Just too out my GTX DI for the first time this morning and found that the thing has a miss under load. IF you ease on the power its ok but still pops a bit. The engine will only rev to about 6100rpm and the spedo was reading about 60km/h max. I was under the impression that these things rev to about 7000rpm?
Also when I got it home and did the flush, I reved it to about 4000rpm and could feel and hear that the engine was still missing and not reving clean.
I am going to replace the plugs and give it another run tomorrow morning. Is there anything else I can check?