Just a note. I recently found out that the d16y5 comes with a wideband O2 sensor. Dont belive me? Hook up an A/F ratio gauge and it will be peged out on rich due to the fact that the gauge is setup to read 0-1v and the wideband puts out like 4.7v. So what i did is bought a cheep *** vtec controller of ebay wich also has a didgital A/F readout and it works great!!! So there you go HX'ers a wideband readout for 80 bucks!!!!!