I got the chip today, and immediately installed it. Once I got it installed, the car wouldn't even turn over. It would sputter, then just die. I thought the connection was just dirty, so I cleaned them again. After I did this, the car turned over, but it was misfiring. I called to see what could be wrong, and they said that my EEC codes probably don't match the chip. They think this is because the factory set new codes for it or something. I was a very disappointing day for me. But SmartyParts is nice enough to refund my money.
'94 Navajo, 4.0 V6, Auto