more hp/ mpg - I have a 2009 silverado ltz z71 5.3l flex fuel I want to improve hp for pulling and mpg when im Not. What's the best route ...

crayy_crayyy · by **crayy_crayyy** [OP] » Feb 09 2015, 5:58am

I have a 2009 silverado ltz z71 5.3l flex fuel
I want to improve hp for pulling and mpg when im Not. What's the best route to take!??

Twitchee · by **Twitchee** » Feb 09 2015, 6:13am

Sounds like the best option for you is going to be looking at chipping it with the different modes. I know a lot of guys on here really recommend the diablo brand chips. i have one myself and have been impressed with it. Thats what i think you are going to hear a lot of on here. However, im sure there are certian other thinngs you could do with gearing and such as well.