The factory shifter has been augmented with a taller shift knob for gear selection on the OEM BMW transmission. Speaking of the transmission and drivetrain, it’s time to get into what makes this golf club hauler go around the track so fast.
With Solo’s current configuration as of this article’s writing, this “little” motor put down 624HP and 597 ft/lbs with 28psi of boost being forced through it. They have some upgrades planned, but let’s go through what’s in there now.
OK sure, but what is it for? It’s the solenoid that is controlled by the Motiv Motorsport Boost Box. The interesting thing about the Boost Box is that it is designed to work with the factory BMW engine management system.
Solo’s 135i is still using the factory N54 Digital Motor Electronics (DME – they don’t call it an ECU because they’re BMW and it’s not fancy enough). The DME, however, has been re-programmed and re-mapped for Solo’s needs to achieve the power numbers. Working together with the Boost Box, the engine runs like a factory unit, factory key and all, albeit with a lot more horses running around under the hood.