questions. I like to visit forums first to see what the issues are with cars before buying. I usually like to do a few performance upgrades but have found the aftermarket products for this car extremely expensive so far. I went to Renntech as suggested in an earlier post and found that the ecu upgrade costs $1595 and only gets 10 hp and 12 torq. That's a terrible hp/$ ratio. My Audi A4 only cost $400 for the ecu upgrade and gets 47 hp and about 100 tq (yes, I know that the a4 1.8t is extremely tunable and that's why I bought it). Now the larger crankshaft pulley kit gets you 20 hp and 20 tq for $1694 which is a little better but still ridiculous. Why should pulleys cost that much? The whole package with the 2 items previously mentioned and a sport exhaust is $3250. Yikes! This is all stuff for the 2002 model year which I imagine will be about the same for 2003 once they have the pulley kit available. Is there a lack of competition in Mercedes aftermarket products? Or do they just charge an arm and a leg because you're a Mercedes owner and must have money to just throw around?