Chipped ecu

90wag

what is a 90 fwd stock ecu ? and where is it located. how do you tune it?

civtec350

the dpfi (2 injector engine dx)ecu is the pm5. the mpfi (4 injector engine si, and rt4wd) uses the pm6 for 88-91. the computer s located under the passenger side carpet, where the firewall meets the floor. there is a plate usually a goldish cover on top of, being held on with 4 10mm nuts. as far as tuning, the first thing i would do is convert to mpfi. from what ive heard you cant chip a obd0 computer, so you might want to consider converting to obd1.