Basically fited a 3.5inch exhuast to my 33 with 270rwkw and its got a valve inside the exhuast, its the dodgy version of the varex
the exhuast is only sort of quiet when the valve is fully closed, but the gases hav no where to go.
Is it ok to drive around like this to get less attention or is the pressure to high? ( il be driving under 3000rpm)