Our stage 3 on these N43 release the most potential without going overboard. we aimed for a gain all across the board as usual allowing you to have the best possible experience out of your engine.

This tune brings the 118i/318i N43 to the level of performance you see on the 120i/320I variant. the tune consists of different intake camshaft, BDS Cold air (optional) and software.

If you don’t know the age on timing chain we do recommend replacing it at this stage as it is a common serviceable item that often gets overlooked on these engines.

when doing this tune rocker cover gaskets are all replaced along with an oil service with filter, its a standard procedure for us when changing camshafts on engines.

We give you the option of sticking to your original intake air box with just an upgraded air filter or going with our intake solution. on pictures you can see the power difference between both options. the gain with our intake is everywhere on the torque curve, we use ITG air filters in all our applications

as per usual vehicle will be dynoed before and after the tune

stock HP 143 bhp torque 197nm

BDS tuned stock air box 168bhp torque 210nm

BDS tuned/BDS cold air 172bhp torque 218nm