I have the VM topmount as well and have always had similar spool as you. I haven’t seen the Doc Race spool as fast as the VM from what I’ve come across on the forums though . I think the Doc Race kit has more volume/length before the turbo than the VM kit does but conversely frees up some hp up top as they tend to make higher peak numbers. Just an observation honestly I have no data to back it up.VM top mount. Yeah his numbers have me baffled honestly lol.