430 exhaust - something quieter than stock

This is interesting. I've never heard this complaint before.

Mine was a bit louder with the first generation manifolds but IMO was never too loud. Personally I like the setup.

Maybe you should take a ride in another 430 . Maybe there's a problem with yours.

 

You can close the valves permanently. Easy fix for about $300

 

You think you have problems!! don't swap out your manifolds for precat deleted ones, makes your stock F430 twice as loud!!!

 

You can buy track day mufflers - they are designed to run without valves and meet all track noise restrictions and hence are quieter.

 

I traded up to a 360 from my 348 partly due to the noise. No cats and aftermarket exhaust. My neighbors could hear me 8 miles away from my house. Some neighbors (based on the sound figured I was speeding) would call the police before I even reached them. There was not enough Excedrin to take a long ride in the car.

 

I can soooooo relate to this, my days of a sneaky spin out have long gone

 

I am not sure how this would be done honestly! My wife said she can only ride in my 360 with Challenge Stradale racing exhaust and no pre cats for about 20 minutes. Then we need to stop at a bar preferably to get a glass of wine and then she is good to go again for another 20 mins lol! I told her if we ever go on a longer ride together she will need to wear my Beats noise canceling headphones and she obliged! I have never heard of anyone wanting to decrease exhaust sound so this will be interesting!

 

Stock Muffler?

 

Just turn down your hearing aid device!!!!! We are talking fine music here!!!!! No need to have a radio on!!!!!

 

Ear plugs..... The little yellow foam ones.

 

Interesting problem. I wonder if there's a way to program the exhaust valves to stay closed until a higher RPM?

The stereo in my Scud never even comes on because for me, the exhaust note is pure euphoria. Interesting to hear the exact opposite preference.

 

The Forza exhaust controller has an option to manually force the exhaust bypass valves closed. Uses a manual switch that you install in passenger compartment. Using same switch you can force them open or set them to default (Normal) mode and have the car control them.

Steve

 

+1 agreed

 

AP Racing manifolds decat, rest is stock, professional db sound level meter only £10 on eBay, if you notice me hanging around your tailpipes in the next few weeks don't be alarmed lol
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That is not correct. The exhaust bypass valves on the car are there for sound abatement regulations ... especially in Europe where sound regulation are tied to vehicle speed. It allows the manufacturer to install an exhaust that has two modes of sound level. The quite mode (exhaust bypass valves closed) for lower engine RPM and vehicle speed. Which is typical in urban areas. The loud mode (valves open) for high engine RPM and vehicle speed, which is typical on highways away from residential areas.

There is also a practical application beyond noise abatement ... and that is to allow variation in the exhaust system back-pressure. With the bypass valves closed, the back pressure would be, in theory, higher ... which is desirable to increase torque at lower engine RPM. When the bypass valves are open, the pressure would be, again in theory, be lower which is desirable to increase horse power at higher engine RPM. That is the theory. In practice, the difference is so slight as to be negligible. Road car's exhaust systems are not manufactured to that degree of detail. Racing cars typically do not employ bypass valves ... their exhaust systems are designed specifically for the conditions that will be driven.

I have not personally tested if the torque vs HP curve is affected by forcing the valves open or closed, but based on published documents that I have read, the difference is only noticeable on a dynamometer.

On road going Ferrari's, if you force the valves always open, nothing bad will happen, unless the local constable pulls you over for your car being too loud. If you force the valves always closed, nothing bad will happen either.

Regards,

Steve

 

Trade the car for a 991 Porsche Turbo. It will be faster and quieter.

 

Not sure if this applies to 430s, but my Tubi exhaust for the 360 had no valves, it was slighly louder than stock at low RPMs but definitely quieter through the high range. It was a very nice exhaust and not at all obnoxious. Maybe they had the same design for the 430?
I now have the OEM exhaust and that is LOUD but I love it

 

I believe that Tubi for the F430 does not have valves. Others do, e.g., Capristo. The fact that some after market exhaust systems do not have valves, reinforces the argument about forcing the exhaust valves always open. Obviously, Tubi does not find them necessary and owners of Ferrari's with Tubi valveless systems have not reported problems that I have heard about.

Steve

 

Bad idea. You might shut out the engine noise, but you will also shut out all the other noises around you. Some of these makes for safe driving. Horns, sirens, an engine revving so you notice a car you might have overlooked and what not. It's like very loud music in the car - a bad and dangerous idea.

 

I think the F430 is quiet, in fact way too quiet in stock form. OP maybe it would be worth looking at a more GT type car?