VTEC vs Valvetronic. Honda versus BMW. Who makes a technology that makes for a better engine? Both technologies are used to alter how much the intake valve opens, thus how much air an engine gets, and ...

This video features a BMW M3 G80 equipped with a Valvetronic exhaust system and custom software tune. The upgrade is tested on the dyno to measure power gains and on the road to showcase sound and ...

The throttle butterfly valve has been the way to control engine speed pretty much since the internal combustion engine was invented. But now BMW’s come up with a way to do the job by varying intake ...