Originally Posted by my94saleen
wow, i honestly didint know that.so if your mainly gonna use pump gas for d.d. like most people do ( unless your loaded$$$$ and can afford race gas for d.d. or dont want to use meth) your better of with a stock mount?
Well a rotated turbo can be just as fun on a DD as a stock location turbo. They just don't really "Shine" on pump fuel and stock blocks. They can still achieve good power levels and leave a lot of room on the table. I loved my Perrin 30R on my DD STi, it all depends on the turbo you choose for your application. You don't need to run Race fuel or Meth to enjoy a rotated turbo kit, you just won't reach it's full potential without it, but it's best to have everything built to hold the power and maintain longevity.
Another thing to consider is every dyno reads different and they are just used as a tuning tool. The ATP turbo probably has to work harder to achieve the same power as a GT30R at the same boost level because it is restricted in flow in certain areas.
But I'm no expert, just my thoughts.