Don't have VH but same system SLK has 2 into 1 K&N filter, no PC, Ivan's Flash, 240, before the new filter 48 to 50 just filled today 51.8 and everything around here is hills do mostly 50 to 65 and a lot in 4th after the flash don't use 5th much unless over 60, Difference ?? must be my weight 135