that's a load of bull. our H22 is no different than the base model except for more aggressive cams. you CAN boost it but the ATTS would disengage if the engine produced more than 250 horses. and our engines don't like boost because it's a high compression engine. on stock internals, we can't safely boost with more than half a bar. but if you plan on turbo charging it anyways, why do you want to run on stock internals?