http://www.detroitnews.com/story/sports/mlb/tigers/2015/08/04/matt-boyd--make-tigers-debut-wednesday/31115579/
From what I have read his stuff is good but somewhat flat. Going to less of a HR hitters park might help a little, but he has to keep the ball down.
Bigger park does seem to relax him a bit.
It should be better for him. I was/am skeptical because he's a flyball pitcher
who doesn't really have the stuff to strike out big league hitters, but that will play better in Detroit then it would in Toronto, so maybe he can be a decent back end guy. Even without any plus pitches, a lefty with very good command can usually be effective.
I don't really understand where this comes from.
Here were his k/9 rates in the minors
A- 7.7
A+ 10.1
AA 8.9
AAA 8.5
He had 6 Ks in 5 innings tonight against the MLB team who strikes out the least. Those minor league K numbers are actually above average, so just because he doesn't throw 95 doesn't mean he won't at least be a 7 K/9 pitcher. I really like what I've seen so far from him, he looks like a mature guy who understands pitching.

In his "good start" with the Jays, he gave up 9 hits in 6 innings. He did it again tonight. Those are the only two starts where he's struck anyone out.
His first Tigers start he went deeper but likely had some luck on his side with only 2K's and few ground balls.
His other Jays start was 7 runs and no outs recorded.
I don't think he has any plus pitches and he's a flyball guy who gives up a lot of contact. Even if he does get to 7K/9, if he gives up 1.5 hits an inning, it doesn't really mean that much.