the chips theyre talking about are the ones that you plug in and they just advance the timing for a little more power. the v-afc doesnt even mess with timing, i dont think. even if it did the v-afc allows you to change it unlike a retarded chip.
the compression should end up being about 11.5-11.8:1, you should be able to run a small shot of nitrous with premium gas with out problems as long as you have the timing retarded a little.
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