I installed the GMPP cold air intake last night. But I am getting a wierd noise when the boost is dumped. It sounds like one of those old ooga horns on the early 1900s cars. I pulled the filter shroud off and it still does it. I checked the clearance around everything and that all looks good too. Almost sounds like the dump valve is chattering? Anyone else experience anything like this with air intakes? Not sure if this is a normal sound for these cars or not. I can run it up slightly and let off the gas so that it doesn't kick in the dump valve and the noise doesn't occur. I hear spool, then back pressure hiss. If I run it up into boost pretty good I get spool, dump hiss and OOGA.
WTH?
