575 aftermarket exhaust advice required.

These are the go to systems for Maranello's, made by an owner with passion and to a very high quality.

https://www.fiammenghiitalia.com/en/product-category/ferrari-en/ferrari-575m-maranello-575-superamerica-en/

 

Hi Paul. There are many ways to get some more «life» in your 575M, from quite inexpencive to quite expencive. I changed to Hyperflow sport catalyzers on my 550. It was a little increase in sound, but not much. Normally, you want it to be a bit louder. But what is most important is the sound quality. More dB is not always better. A reasonable upgrade would be sport cats or even take them off. You still have 4 pre-cats in your 3-1 headers. How big is your budget? We had a member here who have made a superb full exhaust system (still modular, so each section can be changed out with your original exhaust one part at a time). If you search one of the latest exhaust threads, you will find it. Good luck.

 

You will get more results out of changing your mufflers than changing your cats if you are after better sound. Even with OEM precats (4 of them) and primary cats, my old Novitec Super Sports without valves would wake the dead. Swapped it for an HGTC exhaust, now with Fabio's headers.

Before doing anything, you might just change your exhaust bypass valves to be open all the time and see if you like it. Easy to do just by running the long vacuum line directly to the bypass valve T to the actual valves and plugging both sides of the bypass valve solenoid with the extra piece of hose in a loop. This will increase the sound significantly and give you some popping on downshifts when in Sport.

 

Didn't early cars have a central silencer that can be deleted ? Someone like PDGough in Nottingham may be able to help

Would you consider adding your car to Taz's register which as I recall is updated from the 575 Technical Thread at the top if it is not already there ?

 

I agree with Taz, open the valves and see what you like.

The 550/575 exhaust system is SEVERELY restricted from the factory. It's 2.25" and necked down to 2" in sections. Bumping it to a smooth 2.5" (or 3") will net significant power and sound gains. But you need a good fabricator to perform the work. Most of the aftermarket options do not address the restrictions and merely address the mufflers.

 

Ahh you bought Finn's car.

That looked tidy. He offered it to me but I'm just not a fan of Black cars.

https://collectingcars.com/for-sale/2003-ferrari-575m-maranello

 

Paul- I have not updated my 575 list for quite a while. I started it to give me some idea of the serial numbers (last 6 of VIN) that went with updates to the 575M. Once I had enough info for that, I stopped updating it. I would like one day to find the 575M with Assembly Number 52556, though. It was between 135171 and 135186.

 

If you click the link in my reply above it takes you to the listing on Collecting Cars on which it was advertised.

Final bid was £61,000 (which would have been £64,660 with fees) but it didn't meet reserve.

It looked like a tidy car from the photographs.

 

Paul, I bought my 575 with Tubi 575 back boxes and the original back boxes tidily packed in cartons. I have never been tempted to take them out.

I don’t think they add any/much power, but they sound good. They are also a few kg lighter each, which may help handling behind the back axle.

A deep thrum on idle, howl on acceleration, and quiet at motorway cruise speeds. Not as quiet at cruise as the factory setup, but no drone and not intrusive. On part throttle burbling through urban areas, it sounds lovely, deep throated and big, with a drama the factory setup lacks completely. (You can blame Luca for that; contrast with the F512M which has an amazing exhaust intake gargle but was too loud for the markets he wanted to reach out to.)

the Tubi back boxes are a reliable and cost effective option, though they do not add any pops and cracks and I haven’t tested the other options. Fabio’s exhaust seems to be the connoisseur option, noise sounds wonderful on the videos though higher pitched and more old F1 than simple Tubi back boxes. His exhaust also apparently releases a lot of power.

 

i do not know anything about after market exhaust differences.....
but i will concur with tazz on this ....bypassing the valves allows you to use your existing exhaust system, and it will be significantly louder and more aggressive sounding.
my 430 had this done by the previous owner, and it sounds great. people always ask me what kind of exhaust system i put on and i tell them stock with bypass and they cant believe it.

as a cheap test of how much louder you can handle, try this first.

 

Paul- Next step would be to get rid of the center muffler/resonator if she has an AN earlier than 51797, when straight center pipes started to be fitted at the factory. Straight pipes, an X-pipe, or Fabio's H-pipe are good choices, with the straight pipes likely to cause some resonance.

You probably need a second opinion if you are actually partially deaf. Deafness more likely caused by loud music in headsets than a Fiat exhaust.

 

Paul, I also have Tubi back boxes that I got from Roger at Kent High Performance Cars. I had previously messed around with a few other configurations, but I found them to either be too loud or too "drony". Tubis that I have don't drone and sound really nice, may be worth a look.

 

Taz with your permission would you mind if I carried on your great work and started maintaining the 575 list? If so Ill add this one to the list you shared with me and continue to maintain and update this over time

 

Roger has just set up my 575 alignment to his fast road spec. I am excited to drive it, likely picking it up in a couple of weeks.

I think the Tubi back boxes are great and have not been tempted to change, but as I say have not heard many of the alternatives in real life. I don’t think the nature of the Maranellos suits a super loud exhaust but it’s horses for courses.

 

Ed- Feel free. Here is the latest version. I updated it 272 times, looks like. Note I only included 575Ms and Superamericas that I had the serial number, assembly number, shifter type, and whether she had FHP or HGTC.

 

@tazandjan - Terry, many thanks for this (and many other) helpful bits of advice. I have to replace the vacuum line anyway on mine, so I shared this suggestion with my mechanic and we are doing it. Gonna try it out and see how it sounds! Thanks, Steve