I'm kinda new at this but I have been seeing trucks parked a gas stations with the turbo howling like it's the exhaust brake. I was just wondering is this is what is causing it because I tried it on mine and nothing. And it's a 12 and I have seen 4th gens doing.
But how dOes it come on when you are out of the truck at normal idle? I have also seen videos in YouTube like this and was wondering how to do it. With my eb on and parked there is no difference in the exhaust.
It wouldn't be able to come on when outside of the truck, that I'm not sure unless they were in the truck, turned it on then got out. With my truck if the EB is on and I set my idel high it does make the EB significantly louder but if the idle is low you don't hear anything. As for others that you hear they might just have a CAI or aftermarket exhaust which is allowing their truck to roar a bit louder than stock. That's all I can think of but again, I could be wrong.
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