Thread: PCM Tuner
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Old 09-30-2020, 09:22 AM   #3 (permalink)
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The problem I run into is there are tons of power tuners, easy fix: add fuel and timing...higher shift points, everyone can do it.

BUT I cannot not find any tuners that will program what GM did back in the 80s and 90s, program the computer to lean out at a cruse setting of light load and light throttle, and to fade back to normal A/F ratios at any incress in load and throttle.

They seemly are afraid of the old wife's tail of burning up an engine by running lean.

I have tested all of that and under light load and throttle there is no danger, that IS a risk at full throttle and higher RPMS as in a race but if programed to switch back to normal A/F tables no risk.

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