for me it was slower than i thought...ripped it open on the highway...the car def feels less growly when doing 75mph but feels like it pulls really hard say between 25 and 70....what are your thoughts? dont get me wrong. the car doesnt feel slow but not AS fast as i had imagined. great car nonetheless!

maybe your car has a fawlty airmass sensor??
you'll have 306 lazy donkeys instead of real HP.

OK it should not be compared to some of current supercar performances. Don't forget, you are talking of a vehicle dating from 12-14 years ago. At that time it was really QUICK.
If you feel it is sluggish, it could be as Kowalski says due to a faulty MAF. As the ECU has "fuzzy logic" built in, it could be due that the vehicule has been driven Grandpa style and the electronics has adapted to that kind of driving.
Check the search function and look for How To do a ECU reset. That works but the full reset needs to be done using Star

lol it's hard to tell different people expect different performance, I would check the map sensor out. Try to find someone in your area with a stock good running c43 and try out how his one drives. for me the c36( 95% of how the c43 accelerates) feels great it stays really strong at all speeds, it tops out after 170mph

going to a guys shop and gettnig it all hooked up next week!

is the MAP for the pressure and the MAF for the air flow in intake? should i do both?

C43 doesn't have a MAP sensor, only MAF

its amazing how much the tech has changed.

for the 2008 honda accord v6?!
For V6, Road and Track reported 5.9 sec. 1/4 @ 14.5 sec.

must say though that this car is absolutely beautiful. love this generation c class

I test drove two,one was slower than I expected,and the other alot faster. I would assume mtce makes a big difference!

I agree this is very important! same for c36 ofcourse I noticed the same testdriving a few of them.