Hey, my 1994 z28 starts to bog down if been driven like a few miles espiassaly if it is humid or if it has rained a lot, i would like to know any and all reasons why this bogging down is a curing. and what would be the easiest and cheapest to start with thanks guys.

 

Check for an air leak after your maf sensor. Try scaning it for codes.

 

Seem like the opti is brought up a lot and doesn't do well with moisture.