HappyCow OBD2 Plug and Drive OBDII Performance Chip Tuning Box for for Benzine Cars Nitro OBD2 Gasoline Car Fuel Optimization Yellow J#

Does it work? I don’t know exactly, but it keeps the lean condition come from coming back. This was my last alternative after smoke checking for vacuum leaks and changing a few old sensors.

Work's Great

Don't waste your money it's not truth you buy only funny lights

I first put one on my 1997 Dakota 5.2 ltr and gained over two miles per gallon. I put another on my 2011 Compass 4 cyl and increased gas mileage by three miles per gallon.Both vehicles have much more zip and power. I will be putting another on our 1999 Sebring convertible as well.awesome little thing!

It works. I can feel the difference.