She's finally in my garage!!!

Hard to tell when you mix and match. Ferrari changed the mufflers on the 575M when they went to straight pipes to ensure there was no resonance. Just changing to straight pipes and original early 575M mufflers can lead to resonance, but that does not bother some owners. The H pipes definitely cut down on resonance compared to straight pipes and some owners prefer the sound of the H-pipe or even an X pipe. X-pipes cost a small amount of HP, but some owners like the sound better. The original center resonators incorporate an X-pipe.

Exhaust sound is so personal, difficult to predict exactly what someone will like. I am running Fabio's headers, cats, an H-pipe, and SS over the axle pipe with OEM Superamerica HGTC mufflers. Will likely swap out the HGTC mufflers for Fabio's eventually. She sounds glorious now, with only a little cold resonance around 2500 rpm.

 

I have the Supersprint over the axle pipe on my 575 as well. I did not appreciate a change in the sound with them installed but they are *definitely* are less restrictive then the OEM over axle pipes. I had mine Cerakote coated as overkill too.

That said, I am pulling them and will be selling this summer if anyone is interested. I think I have like $850 total in them given the cerakote/shipping/etc. Not sure what I would sell them for but definitely would end up cheaper given no tariff/shipping overseas/etc, lol.

 

The birthing shots you first posted are the best pictures you'll ever take of your car.

Congratulations, Payman! Drive it in good health.

 

I took a video of a cold start, but can’t attach it here. If you PM me an email I can send it to you.

 

The 575 definitely needs more than a center resonator delete and rear valves opened. It does help but every V8 Ferrari and Maserati I’ve owned has sounded better.
How is that possible?
If I had to rank them I’d say the Maserati sounds best followed by a carbed 77 308 with Stebro exhaust tho it sounded better even with the Thermal Reactor. Then the NA California, a F.I. 308QV with Ansa and finally my 03 575M.
I’m surprised the number of cylinders and the Flat Plane Crank don’t have that much to do with sound.

 

There are 6-1 headers at the end of each of these individual journeys...

 

Congratulations, my brother the journey was long but so well worth it XO!!!!!!!!
Love you bro!!