The box is a heat shield to prevent heat soak. It doesn’t muffle the noise as much as you’d think.
MST v2 and eventuri are top of the line for performance and sound
You won’t always get a roar on start up.
I get a roar if my car has been running for a while or if it’s really cold out.
you can force a roar by downshifting at 4k rpm
Had the same issue. This is what I did.
Unbolt the exhaust closest to the downpipe to push it back for more wiggle room.
have the vband over the turbo to make things easier.
Install the dp over the 2 bolts first and hand tighten the screws a bit but still enough for wiggle room.
attach the dp...
Last night I pushed my start button to start the car and an officer was right next to me. The car went to 1k rpm and I quickly pressed it again to turn it off so my car wouldn’t pop next to them.
at this moment I thought “shiiiiit” since I have a 2020.
Once the officer left, I started the car...