Ok so I just got a 2010 Lexus gs350 with 7000 miles on it. It's my first Lexus. I love the look but I HATE the noise, it sounds like a turbo diesel. I have never experienced a car that was louder then this one. After doing some research on the net and taking it in for service I have come to the obvious conclusion that it's those darn direct injectors mixed with the timing chain. How if possible could I fix this. I don't care about the cost I just want a quiet cabin. Can I switch to a timing belt? Can I change the injector? If I cant find a solution under 3500 bucks this thing is going on swap a lease with a big incentive