Current mods are hks hi-power exhaust, UR hi-flow cat, UR 3"dp. HKS RS intake. Hallman boost controller set at about 22psi, dynoflashed. I believer this howling sound started after i installed the downpipe. It's a sound that just slightly howls when im cruisin at around 65 and up. But sometimes like today it really gets loud when i get on it like from gears 3rd and 4th. when installed the downpipe, instead of using a gasket between the dp and manifold, i used some high temp sealant, i forgot the name, but it was good stuff. Anyways anyone know what the howling is. ?

 

possably an exaust leak.. wait a few days then take ur exaust off and see if you can see black soot where it connects if you can you have a leak if not something else most likely

 

Howling is usually associated with the transfer case going out.

 

pritty sure transfer case makes noises at all speeds not just when its being steped on