Join Date: May 2008
Location: Venice, California, USA
About the only time you hear actual "engine" sound is from an air cooled motorcycle, and that is only when the mufflers work.
For a modern, water cooled car, the water and water jackets absorb a lot of sound. The bodywork (hood, fenders, firewall) stop a lot of sounds. Then, there is all the heavy insulation in the engine bay that "insulates" both sound and heat. Hearing the engine is almost impossible, which is why a seasoned mechanic has a stethoscope as part of his arsenal.
We are left hearing things like the intake, tailpipe, wastegate (most don't vent to an audible location, the 4C is an exception), cooling fans, tire hum, and my farts if I'm in the car.
Some cars, such as the Fiat 500 Abarth and the Alfa Romeo 4C, don't have a muffler. I owned an Abarth and currently own a 4C. The turbo and catalytic converter both absorb a lot of sound.
I test drove both a Giulia Quad and Giulia Ti. The Quad had an exhaust note. The Ti did not. I didn't notice much of anything in the way of intake or wastegate from either. Perhaps I didn't drive them long enough? Yes, I got on the gas, full throttled both of them. There's a reason, and it's valid, as to why the Giulia base and Ti are whisper quiet. They are sedans. Passenger cars. The general populous expects a sedan to be whisper quiet.
My thoughts are that I need to change both the intake and the exhaust so I do get some sort of rumble, and improved breathing (which in turn helps with better throttle response). I'll probably wait for the aftermarket companies to build a few.
Clearly, the Giulia is a performance minded passenger car that offers something for the driver as well as the passengers. It is no sport car, even though it can be driven in a sporty fashion. Is the Giulia a GT (grand touring) or a saloon? As modern cars go, it's probably a saloon that doesn't drive like a saloon. Or a large GT. My one ton truck fits the sport car definition better than the Giulia does, but it's no sports car no matter how hard I flog the thing.
2015 Alfa Romeo 4C
Last edited by Racer Z; 03-02-2017 at 10:05 AM.