Received a Hummer
I am going to buy a programmer for my truck. I have an 07 classic duramax with the allison it's an LBZ engine. I am looking at edge stuff...is that the way to go? Or is there a better one? And also...do I have to replace my exhaust? Or will the chip run me fine with a stock exhaust? I'm trying to get better gas mileage...so I'm keeping stock tires. And is this stuff hard to install or can I do it myself?