Hi,
this is weird!!
the engine noise, from idle and throughout the rev range has become much, much, much throatier / deeper / louder.
this seems to have happend quite suddenly!
the car is a stock 1978 Euro 911sc, 3.0 ( no aircon. )
I have fitted a K and N panel air filter. BUT this was months ago, iand there was no noise increase when I fitted it )
Had a look under the car and can't see an surprise holes in the exhaust system.
9/10 times this extre noise is fine, sounds much, much sportier.
But on longer journeys it's begining to get very opressive!
Anyone any ideas what could be causing this deeper noise? ? ?
