Go to Youtube.com and listen to what "The Car Care Nut" has to say about the 3.4 twin turbo engine issues its. This guys know his stuff. I have an older Tundra 2000 has over 250K on it and runs like new except for the rattles after all these years of off road. Old Tundra just doesn't have the beans to pull my Elite 1 up hills like I want so I have a GX550 coming. Not affraid of the 3.4 twin turbo and it puts out decent power. All this new high tech without enough research and testing is what's causing all these issues now day. Manufactures need to test these new gagets more before releasing it to the public and using them as ginypigs.