I'm on a quest to increase the hp and mpg at the same time. I purchased a module (RVP) from ebay that claims to be able to increase hp by +50 and mpg by + 10 - 15 by connecting this device to the Intake Air Temperature Sensor or the Coolant Temperature Sensor. Where can are these be located on the GS 430 and is it a good idea to add this to my lexus?
I filled up last week at 145,458 and ran it completely dry 146,020, which is 562 and I put 16.176 in the tank. So, it currently is running around 35 mpg (alot of highway miles) with new oil change, tire rotations, fuel sys cleaner, and K&N air filter. Trying to make more hybrid and keep power...lol...gas is rough at $3.80/gallon.
