Saturday, December 31, 2011

How to Increase gas mileage on 2011 2500HD Duramax 6.6?

As you mentioned that your GM 2500HD is of year 2011,this clears that its newest model ans under full warranty.If your vehicle is under warranty,then doing this on your own will void the warranty.To be honest their is not much you can do. On newer model vehicles every thing is controlled by programming chips.Since the chips and programmers get the best results they are recommended but they leave footprints that may impact warranty.
So the things you can do are change to a cold air intake, and maybe modify the exhaust slightly but even that is hard.
One trick is to get a second PCM and program it with the chip. Then if you do need warranty you switch the PCM out and the footprints are gone.
There are some companies which sell GF Performance Chip online.Also they claim,that warranty of your vehicle will not void.But they don't provide any kind of guarantee.But yes this GF Performance Chip are genuine in most cases.But still confirm before buying.

This details will help.Thanks.
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