[John Rogers]

The interior of a 914, while at speed is at a lower pressure than the engine compartment. I found this to be true when I blew my engine at 120 MPH or so on the CA Speedway front straight. I could not see for 20 seconds or so due to the oil smoke. Having said that, any opening that will let air/fumes from the engine compt into the interior needs to be plugged. That is why there are boots that cover the shift rod bushing, etc. Also make sure there are no exhaust leaks anywhere and that the muffler exits out the back. Good luck