Ferrari Mailing List: Re: 308/328 exhaust pulse US muffler

[Robert Garven (rgarven]

On Mar 15, 2021, at 6:55 PM, Brian Keegan <bks281 [at] hotmail.com> wrote:

Keep in mind Ferrari hated the expensive USA only modifications to sell the cars.

They only did the bare minimum to get the cars to pass the EPA/DOT certification process.

Sent from my iPhone

On Mar 15, 2021, at 9:51 PM, Dominic Carri <zigzagzoot [at] comcast.net> wrote:

 I thought the 2 inlets combined. My 308 strongly pulses pretty much equally both sides. I have felt others where 1 side is strong and the other feels like a fan blowing wind.

Also have seen on startups condensation vapors on both sides and also only on 1 side. Just seems weird!

On Mar 15, 2021, at 9:37 PM, Brian Keegan <bks281 [at] hotmail.com> wrote:

The inlet pipes break through a central chamber. The exhaust pipes are also inside the chamber. Also inside this chamber is a screen/mesh and some insulation. The exhaust seems to take the path of least resistance.

Sent from my iPhone

On Mar 15, 2021, at 8:06 PM, Hans E. Hansen <FList [at] hanshansen.org> wrote:



Might make a difference with muffler brand. I had an aftermarket Ansa that had exhaust pulses on both sides at idle, but was much stronger on one side. Being curious, I plugged one side and it didn't seem cause any misfire. I suspect mine were kinda sorta separate, but with some internal connection.

Hans. 

On Mon, Mar 15, 2021, 4:57 PM Dominic Carri <zigzagzoot [at] comcast.net> wrote:

Are the mufflers of a design that combines the 2 banks into 1 or do they exit each side separately.  On US with 4 exhaust tips should you feel the same pulsations on both sides?
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