Juice Hypertech Stack

[lcaad1249]

Has anybody tried stacking the Juice/Attitude with a Hypertech? I'm helping out a buddy that had the Hypertech and wanted more. I found him the Juice/Attitude to try. He says that the smoke is unreal but can't tell much power difference.

The truck is otherwise completely stock. He's talking about getting a cold air kit and exhaust. I wasn't sure if a lift pump might be better money spent.

Any recomendations?

:thankyou2:

 

[lcaad1249]

Also this is on an '05 Duramax