I have an engine knock with mild acceleration when warm, with no knock on heavy acceleration.  I changed the spark plugs and tryed injector treatment.  No engine code light.
The car has 70k miles.  Any ideas

I just purchased an RX 400h and would love to route its signal directly into
the sound system (not through the casette player). Are there aftermarket
products that allow this? The Lexus dealer didn't know much about this.

http://www.lextasy.com/
We ordered from these people and never got anything. Has anyone ever
ordered from them?
Thank You