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Well i got them second hand from a friend. Like i said i used the solenoid that was installed on them when i got them and got the same result. The solenoid that came with them has the same input and output size as is on the truck Stock, just wasnt sure if there was something before the solenoid...

Well switched the solenoids, just for a couple tests. And no difference, guess it has to have more than 110-120 psi. Seems kinda odd. Think its that or a cfm volume issue?

well the air horns came with a solenoid valve about the same size over all with the same size fittings ect but 12v, so I was able to just swap the old one on my stock horns to these. So it wasnt designed for much bigger of a supply line and I know its got plenty on psi behind it, and it did the...

Hey guys, tried the seach forum and couldnt find much. I Am replacing the stock air horns with larger 3 trumpet horns, ive test rigged them On the truck and it just doesnt seem that loud, is there a pressure regulator on the air horn system limiting it? It just doesnt seem to be blowin' like it...