Do you know if P28 ecu (stock) check for KS, VTS or something else an integra 98 nonvtec don't have. I don't have vts on my jdm b16a head and I don't have plug ks. I presently control the vtec with vafc and use my p75 in my lsvtec, is run great but you know why I want p28.

I ask this because I build my own obdII-obdI harness and I don't already received my chip for the p28 (skunk2) so I had try my p28, but the check engine light was ON.

It's probably because the ecu check for some missing sensor but I am not sure of this, I will try to read the code when I will finish my weekend shif, but before I will appreciate if you can help me to understand that.

Thanks !!