M274 RSS

A blow-off valve (BOV) is one of the most straightforward upgrades available for any turbocharged Mercedes-AMG. When you lift off the throttle under boost, the compressed air in the intake piping has nowhere to go — it slams back into the compressor wheel, creating compressor surge. The factory bypass valve recirculates this air back into the intake tract to manage surge, but on tuned or turbo-upgraded cars running higher boost pressures, the factory valve can struggle to vent quickly enough. An upgraded blow-off valve opens faster, vents more volume, and provides a clean release under higher boost levels — protecting...