if you are a noob to all of this, stay away from turbos, tuning fuel curves in to your ecu is NOT for the faint of heart. engine code are fairly easy to figure out. "X-XX-XX" first X= configuration d,b,k,h,f,j. second and third x engine size 15=1.5l, 18=1.8l, 23=2.3l. third and forth x stand for...