ok i have had the 52 code come and i checked the wires its pretty bad looking. so i ordered two new plugs and ill rewire them. its also allways showing code 21 o2 sensor but its allways been there i had some wires touch and ever since its stayed on no matter what o2 sensor i put on it but i noticed i can reset the ecu and code 52 will stay off the code 21 will always come backon right when i crank it unless i get on it and build some boost. the head was just rebuilt i also installed bc 264's it runs good but i noticed when i boost its goin to eight pounds. my turbo is stock no boost controller not even aftermaket intercooler just the pipes on top are aluminum and a blow off valve. could a boost leak right at the compressor housing cause it to hit eight pounds. and could that cause the knock sensor code to fire do to more boost. if it was bad wires wouldn't it allways come on. if i drive the car easy it will stay off. p.s. the exhaust is three inches all the way to the back from the turbo i also have aem afr and it allways is looking good when at full throttle it goes to eleven is steady. is that how rich it runs when at full throttle. thanks to everyone
