i'm going to do the filter and shift kit either tomorrow or during the weekend. ive had this map sensor code since i've bought the car but i never really thought about it causing any issues because the car runs really good even with the code. the code is p0108.

i found a youtube video where a guy was using his multi meter to test the wiring harness and i used that on my own. my meter showed the harness was getting 5 volts with the key turned to the battery position.