I have a Volant cai on my 07. Without the programmer, it has a nice rumble sound and it gave me a good mpg increase, but as soon as I hooked up the programmer with canned towing, I got a loud annoying drone between 1800-2500 rpms so I removed it. I was told that the custom tunes might fix the problem. When I did get my custom tunes, the drone is still there so I can't even use my cai because it is so loud and annoying. I love what the custom tunes have done for my truck but now I can't use my cai.
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