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2slow240sx
05-06-2005, 09:35 AM
I'm boggled.

I know that I need to use a wideband O2 sensor, but here's what I'm trying to figure out.

Here's the setup:

KA24DET
TD04H-13C (5psi)
FMIC (6x30x3)
370cc
255lph
stock MAF
SAFC2
stock ECU

The SAFC2 hi throttle is set on 22% from 2800rpm up.

I pull the plugs after about a 2 mile test run with various throttle loads and I see carbon (black) around the base area of the plug (metal ring outside the electrode) and the tip of the plug (not electrode, but the tip) is white.

Help me figure out why it's not turning brown?

Thanks.

cosmoworks
05-06-2005, 11:44 AM
Here's a good example of reading plugs:
http://www.pdm-racing.com/features/plugs.html

What are your A/F ratios?

-Cosmo