Originally Posted by sturgillbd HLH is a 1985 MAF PROM for a 1226870 ecm. The 1227730 is the speed density ecm for later years. HLH 4.00 KB 1985 31378 1227805 1226870 3200 2531 YB L98 5.7 MD8 AUTO Is that a 2732A chip? I get a memory range/address outside of EPROM size error. How do I know what address to use? Sorry for all the newbie questions. I am searching the forum before I ask .
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