DSG7 to DSG6 gearbox swap – Skoda Octavia A7 1.8 TSI
As enthusiast, we always come up with solutions to a problem. Breaking parts eventually paved way for a solution and that is upgrading the weak DSG7 DQ200 to a DSG6 DQ250, which has much better torque handling even on a stage3 IS38 setup . Below are the parts we found and made it to work :-
It includes: A gearbox assy (from gen3/mqb platform Golf7 diesel), starter motor, flywheel, driveshafts, and gear selector.
Full DSG recalibration
Being a frankenstein, the parts came from two different cars. The mechatronic unit from one, the gearbox from another. To make this work, we combined a used mechatronic unit, a used gearbox and wiring harness required to connect it to the car. The mechatronic unit did not originate from this gearbox and the gearbox itself from a diesel car, therefore it had to be adapted for use with gasoline. The problem with the mechatronic was it had diesel calibration data, but we now have a gasoline engine. Shift points, gear shifts, rev limiters were all made for diesel. As a result, we completely changed the DSG calibration to match the new engine and hardware parts in the gearbox.
Result? Everything worked perfectly fine as if it was factory fitted. Happy days 
This is the DSG7 DQ200 unit that came out of the car
