These coils work great! Installed on my stage 2+ hybrid turbo setup for my Mk7.5 Golf 1.4tsi. All that’s necessary to run these is to change the coilpack boot with the oem fit ones to work (pull the coil head off the rubber boot these come with and swap them with the old coil boots). Courtesy of proof belongs to Mk6Chris who did a video on this on Youtube for his Mk6.5 Jetta 1.4tsi. Paired with some fresh Bosch spark plugs, the car has gained some pep within the powerband on better ignition and it looks nice within the engine bay as desired. Veltsport makes a great product here!