2013 silverado HD gasser makes solid gains

[@tattedtex77]

It's pretty cool watching my truck thank you guys for everything! Gilpen Machine Built!

[@Chevywhoopwhoop]

I have a 2500hd 2011 6.0 Silverado
And runs just like that truck ! But straight pipes and a cia plus a tuner running 93!
I say it’s a 6.2 now lol

[@RACEALOTGARAGE]

Hell yea brother!

[@emilioleal8713]

I’m next , got some nice coming in !

[@RACEALOTGARAGE]

Can't wait!

[@swathdiver489]

Is this the shop in Port Saint Lucie?

[@Onedeepdrew]

This is Deep South texas

[@codysummerfield641]

Robstown texas

[@RACEALOTGARAGE]

DOWNSOUTH TEXAS