My new MG16 did not seem to perform very well for a .15 engine so I tried changing out the stock exhaust to see if that would help. I found an old exhaust manifold from a CEN Sedan (G70322) that fit in the chassis and added a one piece CD3 pipe. The original can type exhaust system had major oil leaks because there was no sealing in the pipe chamber. I took it to a local test track to see if these changes would help. What I found was the power almost doubled from the same engine. Now the MG16 is fun to drive.