Mine has been great for me....Gave a little extra without voiding warranty....Unfortunately it also made me want more...I have 12k on my beauty now and should have my turbo kit in a week or two!!! Im in SC where we have 93 octane everywhere so I never saw any ping!
Love mine, feels like she woke up. +1 on the entry drug comment above though... I am scaling back on suspension mods to save for a SC. Fr the piece of mind +power (u can feel the torque difference) it is great but now I want to be able to smoke just about anything