camarokiller

I'm using NepTune, but this is more of a basic Tuning question. I am tuning my Naturally Aspirated H22 and need to set Target Lambda values across the RPM range. Going by the HONDATA article Tech - Wideband tuning it says I should set the mBar columns 0-500 at 14.7, set mBar 750-1000 to 12.94, and set mBar 1250-3000 at 12.50. I'm going to assume these are for turbo, not NA since 12.94 and 12.5 seem way too rich for a NA tune. What are good target Lambda values to use, and how would I figure this out? Unfortunately I do not have access to a dyno, otherwise I would simply keep leaning it out over several runs and find where the power tapers off. Any suggestions?

Thanks.

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~Matt

http://www.cardomain.com/ride/2928232
Intake: AEM V2 TB: 68mm ProProducts IM: Euro R IM Insulator Gasket: Hondata Header: Hytech knock off with 2.5 collector, ceramic coated Cat: Vibrant 2.5" SS Exhaust: 2.5" SS w/ Magnaflow mufflers Tuning: NepTune RTP w/ Wideband Underdrive Pullies: AEM