That’s the idea of clipping, they cut a few degrees of the tip of the blade to let the exhaust gas past and increase flow. With some sacrifice to spool, but when not going too savage amount of clipping, it isn’t meant to decrease spool that much. Most the 20g’s available in America from the major venders are clipped to some extent.
And there’s lots of TD06 variant wheel's i saw a list somewhere where Forced performance put them in order, wish i could find it again.
I could be mistaken here, but the td06sl2 wheel was meant to be the smaller of the bunch but certainly bigger than a stock td05 wheel.
The bloke who works at rpw in perth put a gtpumps td06sl2-20g on his 2L evo with camtech 264 cams and he felt i was too laggy on a 2l and was selling it and wanting to go the the gt pumps td05-20g for more punch down low.
I asked him a few q's about it when it was for sale...
I guess it depends what his definition of lag was and how much he wanted up top. He said it didn’t wake up till 4K, but i didn’t ask if that was full boost or just when it started to make decent torque as it spooled.