referring to my other thread regarding the upgrade to my SSV Redline - Xforce cat back + HSV headers and cats + VCM OTR + Tune = 259.5kw at the wheels. Can anyone throw any insight (guess) on how this likely converts to kw rating "at the flywheel" as I understand the Walky 310 is based on a flywheel rating? not rear wheel? Curious how my 259.5 result might compare to the Walky 310 results??