i dont know what tune is on ecm, i bought it for a spare and now wont be using a 98 harness and ecm at all
the harness is off my 98 trans am, it was originally an auto harness but previous owner of the car put a 6sp in the car and started to modify the harness for use with a t56 instead...i dont know how well he did with that..or how much he did or didnt bother changing

price is 175 shipped or 160 picked up for the pair, i dont want to split the harness or ecm located in new cumberland pa 17070
PRICE IS FIRM, NON NEGOTIABLE