Maybe this has been discussed before, but at I have not found a thread (yet). I have a 550 Maranello and would like to get the oldfashion V12 deep and agressive sound without the draw back of beeing "too loud" sounding like somone beeing 18 again... I have removed the back pressure valves. What would next step be ? Straight pipes, X-pipes, K&N airfilter ?
My 1967 4-liter 330 Ferrari has the old time V12 sound. I can assure you it does it without 3 inch pipes.