I think my point was missed from the start. Obviously, you're not gonna gain any appreciable HP's on doubling your exhaust tips alone. Any car enthusiast knows that. Does it look sporty?? Absolutely!! That's why I could not see an RX with dual exhaust let alone 4 exhaust tips. It's just way out of character, I think it's plain funny. By the way, Lexus is not the only brand that markets dual exhaust to potray power and sportyness. ES350 6.8s to 60mph is sporty enough, dual exhaust nicely done...very nice to look at. I love my RX330, it's luxurious and comfortable. I would never customize my car and take it out of it's inherent character. But this is just my opinion. Peace!!