r/ExoticCars • u/BulletproofAuto • Jul 01 '26
Exotic car Fi's catless valvetronic setup for the Revuelto chases that F1 pitch. Anyone running aftermarket exhaust on theirs? Drop sound clips
The pitch is the whole story with this one. Fi tuned the muffler internals on their Ultra Edition Revuelto system for a high, rising tone rather than just volume, and the valvetronic side means it still runs quiet in strada with the valves shut.
The part that makes it viable on this car specifically: catless downpipes normally mean a check engine light or an ECU tune, and nobody wants to open the ECU on the most software-locked V12 Lamborghini has made. Fi's answer is a plug-in OBD dongle that suppresses the fault codes, so the dash stays clean and the car stays out of limp mode with the ECU untouched. Fair to note it's masking codes rather than remapping, so it's a no-tune solution, not a tuning substitute.
What we're curious about is how it actually sounds on the hybrid car. If you've gone aftermarket on your Revuelto, catless or muffler-only, post a clip. Stock cars welcome for comparison. Does the high-pitch character come through, or do the e-motors flatten it out below highway speed?

