Reviewed By Stuart B (Youngsville, NC) Reviewed for a 2007 Chevy Impala —7/24/2019 6:18 AM
Have been driving with this for a little over a month now and it works. All 8 cylinders all the time, no cycling back and forth between 4 to 8. Sounds better with my Impala SS also because with a performance exhaust when it cycled to 4 it sounded like crap. Also I get at least the same or a little better MPG with this. Plug n play easy.