So what does better efficiency buy you? Just a quicker cool down, maybe a little more top end? Thought it may equate into margionally higher boost. Guess I will wait and see.

 

I'm gonna be installiing LTs, deleting my cats and a cutout along with the blower. Guess I should be close to what you are seeing.

 

while i have no actual experience with blowers and BlownChevy could probably answer this better but, everything i have read says that when comparing the MP112 to the MP112HH, the 112HH is more efficient and therefore makes less heat at the higher boost levels (smaller pulleys). technically i think it(compressor) can be spun faster if you could eliminate belt slip or put on a bigger crank pulley. you might get .5-1psi more of boost on a 2.7" pulley because its not completely out of breath as a 112 would be. also with the better efficiency, you should be able to run a bit more timing and less meth. it all boils down to, the 112HH will give you lower IATs than the 112.

 

You should see about 8 1/2 to 9lbs.

 

Now that would be very nice Hope you close.

 

Good going! Looking forward to results. Good luck with the install.