Awesome facility and friendly service. The guys at underground are knowledgeable and experienced. They are very courteous and honest...found an issue and they called me in to show me. I really appreciated that honesty especially with so many horror...
Read more...2010 Cadillac CTS-V - bolt ons
547whp / 537tq @ 8.5psi
Mods include:
-ZL1 lid
-BB Cat Delete
-Airraid Intake
-Tuned Underground