Hi Jim,
Noticed you bought up the subject of smog checks and rear O2 sensor. At the moment experiencing issues getting car to pass a smog check. Currently have long tubes and high flow cats. Tuner turned off o2 sensors after a CEL popped up. Tried to smog recently with no luck. After a tune...
There are some smaller shops throughout southern Nevada that do good work. They’re not necessarily speed or performance shops. I’ve built a formidable S550 using multiple shops for various mods, and not just one. Mustang Manny aka MPR Performance claims to be a full service performance speed...