Quote Originally Posted by mseitz24 View Post
Damn.

Mine has always done that and I assumed it was due to the straight through exhaust.

I’ll have to check the rear block off plate.

When I installed the kit I lost the original plug and bought a new one that didn't seem to fit great but I snugged it down anyway.
I don’t run the plug I have the egt probe in there but the squeal I had was real loud and sounded like it was coming from under the dash. It still whistles with the straight pipe.