GPI ss4 cam after tune 

Testing out these FI 12'S . Need to be tuned . . but I'm satisfied. . so far so good . The trunk we be completed in a couple months to match the...

4" straight pipe on my 05 GMC duramax DIRTRD$

13. 8 @104mph. On street tires and just bolt ons mind you.

Cleaning off the Northern Maine dew.

In the streets of mexico, racing a cammed out LS3 in my little 4. 6

Just a simple walk around the car. Flowmaster 40's with an h pipe. Before I installed the new exhast