I installed a brand new ad2 4g a few months ago chasing a fuel problem. It wasn't the fix but it was a great excuse to justify the expense...
Anyway, since then it just seems LOUD. I can hear it in the cab when idling, windows up and ac fan on medium. I'm deleted and 4" straight pipe on a LMM so it isn't real quiet when it idles. Why is the damn thing so loud? With the engine off and key in the run position you can hear the pump from 20' away from the truck.
I followed the instructions and I primed the system with the stock primer bulb before running it. Still on the first set of filters on the AD too.
Anyway, since then it just seems LOUD. I can hear it in the cab when idling, windows up and ac fan on medium. I'm deleted and 4" straight pipe on a LMM so it isn't real quiet when it idles. Why is the damn thing so loud? With the engine off and key in the run position you can hear the pump from 20' away from the truck.
I followed the instructions and I primed the system with the stock primer bulb before running it. Still on the first set of filters on the AD too.