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Originally Posted by blinkfan
...So I purchased a Fog system which shoots 50psi into my air filter... I checked my air fuel ratio by checking the OBD2 data with a Snap On Modis.... 15 to 1 was the leanest the engine ran which is good...
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In a word, no.
15 to 1 A/F ratio while spraying = KABOOM.
So either you're talking about your A/F ratio when you're OFF the spray, which would be about right (stoich is 14.7 to 1) or you are spraying at part throttle (which also = KABOOM), or you are running WAAAAAAAAY lean on the spray (which will eventually = KABOOM).
Let's see some pics of this setup. Because a Fogger system is a direct-port system, which would attach AFTER your MAF, not before it. Color me skeptical.