I have a fully deleted 2012 dually running a JR ME on 1 above stock setting, 30HP I think. ARP 425 studs and sinister fuel rail race plug. 50k miles


In the last few weeks I have developed a popping noise when I hit 30lbs of boost according to the CTS. It doesn't matter if I get to it by mashing the throttle or slowly creeping up to it while towing. It sounds like the relief valve on a larger reciprocating air compressor if anyone is familiar with that sound. I have noticed no other ill effects of any kind, no check engine light, no issues with cooling, nothing. The sound seems to coming from the drivers side but I cant be positive.


Any one have any ideas?

 

Boost pressure leak, check all hose clamps. I use a special miller tool that hooks up to turbo. Use soapy water and check all connections.