I can't help you there. I am not bragging or anything. What I am trying to say is this was all on a completely stock B16 head. I think it is pretty good for it being stock. About the compression ratio out of all my friends here in GA I have the least. A friend of mine drives his everyday on almost 13.5 and still gets 25 to 28 mpg. He also runs 12.5 all motor and full interior. So to say it is to high of compression is your choice, but we have a tuner who knows what he is doin. All of our cars (except mine) have all dynoed out at over 200hp on 93 octane pump gas.