the engine ECU is in the kick panel right under the glovebox. to get to it, you need to remove:
1- the glovebox (marked as 0 in the pix) there are 4 plastic clips that hold the glovebox in place, 2 on floor and 2 on the ceiling of the glovebox, simply use a taped flat screwdrive to get them out. then remove the glovebox outward
2- then the cover #1, once the gloxebox removed, you can access some (4 if i still remember right) that hold cover #1. note: there is one covered by the door seal
3- remove cover #2, use your common sense to find the bolts, be careful when remove cover#2, the ECUs are attached to it
you may not need to remove cover #3, but if you do, remember to unplug the lamp wire
hope this helps