Im at a loss to explain car tunes.In the recent weeks a few guys got together to have a bit of a blast on a private road. I own a std fg turbo,one guy had a fg making almost 300rwk ,pulled along side him while travelling at 80km per hour and we both floored it at the same time all the way to 160km per hour.I was about a guard in front.Also lined up an BA turbo making 300rwk, from a standing start .He pulled a guard in front off the start but I managed to pull him in and take a slight lead until we had to back off.These cars are making 50-60rwk more than me, saw the dyno sheet on the fg,why aren't they leaving me for dead.My fg is std.It still has the std air filter in it,nothing touched.All I want to know has anyone had a tune from any high performance shop and seen a difference.Like raced it before and after the tune or are they really a waste of money?Cheers Nick