Just bought 08 d8 slp pipe and air horn, rode it 1 day and the lean spot at 5-5500 rpm was bad enough that it made me nervous. I have 1-16-10 reflash, put a pcv with a slp program. Lean spot gone, now blubbery rich at 4-4600 or so rpm now fouls plugs if rode easy or bliping around boondocking. My son and his friends had to tow it out today, ran out of spark plugs. The boy rides a 08 d7 and its bullet proof, never misses a beat.
