What's up everybody? I tried using the search bar and I either get old threads with no clear answer or nothing at all. I got a warr throttle body (92mm) and its got the famous "whistle" through the IAC hole that eventually goes away when its warmed up, kinda getting annoyed with it. I've read I have to enlarge the IAC hole but can't get a clear answer as to which hole (front or back of the body) or to what extent of enlarging it. I'm hoping someone's experienced this and has some answers and could help out. Thank you for any help or direction!

 

I have a 102, albeit not WARR. I opened both holes up some and knocked down the edges so it flows "smoother".

Cut the whistle down some but still has a slight whistle. Procharger drowns it out though!

Hopefully someone with a warr can help a bit more. But figured I would share what I did

 

I appreciate the response. Were both edges sharp? Hey as long it was an improvement it works lol

 

yeah just "port" the harsh edges inside, its never gonna make no noise but you can quiet it down for sure

 

Thank you for the response. Hey I'll take a little improvement over none lol