Originally Posted by pjinca

I don't think much of the Sprintbooster, in this case it's only slightly more expensive to get the Dinan Stage 1 tune which will give better throttle response AND give some HP too. Not crazy about the pacebo effect of the SB

Originally Posted by MP1472

my car has full dinan upgrades, engine mgmnt , throttle body , intake and exhaust ... the throttle response is dismal at best

Originally Posted by pjinca

Well, thanks for the review, that makes the ESS tune a lot more attractive. I know what that did to the M5, made it amazingly more beastly.

Originally Posted by MP1472

i really cant believe they built such lag into these cars it really is terrible

Originally Posted by doughboy540

I own a 2010 550i msport auto with 46k which i luv to death and had for two month comming from a 540i which was a great car Im still getting used to the 550i my issue with the 550 is when driving in *comfort mode* theres a throttle delay and almost like if there was a flat spot in the throttle were u press the gas mpg needle moves but the car slowly accelerate unless i step on it move then it downshifts and responds quicker the 540i no matter what speed or gear you were in it instantly responded Ive brought this issue to the dealer no cel and theyre telling me its normal how it acts I have to drive this car in sport mode for it to feel like the car It suppose to be im thinking mabe I shouldve chinged up and got an m5 to get the power I was after .....what do u guys think?

Originally Posted by ETNav382

Looking at the ESS tune and the top speed governor getting removed, does anyone know what the top speed of the 550 is?

Originally Posted by ETNav382

I know it is limited to that I meant the natural de-limited top speed. I guess I wasn't clear enough about which speed I meant.