Quote:
Originally Posted by XfireZ51
With the recent results I've gotten at the track and on the dyno, I have started looking for ways I can optimize tune for WOT. I heard about doing "plug cuts" before but never took the time. This time I did. Very revealing.
Looks like its running "a bit" rich and that I have some fuel to take out. Next step is hooking up my ZT-2 at the collector. My suspicion is that the WB at the dyno is on the lean side because its at the tailpipe. Using my WB at the collector should give me a more accurate reading. Attached
is a pic of an NGK BKR7E plug on the left and an AC Delco 41-602 on the right.
|
Interesting. I've never cut plugs before, but am very familiar w/ the concept of reading plugs. So...a Q for U:
Were either of those plugs pulled immediately after a WOT run, or was there a period of normal (closed loop) fueling and/or a shut-down and cool down and a restart? Point is, plug reading to determine fuel rich/lean, etc, is pretty quickly compromised by conditions outside those being tested - hence my question.
P.