When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
:iagree:
I updated the prom in my '86 to the ARAP code for an '89 and like the results. I was told the extra timing would cause spark retard problems with my iron heads, but I have not seen it yet. Just remember to disconnect the cold start injector when you swap to the later program code.