yeah i just got my car dynoed and it makes 395hp and 370tq.my afr is 13 straight across. i want to put a hundred shot on do i need to take some timing out or can i just leave it like it is. and will i need to upgrade the fuel system

 

What mods do you have? Computer tuning?

 

a 01 ss 6 speed ls6 intake ms3 cam s3 throttle body blackwing lid pacesetter long tube tsp ory

 

and dyno tune afr 13 across

 

If they added any timing in the tune I would suggest retarding a few degrees. Since you have a cam I'd also run an upgraded fuel pump, like the Racetronix plug and play system.

Matt