Got the initial round of testing done Friday. The Piecha exhaust diffuser was a bit more involved and could not be tackled in 1 day. So we'll have to wait for the diffuser and exhaust to be installed to run the second round of power tests. The gains look good on an otherwise stock CLA250 @ +20 WHP / +37 WTQ. Figure in the drivetrain loss via the DYNO and the numbers are right in line with Carlsson's advertised numbers. Plus it really fills in the mid range. The "butt DYNO" will enjoy this mod more than the numbers say.
Focus on the bottom numbers next to WCF. WCF = With Correction Factor, meaning it ads in the calculation from the weather station that is connected to the DYNO for air temp, baro, humidity, etc.
We are working with Carlsson to have these in stock and readily available. Currently there is one module available, hit us up if you want it.