BMW ENGINE LAG!
On BMW N62, N63 and other engines especially e65, e66, e60, e63, e64 series most likely you might experience some gas pedal lag delay or uneven power delivery at lows. It feels like you press on it and engine barely revs from lows or it revs, but you have to press it harder to feel it. Assuming engine and tranny do not have any problems and all other components run as they should, I mean no vacuum leaks, all sensors read correct values etc, but still it feels like gas pedal is slow at lows, usually in the city driving. Funny part BMW will tell you its normal lag because of drive by wire nowadays standard, though there was no delay on m62tu engines with similar drive by wire gas pedal back in 1999. Lots of people buy some magic gas pedal boosters 200-300$, but they should understand, that this booster simply sends 2x signal to DME (engine brain),so it basically feels like you press 2x harder. This method (if you call it a method) is not a good one for a few reasons:
-it will make your car less smoother or some say it fells jerky
-not safe, you can easily rear end someone in the city
-premature transmission wear and tear
-overall more stressful for the engine and tranny
-higher gas consumption
So we have been looking for a solution for a while and looks like we found it!!!
and its all original BMW OEM. You simply need to replace your gas pedal assembly with the newest one they sell at the dealers or online, but make sure they sell you the newer design, because newer pedal assembly is way better and has newer chip built in, also it has newer pedal design, so it wont get sticky if dirt or water gets there. You will be really surprised, that the lag will be gone and bmw will perform like it should without any lag from lows and overall will make it fell much smoother. Look at these pics:
newer part number is: 35426860784
you can get it form the dealer or online, just make sure they sell you newer design only, because lots of sellers still have old pedals in stock.
newer gas pedal design:
older gas pedal design:
It is very easy to remove it, just remove plastic cap, unscrew the metal screw 2, and then disconnect a connector. Install a new one and done! you can reset engine adaptations, but not very necessarily, it will work as is.
Basically BMW updated gas pedal design for that reason, but of course they didn’t recall it, so they know this problem really well, otherwise why they completely redesigned it??
This modification will work on any BMW with similar part numbers.