It's funny what sosidge says - coz I've heard the same from a couple of people that have tried the new firware and reverted to 518.

Notwithstanding this - have any of you tried the new firware with a corally red 13.5?

I have tried 518 with the timing at 15 degrees and no turbo indoors (hertford) and found the car to be excellent with a ratio of 6. motor came of at around 30 degrees - I am gonna try it at 21 degrees to see if that's workable but on a tad lower ratio.