I recently purchased an all motor b20 in a hatch, it smokes a little but it put 205whp and 150lb/trq on the rollers. The car is 13:1 compression, si head, skunk stage 1 cams, vtec safc, greddy headers, exhaust, type r intake manifold, ect. I have been a dsm turbo junkie for a little too long and I was wondering is it possible to port an si head too much, to where it will kill performance. When I had my dsm, the more you took out of the head the better, I am porting the head myself so any advice would be appreciated.