I believe that when he said the dyno was happy was that it was reading a bit high. Dyno is not a completely accurate thing but is usually in the right ball park. Like for example I did only 366 with Eric's race tune (stock everything) so that was a pretty low dyno. There have been rare cases where guys man 500 on stock injectors but not many can do it and you shouldn't be expecting it just because others have.
But back on track of the mtw situation I have a friend who was running a stage 2 and it would only make mid 400s with 190s. I was highly disappointed when those numbers came up because I had heard all the hype about mtw putting up awesome numbers but really it was a too good to be true situation and only a hand full of guys where able to make those number where almost everyone makes around the same numbers with Barder and kc turbos. It seems like it's a hit or miss deal.
But back on track of the mtw situation I have a friend who was running a stage 2 and it would only make mid 400s with 190s. I was highly disappointed when those numbers came up because I had heard all the hype about mtw putting up awesome numbers but really it was a too good to be true situation and only a hand full of guys where able to make those number where almost everyone makes around the same numbers with Barder and kc turbos. It seems like it's a hit or miss deal.