How To Get That F1 Sound

Is the Sline on a 360 that much different to the F430? As i am yet to experience any drone on my F430, must admit maybe its the difference between a coupe in your situation and my spider? Admittedly no headers or cats done yet (still in the planning).

 

I have a scud with S-line x-pipe. On stock cats, there wasn’t really any drone and while the car was loud, I didn’t think it was much louder than stock with the valves open. Once I added 200 cell cats though, the exhaust volume was much louder and the there is a bit of drone between 3-4k rpm. With the 200 cell cats, you can hear the trumpeting on decel which was not present on the stock cats.

 

Must be different then.

 

I just think the 360 and the 430 are so far apart in their sound, pitch, and tone in general. Whether it be stock system, aftermarket system, or any combination thereof. The five valve versus the four valve motor is just a different animal, from an aural standpoint. You really can’t use one as a basis of comparison for the other when talking about exhaust systems, in my opinion.

 

100 cell cats (Kline) on my f430 and I don’t notice any smell FWIW

 

The high flow cat thing is a person by person basis. Apparently some people are sensitive to it, and I am one of those people. It sucks. Trust me, I wish I wasn't. I want Kline inconel cats BAD.

Mike

 

To add some aural context to this thread, here are a few short clips of my latest setup. One with three stationary revs with valves closed, then with valves open. Another with a short 1-2 flyby in each direction. Unfortunately I didn’t have enough space to rev out 2nd gear in either direction. A third onboard video of a few pulls from 1-2 and 2-3. The driving video was taken the day after the install. Per Kline, the exhaust is shipped in an unannealed state, and must be heat cycled on the car to harden the Inconel and help the material develop its full potential of sound. I can attest to this, as the sound has gotten better over the past week and miles. It has a much more melodic tune in the lower RPMs, and has developed a fantastic metallic “zing” in the upper RPMs! I’ll capture another video of it as it develops. This latest setup is Tubi headers, sport cats (brand unknown) and Kline Inconel catback with Forza Componenti valve controller.

 

Practically the same setup as me. It sounds great in the videos, but still, you just can’t capture that special sound Inconel makes. Seriously have to hear it in person. I bet you’ll agree. Nice car! Enjoy!

 

I'll throw in my .02 on this. Of course the F355 and 360 are similar engine architecture.

I believe the high pitched/F1 sound on F355 is from divorcing the flow after the banks mix together in the y-pipe from the main muffler.

For example, on an F355 you have the primary ex path that leads to the muffler. The secondary path leads to a y pipe and single bypass valve. That bypass valve exits to the top of the muffler and the most high pitched setups, that inlet on the muffler is just a Y or T internally straight to the tips and does not mix with the internals of the muffler.

So for the 360, on the Kline for example, the tubes to the muffler inlet are -after- the x-pipe. So when the valves open it's not purely putting that bank to bank mixed exhaust to the tips, it's still open to the muffler.

In my opinion, it would be much more "F1" sounding if closer emulating the F355 layout. So for muffler inlets should connect-before- the x-pipe rather than after it.

So when valves open it's pure high velocity to the tips rather than dulled by the main muffler.

 

It’s nice the way Kline does it because the pitch is a nice high pitched xpipe sound if it goes through the muffler or not. Just loud or quiet. That’s nice. Also, the pitch is higher than SLine was, and SLine doesn’t even have a muffler. I think there’s something else to it that makes the 355 sound like the 355.

 

You need to increase the flow out. Keeping the cats will prevent that, full stop. However, 100/200 cell would help along with an X-pipe. You will also need to change the headers to a race header. Here is an instagram video of the best sounding F430 with all those mods I listed, but it is a straight pipe (no cats). A 360 with these changes should sound even better because of the 5 vs. 4 valve.

I'd be surprised if you could get away with having a set up like this in the UK. It can produce up to 130 dbs at 20 feet when in high revs. This set up would be illegal in much of the US.

https://www.instagram.com/p/CPGITkgJm02/?hl=en

 

The only insight I can give is that not all aftermarket products are created equal. My car came with hi flow cats that the previous owner had bought and installed by what I believe to be a reputable shop in the US. While the cats themselves have no physical markings or labeling on them, the invoice only states “High Flow Cat System for 360”, for a price of $1,953. This was back in 2019. At the same time, they also installed Tubi Competition Insulated headers.The cats don’t look like anything I’ve seen for sale by Tubi, but I suspect for under 2K, they are not. The main issue is that they don’t fit like the OEM cats. The left one appeared to be longer than the OEM one, to the point where I can never get any cat back to sit even in the car (I’ve had 4 different ones now), fore and aft, left v right. The left side always sticks out 1/2-3/4” further. You can even see it in the way the muffler sits. I even cut off half an inch from the tail section during my recent Kline install, thinking the tail was too long and was bottoming out inside the cat-back. I don’t know where else the issue lies, but I’ve tried multiple rotational adjustments of each cat, pushing/pulling, leveraging, and fighting with everything to get each catback to sit evenly, but it just won’t with these cats. As soon as I put the OEM cats back on, the catback sits perfectly even first try. Frustrating, but I don’t like the way the stock cats sound, so I live with the uneven fitment. I’d also rather have it even left to right than fore and aft. Left to right maladjustment can lead to rattling and vibrating against the mesh grilles in the exhaust outlet.
This whole long-winded story is to say that yes, spending more money might be worth it for the cats just due to fit and finish of the cats and how the actually work in the car.

 

Sport cats with valves closed are entirely docile and disappear into the background. Valves open, all depends on the catback after that. My Capristo twin sound was great for the reason. Valved for quiet driving, and roaring with valves open. Incidentally, it happens to be for sale in the Classifieds right now!

 

In my experience, they did. I was disappointed the first day, and switched back to sport cats the second day. Much better.
If I didn’t already have some, I probably would’ve sprung for Klines Inconel Cats, just to get more Inconel tone and pitch!

 

I want to do this on my f430. Everything is stock on my car but I want to throw the sline on it. Is it way better than stock? Will it change the pitch and give me more f1 vibe? Thx.

 

It’s the cats. Trust me.

 

To me, it sounds a million times better than the stock exhaust does.

see the following video to download, that is my car with stock headers and cat, just the Sline exhaust

 

Alright I’m in lol. Did you just get the non valves sline?

 

Obviously, why would i want it to be quieter at times?? i want it to be as loud as possible at all times i dont drive it that much (but still more than 90% of other owners it seems looking at mileages) so the neighbors will just have to suck it up just like i need to hear their dogs barking and kids crying every now and then..

 

Well this morning was the first cold start on my "new to me" Capristo Sound 3" exhaust. I had this installed yesterday on my Euro-spec 360, which has the factory shielded headers (no pre-cats).

I LOVE IT!!!! It literally has changed my life lol. Totally different driving experience. I see why some say it's too much, especially on a euro car. It's very loud and when you approach any outdoor restaurant during rush hour, it's entertaining to watch everyone stop eating, stand up and try to see what's coming up the street lol. But, now I'm forced to start the car with the garage door closed, then open it after the engine calms down. The cold start is very loud - think Fabspeed Aventador loud. I'm not close to kidding. Neighbors have every right to complain about this one lol.