super-amg

saturday I visited the track , for run 1/4 mille , usually , i run 13.1 @107 mille , but the saturday i run 13.5 @102 mille , i dowm 5 mille , what would produce this ??? its a lot of mille , i m vey disapoint , the tune its erased? give me some ideas for check

swedepat

Different weather? (hard wind,hotter)
Heat soak? (ran engine in lineup?)

could be a lot of reasons.

super-amg

Yeah its more hot now, its summer but Wow 5 mille less? Its to much only for weather, and the heat soak I dont know, I have a big heat exchanger, and insolation kit needs wing

///AchMeinGott

We can't diagnose with just that info. Good night(55-75) to bad night(85-100+)temps can knock waaay more then 2mph off your time though.

Does the car feel weaker in general?

super-amg

82 F that night was, the car I feel good for that I sorprice the trap speed, I was think put 25 hp of dry nos in to the blower for colder