is that 20g internally gated?

 

And how many 20G's have you tuned to come to that conclusion?

I tuned an EVO8 20G (the one that was said to surge like crazy) with an AEM EMS, and was able to break 300 whp on the EIP mustang dyno with ease, that car has no surge, and drives completely smooth. The car has 10-20 whp left in it on pump gas, if i were to tune it the same way I tune 16G's.

To get 300 whp on either an EVO8 or EVO9 with a stock turbo on the same dyno requires a more aggressive tune, and more tuning time in general.