HP problems..

[Gt5QuestinforU]

Hello! I was going to tune my viper SRT10 ACR 08 but I cant get more than 1000 HP out of it. How can people manage to get 1031 HP out of it? I have all the engines, exausts, filters and super charger. Thankful for all the help I can get!

 

[dr_slump]

Oil change and 200miles on the clock.

 

[Gt5QuestinforU]

Oil change and 200miles on the clock.

okey, thanks alot