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Not sure what you mean by the ecm? I have the ev2 gauges and all there is is the gauge, wire harness, and sending unit. The wires were long enough too so it was pretty easy installing. Do you have a link or something to show me that ecm thing? As far as I know it's all built into each gauge.

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That is pretty neat. I think I will go wit the EV2 Gauges. I doubt those require the use of the ECM. Thanks!

You'll be happy with them! Make sure you get the dimmer to go with them. I didn't and they are considerably brighter than the stock gauges.
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Are there any other items that I'm gonna need when ordering the gauges? I'm going with the Electric Fuel Pressure gauge (0-40PSI), EGT (100-1600), and Trans Temp (140-320). For the EGT, should I get pre or post turbo? Whats the difference?

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Are there any other items that I'm gonna need when ordering the gauges? I'm going with the Electric Fuel Pressure gauge (0-40PSI), EGT (100-1600), and Trans Temp (140-320). For the EGT, should I get pre or post turbo? Whats the difference?

You should get a needle valve from NAPA (WH6820) for the sender so the water hammer doesn't beat it to death. Fuel pressure aim for 0-30 PSI because typical pressure is at 15 PSI. (mid range accuracy) Pre Turbo is suggested because the temps at 300-500*F hotter and show you a more true picture of the temps coming from the engine. Also you want to be in the 4, 5, 6 bank which is typically hotter. Then if you use high idle 3 cylinder you can still monitor your EGT's.
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