two weeks ago I called on Yonkeracing on a Monday and requested the dyno for Saturday. He said OK. I called my tuner, then double-checked with Yonkeracing confirming we were taking a few cars Sat to tune, and he agreed. We drove for an hour to their shop w/a few cars, he never showed up. He knew who the tuner was, he should've at least called & said he was not going to be able to make it. Their business ethics really suck.