NA
Port and polish head, change to mild/hi camshaft (matspeed or works eng.) and piggyback/ems to tune

for turbo, 0.5/0.6 bar is alright as claimed by most ppl, with stock internals. tuning is important. need pigyback or other ems for this

This post has been edited by xshiro: Mar 18 2011, 12:51 PM