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Sorry forgot, it was 17 to 1...
And yes at 20:1 it was running crappy...
And it seems even thou my wideband A/F readouts said it was running at 17:1 the injectors cycles were up from 8/10% to 14/16% at this setting.
So the CPM was adding fuel but staying at 17:1.. can not figure it out how these numbers work out...
Found that the post cat O2s were causing this and with a device cancling them out I could now run 17:1 and keep the injector duty cycle at 8/10%...but still could not see a better MPG even then.
I hope to retest that soon.
RIch
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