I personally used a carbide bit with an air powered rotary tool, took me about 1 hour to get in the general shape and another 1/2 hour to get it to perfectly fit the gasket.
Vi-PEC = writer for Autronic branched off to his own companyReal kick ass engine management tho, I seen a factory s14 Pick up 35 whp on the dyno just because of management it is insane
I would love to know too. I've been fighting with my SD tune for like 1 week or so already and every other day it changes up. Not to mention the temperature in the area I am in keeps fluctuating.