OK, I've heard this both ways now. Time to ask wisdom.net
What will happen if I fit a less restrictive exhaust to my car?
(1) My cats are currently plugged up (restrictive exhaust). That means
some of the exhaust gases remain in the cylinders thus diluting the
air/fuel mix and the car runs too lean. Put on a more restrictive
exhaust, your car will run leaner. Thus, putting on a less restrictive
exhaust and the car will run richer??
(2) Better scavenging (is that spelled right?) so the car will
run leaner with a less restrictive exhaust (no further explanation
given).
Help! Which is right? Is my leap of logic in (1) flawed somehow?
jim
|