We suspect that for just about anyone firing up a new engine on a dyno for the first time, the anticipation is something akin to buying a lottery ticket—you're not sure what to expect, but hope for ...

We talk about dynamometer numbers all the timeso often, in fact, that they are treated as absolute truth. But should they be? Or are all these numbers we speak of meaningless? As it turns out, dyno ...

Just how much power can Supersprint exhaust headers add to an S54-powered BMW Z3M Coupe? In this video, we install a full header system and head straight to the dyno to find out. 🎧 Plus: hear that ...

We gave our BMW Z8 a full performance makeover with Supersprint headers and complete exhaust system, followed by a Stage 2 ECU tune and dyno session! Hear the raw sound, see the full install, and ...