says it needs a 4 letter calibration code from my 93. where do i find that? thanks -dave

 

I don't know, I believe I give my vin # when I placed my order.

 

It's on the the PCM chip itself, you have to remove it from the box.

 

Click the friggin help button right next to that field, it gives you instructions/shows you pics of where the code will be (on the ECM label or if not on the chip itself). Noticed that when I ordered my tune last week, mistakenly thought I needed to pull the ECM for a second (mines a 94, code not needed)