Quote:
Originally Posted by oil pan 4
Gas or turbodiesel?
|
My car is gas, but I was wondering from a general perspective as well.
I get the concept of the engine working to push the exhaust out, but legality aside, is there a length that is necessary for best efficiency to keep some back pressure (which I believe is necessary to have some), but not be so long that the engine has to work more than necessary to exhaust the gases. I assume it is based on engine size/power, but is there a generic rule of thumb?
Also, no inspection in California, just smog check.