Re: pi swap aggitation...
Cam bolts don't have to be touched if you get heads with assembled heads (IE PI heads removed and sold as a whole) Also I believe they are TTY, but I also recall seeing somewhere APR makes a set that are not TTY, even if the bolts are torque to yield, it's not too difficult.. torque to proper spec, then turn a set # of degrees
crank bolts don't need to be touched unless you're replacing the crank for some reason -and I would say.. you could run the car without a tune, it'd probably handle it fine, OBD II adjusts fuel and timing based off of air/fuel (O2 and MAF ) BUT in your case its' basing it off the non PI motor, so you would get the best gains with a tune, for sure
2012 IS F Blue IS F Sport
2006 Mustang V6 wannabe