My brothers 87 325is is bogging between 3 and 5K. He changed the O=8D=B2 and MAF already. What else should he look for? I do not own a BMW but I have access to the net. Thanks for the info. Also what are recommend intakes? I am a member of the SE-R digest so I have knoweledge of the FAQ's page but could not a answer in the BMW FAQ for this. ------------------------------