Sorry I missed the question. I have a race mod and a turbo mod. The race mod is good but the turbo mod feels like a completely new engine. I run it in an 8T 2.0 so I wanted a little more torque and powerhouse did exactly that. There is not much on the track that I cant outrun. The turbo spools up quicker and revs higher. It runs best with the 053 pipe and when I get the tunning right I get 11-11.5 min. I ran a .21 tuned version last year so I am very familiar with the GRP engines. The powerhouse engine is far superior, like night and day difference. Mark at powerhouse is the man.