Got the 2002 TUNDY 2WD ...
Does the Performance Chip really increase MPG & work properly?
Are there any drawbacks to the chip?
Does the chip effect the overdrive?
I'm getting 16-18 MPG in town
& recently got 21 and change on the big road
I was impressed to get to 21 MPG with the overdrive.

Does the Performance Chip really increase MPG & work properly?
Are there any drawbacks to the chip?
Does the chip effect the overdrive?
I'm getting 16-18 MPG in town
& recently got 21 and change on the big road
I was impressed to get to 21 MPG with the overdrive.