I have a GXP with the GMPP upgrade in Speedway. It is throwing a P2178 code and Fuel System Monitor fail with values as low as 0.72068. I have logged a lot of data, but have not been able to identify a smoking gun. In the past, I have dealt with the folks at Ed Martin. After my last visit there, I no longer trust them. So, I am looking for a trustworthy mechanic in the Indy area that could deal with my car. Any ideas?
My mechanic is in Lafayette. My Solstice is the only one he has seen, but he has done competent work on my vehicles for the last 40 years. The place is Custom Dyno Tune Up on Earl Avenue in Lafayette, IN. That would be a 1 1/2 hour drive from Speedway.