Final tune, Need help |
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Final tune, Need help |
Morph914 |
Mar 23 2022, 12:34 PM
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#1
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Member Group: Members Posts: 435 Joined: 22-August 16 From: St Augustine, FL Member No.: 20,326 Region Association: South East States |
Ok , so I have the engine running but it needs tuning. A little background, rebuilt stock 2.0 with D Jet, running a 123 dizzy. It fires right up and idles a little rough at first then smooths out. It revs fairly well and sounds good. The problem starts under load, it starts to stutter a bit.
I have not messed with the adjustment screw on the ECU or tried adjusting the throttle position sensor, or been able to check my fuel pressure. I’m hoping to rally any troops in the north Florida area to help me get these final details ironed out. Thanks in advance, John |
BeatNavy |
Mar 24 2022, 10:44 AM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
You're using the ECU off a 1.7 on a 2.0? It will run, as in fire the injectors, but it's a mismatch and will never be properly tuned. You need to make sure in particular that the ECU and MPS are matched properly for a 2.0 engine: https://members.rennlist.com/pbanders/DJetP...m#Compatibility
You also need to make sure your CHT / ballast resistor setup is matched to the ECU (assuming you get a '73 setup). Correct matching for early '73 setup is an 037 ECU with an 037 MPS and the proper ballast resistor (IIRC). |
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