BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post - Installation (and coding?) of N55 Powerkit

scaramanga · 05-05-2026, 04:55 PM

Hi,

I’m about to purchase a 135i N55 E82, as I feel as if I won’t be able to afford another 1M.

I’ve been able to source the factory N55 power kit, and just wondered if the upgrade can be coded by an independent garage or needs to go to BMW. I think the powerkit comes with an ‘unlock code’ which the dealer can apply to the car ?

The car has a production date of May 2013, which I think makes it harder to flash ?

I know the fan/DME/cooler can be installed by an independent but I’m just concerned about where/how to get the coding done.

Am based in the UK, so any advice would be most welcome.

05-05-2026, 04:55 PM	#1
scaramanga Lieutenant 97 Rep 554 Posts Drives: Looking to buy a 1M Join Date: Sep 2008 Location: London / Surrey iTrader: (2)	Installation (and coding?) of N55 Powerkit Hi, I’m about to purchase a 135i N55 E82, as I feel as if I won’t be able to afford another 1M. I’ve been able to source the factory N55 power kit, and just wondered if the upgrade can be coded by an independent garage or needs to go to BMW. I think the powerkit comes with an ‘unlock code’ which the dealer can apply to the car ? The car has a production date of May 2013, which I think makes it harder to flash ? I know the fan/DME/cooler can be installed by an independent but I’m just concerned about where/how to get the coding done. Am based in the UK, so any advice would be most welcome.
	Appreciate 0 Tweet Quote