At 03:44 PM 11/16/00 US/Central, you wrote:
>14.7:1 is not a "Pinging" range
I have read a few efi articles from various media sources that says
the opposite. That's why I mentioned it in the previous post. As
for myself personally, I don't know.
>...from what i've seen on a Dyno with the A/F Meter hooked up (on three
Dakota's)
>we are hitting 15.5-15.7:1 in some cases...that in conjunction with the
40+ degrees
>of timing in before 3000rpm is a major factor in the pinging problem.
Just wondering how this works on the dyno. Do they use a wide band O2 sensor
in their setup? Our O2 sensors are narrow band and don't have the resolution
to detect much either way beyond 14.7.
>Ideal for performance is 12.3-12.6:1 (12.5:1 being the norm for "Best
>Performance".)
This is the range that I've seen as well but I've also read 13.x:1
as well.
Bob. Burlington, Ont., Canada.
'97 Dakota CC, 5.2L, 4x2, 3.92 SG, auto., 4265 lb.
Dyno: 231.2 rwhp 340.0 lb-ft rw torque
PB: 14.737 @ 91.75 9.364 @ 72.95
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