F355 Nouvalari SS Exhaust First Impressions

I have the loudest car out of all my friends when we do drives. It's a 95 2.7 with Fabspeed headers, fully decatted with y-pipe and straight pipe from Fabspeed. A nouvalari Supersport exhaust and the original bypass valve.

Sounds incredible but a full day of driving will exhaust you!!! It's very loud at idle....




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@AutoFanaticF355 Have you been able to drive the car? Any impressions on the Capristo vs the Nouvalari?

 

Very interesting take. Nouvalari special race muffler perhaps? Did you ever post pics of your muffler? What is your current setup with the Cap 2 muffler? Fabspeed headers?

 

I have the Nouvalari Sport muffler (NOT Supersport),. and it is Goldiocks perfect! Not too loud at all. With normal, around town driving, it is just a tad louder than the stock muffler, and when you mash the throttle and the bypass valve opens, the sound is glorious. (running stock manifolds, Fabspeed bypass, and OEM secondary)

 

I have replaced the headers and the drone is completely gone with the Nouvalari SS muffler i told you all about earlier, the original headers were toasted with holes when i opened them.

It's perfect now.

 

Good afternoon,

Could someone please explain to me the benefits of adding a Nouvalari Y pipe to the car? Sound, etc? If the car has Stock headers, Nouvalari Cats, Y Pipe & SS exhaust; has anyone had a CEL issue? or any other issues for that matter. I was asking the rep & he advised me to come to you with my questions. I appreciate it in advance.

 

In my opinion there are no downsides to doing a non cat y-pipe on an F355. There is no secondary catalyst monitoring so removing the y-pipe catalysts wouldn't cause a check engine light.

So, benefits would be louder on open bypass (if that's what you want), lighter weight, slightly decrease engine bay temps, maybe a slight increase in flow potential depending on the design.

The stock y-pipes are very high flowing so wouldn't expect much power gain.

If your primary goal is something other than increasing exhaust volume your money is probably better spent elsewhere.

One more thing I would add that's just an observation but I think the original design intended to stop/minimize crossflow between banks through the y-pipe when the bypass valve is closed.

There is a divider in the 2.7 pipe and kind of seems like same goal if you look at the angles of the 5.2 version.

When I built the y-pipe for my car I used a merge collector which put the two input pipes parallel before entry. (as opposed to the design of some that merge the tubes together)

 

Thanks very much!