BMW M135i – Full service and 97506 Plug upgrade with Idrive and Server Update.
This beautiful M135i is no stranger to NVM HQ, running our NVM Stage 2 and having other work carried out by us previously.
The one step cooler plugs allow for lower combustion temps and less chance of pre ignition. When advancing the timing on the N55 pre ignition can occur due to location of injector to Spark plug. Reducing pre ignition is key to consistency and overall bhp.
All service carried out with the best filters and fluids with IDRIVE and SERVER update.
