Jason's not that much heavier than me so the bike ought to run fast, and, be able to hit the rev limiter. I suppose it could be way over-jetted or have the TPU really out of whack but the diaphragms are such an easy check and can act as rev limiters I though that was a good first step. One thing's for sure, that UNI filter isn't any advantage with the stock muffs, that's only half the breathing improvement...needs at least TORs in combination to do any good.
