A wide band o2 controller... Its not fully finished. I have to get some black silicone to silicone around the tinted plexi glass. looks much better in person.
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Looks good. Thats where mine was at when bought my car...although I moved it because the glare is a bitch on sunny days. Couldn't see a thing. Nice work though
now as far as how close it is im not sure. i am going to try to go by and get it on the dyno to see.