That doesn't surprise me. I reckon the 7 Port is the "sleeper" in the Go range.
I have been running stock 7 Port Turbo in my buggy for a while and it's a very powerful and smooth motor. Ran 053 pipe initially and that gave a very linear response. Have recently been using the 0801 and it lifted the bottom end quite a bit, although it does not rev out quite as much at the top I don't think. Overall the 053 (and possibly the 2047) might be better suited. Yours certainly rocks with the 053 pipe
Just popped a new tweaked sleeve into mine, so I am picking it will be even more crisp and responsive now