hi guys im from w204 forum and i need your advice
where do you live? I ask because of fuel
as to the K4 package its going to be like having the renntech turbo upgrade package, so nothing earth-shattering... about 100whp more than a tuned/dp e63, with most of the gain in HP in the upper RPMS at highway speed, so as long as you are under 5K rpm/ under 80mph, you are not really going to notice a difference in driveability vs a tuned e63





