Vishnu - just ask for Robert in customer service. He knows what he sold me, was exact kit for 335i. I bought two identical kits at same time and put one in friends 335 and one in mine. Worked exactly as promised, no error codes. Performance you can feel, but both cars are running slightly hotter, and there is a burning oil smell, think the turbos are getting a workout at lower revs, hence the better torque. Going to upgrade standard oil cooler to higher capacity unit. But love the drive, feels like a V8.
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