Will soon be getting the LPE GT9 and the ported LPE cylinder heads for my 2012 CTSV M6 daily driver.
Had a few questions, hoping somebody could answer:
The springs, valves, and retainers come with the heads, and I'm getting the C5R timing chain through LPE - any other recommended supporting upgrades to improve reliability or longevity?
Considering it's not getting tracked, how often should the springs or other valvetrain components be checked or replaced with the GT9?
From a baseline of 560/560 now, about how much additional RWHP and torque would you expect from these two adds?
- LPE upper pulley
- AIRAID CAI with oiled K&N filter
- ID850 injectors
- MSD wires and NGK iridium plus
- custom dyno tune