Ok that's the first I've seen if this. Looks easy enough to build.
What is the benefit of this vs H or X? Does that long chamber interfere with the drive shaft? Pictures are sometimes deceiving.
Ok, Mad and I already talked this over but I thought I should explain myself.
The benefit is better exhaust scavenging like a 180 degree header, which 180 degree headers are impossible in some cars. The chamber allows the exhaust pulse to expand and create a low pressure area in the other collector and pull exhaust out of the header on the opposite side.
Back to back dyno sessions on my car showed that the tweak chamber made more power and torque than open header with 18 inch extensions.
It clears the driveshaft but is close. The chamber can be any length you like and whatever you need to fit the bill on your car. My Swinger has a 12 inch one.
