13.8 MPG! wow....

[wa04compg]

A rear o2 with no cat? Doesn't make sense

Sent from my LS670 using Tapatalk 2

If you read this thread it might make sense!
http://www.grandprixforums.net/remov...know-7092.html

[darkhorizon]

If you read this thread it might make sense!
http://www.grandprixforums.net/remov...know-7092.html

Series3 do it differently, and it doesnt really hurt as bad. Was on my list of things to eliminate when I tuned it (but he is too poor to drive the 20 miles down here).