Hrtbeat1
Well-known member
Ok I just upgraded from my stock 48mm to a BBK 52mm TB. Came with all new gaskets ect. Went on with out a hitch. One thing I've noticed is a large sucking sound now. Almost the same as if the Air duct was removed from the front of the TB. Is this normal? Has anyone else experienced this? Was the engine really in that much need of more air? The performance gain was subtle and the gas mileage dropped a bit, but this was to be expected.