Re: Vw passat b6 question
With that amount of power going to the front wheels, I'm not surprised it larks around a bit - especially in the wet. The B6 chassis is known for the longevity of its tyres, and it may be that other suspension components are sacrificed to achieve this: it may be worth having someone get underneath to check for anything obvious, if the car is also skittish in the dry and with warmed tyres.
Re: Vw passat b6 question
Don't let this car slip through your fingers, EU4 and 5 petrol cars are going to start being very popular soon. Fit one of these to tame the tramping BUT it may need new inserts VW Passat Mk6 Mid 08 on Powerflex Lower Engine Mount Insert (Large) PFF85-704 | eBay