No the bottom end is still pretty good, definitely still has enough low end to keep from needing high revs all the time. When not ripping on it and just taking it easier, the dynoport definitely has all the low and mid range power I would expect. I only have rode with a stock pipe to compare it to, but its got just as much bottom end as the stock pipe. I really noticed a difference in where the power comes on strong though, the dynoport definitely adds a ton more top end. I'm impartial towards dynoport as thats all I've rode, but it seems to be a very high ranked pipe for blasters from mildly to heavily modded.