View Single Post
Old 08-02-2002, 06:47 PM
public enemy
Posts: n/a
The kind of "additive" that you need is to have your engine and your catalyst really warmed up before the test. Take the car for a quik spin (keep the rpm in the medium range) and then take it for a test. That should let a marginal car pass. If it still does not, then your car has a problem that needs to be fixed and no additive in this world will cure that.
Reply With Quote