well most OBD1 systems don't have a chip in the 1st place. but if you read my 1st post you'll see thats EXACTLY what I said. the 1st part is basically saying you can't just plug in and program like a OBD2 system. Then I point out that you can tune through the use of replacement chips. I don't think you understood exactly what I meant.
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10
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