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Discussion Starter · #1 · (Edited)
Thanks to the recent Speeduino install I just completed in my RRC, I have a few ancient relics for sale that someone may be interested in. Everything works and was just pulled in favor of more modern tech. Prices do not include shipping from Chicago.

3.9 14CUX ECU - $150
4.2 14CUX ECU - $150
OBD code screen - $50

MAF Sensor (not Lucas, but only a few years old) - $85
Lucas Sport coil (RTC5628) only a few years old - $15
MSD Digital 6A ignition box, includes wiring harness and rubber mounting posts - $125
MSD 8910 tach adapter - $25
Old wiring loom, has been hacked up but has some connectors, relays, and fuses - FREE



I will also have a fairly new distributor for sale as soon as I can get my dummy dizzy made. Let me know if you’re interested. It’s an OEM model, I think a Britpart or Proline.
 

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Discussion Starter · #4 ·
In-line for 3.9 cux module

Ben
3.9 box is spoken for, but IMO the 4.2 ECU had a more stable tune. The R3654 tune or “operation pride” was the final revision to the 14CUX software and had improved cold start and idle fueling. I used the 4.2 ECU on my 1992 RRC for 3 years and I had no issues FWIW.
 

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I'll take the 4.2.
 
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