F355 Nouvalari SS Exhaust First Impressions

I have the Nouvalari SS with their 200 cells cat and still original headers.

I do agree there is some drone at idle but it goes away when you get at higher rpms, also to be noted i had no upper heat shield and the drone was very hard to live with but with the upper heat shield in place i beleive the drone is acceptable, i can't compare with Tubi as i never had a Tubi.

Removing the cats for test pipes is a bad idea in your situation as the drone will get even worse, i think the drone is amplified by the rear bumper so any way to sound dampening would be an idea, i was quite surprised how much the upper heat shield really dampened the drone.

But as you said, the craftsmanship is up there with Capristo, however i beleive you get the true F1 sound with the Nouvalari at higher rpms and the drone nearly goes away, the SS is not for everyone, you might try the vanilla Sport version if you can't sort out the drone issue.

The exhaust bypass valve is closed in my case and will open at the usual rpms.....

You might try the Nouvalari headers as they are based on the original tube design, i will get them once the original headers are done.

 

@Drock28, @chris1866 - do you guys get any of the drone at idle?

Nouvalari described the exhaust options this way:

Not sure if anyone has experience with the regular Sport version.. There are some after market options for sheet sound/heat insulation around the muffler if you wanted to try to tune the noise.

 

Yes, and I love it! I agree with an above commentor that the Nouvalari systems might be the ultimate match for these flat-plane beasts. The '97 Spider I know to have the Nouvalari Sport muffler, Fabspeed bypass pipes, and OE headers provides the most gloriously enunciated F1 note I have ever heard from a road car.

It is loud, but it's tasteful. I wouldn't like it as much if it were any quieter or if it were any louder. It's juuuuust right.

 

Thanks I just ordered one! Let's see if you're right I'll combine it with a catless Y-pipe for a bit of edginess when the valve opens or is wired open when I do want that extra volume the Super Sport would offer.

 

my current setup.. Fabpseed headers, stock cats, nouvalari y-pipe, nouvalari SS exhaust. on a 5.2

pure cold start.. it rumbles nicely, but not too loud. however once full temp the idle is actually quite louder.
low speed/rpm side streets, I don't find its obnoxious, but it has a reasonable rumble.
main streets medium speed and highway speed. I find its more then reasonable. but yes you will hear the exhaust even when maintaining steady cruising speed. which I assume is what known as drown. but I am so used to it, don't even notice.
full throttle jabs, it screams nicely.

it took me a while to learn the mystic between the 2.7 and 5.2. in reality they both sound very different. which I believe your car is indeed a 2.7.
no matter the setup.. the 5.2 will never scream the same as a 2.7

this may be the reason what you are experiencing.. meaning your 2.7 is producing more volume in those varying conditions then a 5.2 would.

as said above, don't put in test pipes.. for sure it would scream like crazy, but it will increase much more what you described.

I would consider putting in a set of stock cats and put a catless y-pipe. this is what I did..
in addition I found my car to run much better/smoother with stock cats in place, versus the 2 years I had test pipes.

this way it quiets it down with bypass closed.. but at higher rpm pulls, with bypass open + catless ypipe will keep the scream..

nouvalari has a catless 2.7 ypipe for cheap.

 

Finally got my car back with the Nouvalari Sports muffler!! So now my set up is: 2.7 with rebuilt headers and OEM shield, Kreissieg Y-pipe, primary cats still in place and then the Nouvalari.

I think you're right on the volume.. with the Sports version, the drone from 1000-2500 RPM is just exactly as loud as it can be without getting annoying. The sound overall has a great balance through the range and a nice reverberation around 5k. With the Y-pipe cat delete there is a noticeable change when the valve opens but not dramatic at all. Top end in tunnels is amazing of course

Happy with my setup now, but the geometry leaves a bit to be desired. The muffler is touching the bell housing so plan to take the airboxes off again and see if I can wiggle things around and get some insulation in between.

 

We need pics of that spiral Y-Pipe !!

 

Here it is! Definitely feels more responsive when the valve is open. It's ceramic coated but actually measures hotter than the OEM configuration. I think I just reduced the heat emission by painting it black.

Might be getting new headers eventually, so looking forward to your impressions of the Larini stuff -- but for now next items to worry about will be refinishing my wheels and getting new tires etc.

 

Looks epic man! First time seeing it on a car. Worth it?

 

“Indispensable for F1 Sound Reproduction”
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Ooooo please post a sound clip with that Y-pipe!
Sorry I missed the "mention" from above back in Sept. I don't think it drones at all at low RPM with the bypass closed. I have a Capristo bypass valve which works opposite to OEM so you can "wire it open" just by pulling the vacuum line on the top. I tried that and it is obnoxious and unbearable at low RPMs.....literally headache inducing, so for me, the bypass is critical to have operational. The only thing I've noticed is that it isn't quite as loud as I'd like with the bypass open. I am seriously considering the Nouvalari Y-pipe to see if it gives me a little more volume/scream up top.

 

Anyone have pics of the Nouvalari Y-pipe? I can't seem to find any.

 

I have...


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the temptation is strong...

 

I might be interested, if the price is right. I don't have permission to DM it seems. DM me.

 

So what are you switching it out with? Are you going Tubi for everything? Let us know how things compare.

 

Nice vid of Nouvalari system.

Still missing that extra sharp F1 wail in the Capristo.

 

Absolutely beautiful car btw. I’ve watched quite a few of your vids.

 

dude - you live near where i grew up. love the bronx river when its empty

 

tubi evolution is the end all!