Yeah that's what I do, I have a clutch pedal always lift engage clutch release and back on gas. My technique isn't perfect but should be good enough. For the Indy variant though it's literally 4 up shifts, I've tried exaggerated lifting off and everything but it blows on that first lap pretty much every time. This is definitely not something wrong with my technique, it's an issue, as I said the fix is just to remove Mech Failures but that of course is far from ideal if you like running sim races with some realism.you might find the engine lasts longer if you lift while upshifting. I haven't driven this mod for quite some time so I could be crossing mods in my memory.