You can do a search at the bottom of this forum using boolean logic such as "injectors AND testing" and get a lot of good info. I'm pretty sure that when i was having mine tested someone posted the correct pop-off with the variance allowance.
Sorry but my memory is really bad about these kinds of specs since I never write them down... Must be getting old?
Oh, BTW - if you get the specs defined then there are a lot of folks here that would probably help you pay for that pop tester..
