Im sorry but the dynoport 2 into 1 is straight garbage. If u havent tried another pipe, do it. I changed to T5s which are suppose to be a mid/top end pipe and it pulled so much harder off the bottom all the way through the powerband. Pulled off dynoport put on T5s. Same jetting, same day.. No comparison.
I also run a single carb setup with a 35mm air striker. Runs perfect but Im debating on switching to pwk 28s....