Not sure what the deal is but the truck has always done this at idle. It will just sound normal and then it will sound like a hairdryer or something kicks on for about 15-20 seconds and then it will quit. Is this normal? What is it?:dunno:
yuppp normal, my dmax does it, its 3 in straight piped, if you go to a 5" like i have on my powerstroke you hear it a little less , but yeah perfectly normal!
nice I was wondering what that was!!! Thanks:thumb:
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