I've now run the freshly rebuilt A4 a few times. Sounds decent to me, but I'm not sure how a perfectly running unmuffled A4 should sound. I'm hoping some of you with more experience can advise me.
Here it is running at idle. I assume the slight sputtering is just because it's unmuffled.
Running at idle
Here it is running a bit faster, maybe around typical cruising speed. Sounds a little rough to me. Is that because it's unloaded, and if it were loaded up with a prop it would be smoother?
Running at Cruise
In general, does this sound good? Or do you hear anything of concern?
Thanks