I have a 01 gmc ext cab 4x4. After market air in take, suncoast 3 and putting on 4inch turbo back no muffler. I have on motometals 285 x 70 x 17 toyo opencountry ats. I have a bullydog and am wondering if a efi live will give me more hp. Also can i tune the efi for more miles per gallon. I am new to this and wanting to learn how to make my max a bad ass. I work with ford guys. How much is the efi. Thanks for the info.

Uhh....yeah. EFILive can give you a TON more power than a Bully Dog. Better mileage too. That's the short answer. Check out efilive.com.

Bully Dog is kinda like a part you install on your truck and EFILive is a tool that you use to work on your truck.

You can make more HP than a Bully Dog and with better driveability. Or you can write a mileage tune. I'll be happy to get you started.

Don't forget about tranny upgrades if your going crazy. :D

and am wondering if efi live will give me more hp. Also can i tune the efi for more miles per gallon.

You'll be able to read and clear trouble codes, data log what your engine is doing/asking for and fine tune accordingly, and tune all supported vehicles...The '02 and '05 in my signature make just under 500 rwhp and get 19 MPG @ 80 MPH...You will not be disappointed...