They are amazing, deep tone down low and screams above 3000 rpm with a minuscule amount of drone plus a noticeable gain in power coming from the OEM HR cats. The only downside is that they are currently the lowest part of my car and they scrape sometimes when going over speed bumps (for reference my car is on lowered springs).

These are amazing for getting rid of Rasp! Car sounds amazing at low rpm and keeps a deep Note. only reason i dont give them a 5 is because they do sit a bit low...

Il son super bien et il on un son incroyable l’ajustement est parfais et non il son pas plus bas que le reste de la voiture je recommande fortement à tous ceux qui veule plus de puissance et un son incroyable au dessu de 4000 rpm wow