Changing the "
chip" (PROM) will certainly make some difference....I have a Hypertech one in my '85. However, the link David posted above goes to something totally different altogether. Most aftermarket PROMS will change the timing some, and also alter the injector pulse some, depending on what the original program was for. Some go deep enough in to change the cooling fan on/off points, cold start injector pulse, even EGR operations.
btw...I get 26mpg in the '85, IF....and that's a BIG IF, I drive it nice.
|UPDATED|12/26/2014 9:07:18 PM (AZT)|/UPDATED|
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Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"