelligent Battery Saver which isolates the battery if draining to below 12V or so.
I got the same as Richie O. i still have to install it. I like isspro, very accurate, atleast my pryo is lol my 0-60 boost is Sunpro. but anyways im debating on either putting the tach in the same spot as the factory option tachs were OR get another pillar pod, only a single one and put it under my pryo and boost gauges. I never heard of the injector pulse tachs. sounds interesting
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