I swapped my 870 ECM to a 165. It only took a few hours. I checked as I went and rechecked everything at least 3 times. Everything went smooth with the only error being the inverted fan think which I forgot to do on my first chip. I started the vehicle (after disconnecting the cold start injector) with a APYM from an 89 305/A4 (VATS disabled) for use later as a back-up chip. Besides the fan thing it worked well. I then burned an ARAP bin corrected for the injector size, VATS, and desired idle speed.

Thanks for all the help and info.


James

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1985 Z-28 305 TPI 223,000+ mi., Original Eng.,T-Tops,Blue/Grey
STB,SFC,GW "wonderbar",145 Speedo