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Sideways the Seven 08-17-2013 01:23 PM

OTS Cobb Stage 2 map questions
Hey guys, I recently went Stage 2 and flashed the 91 map because I've heard of some concerns with running lean on the 93 map. I'm thinking of loading the 93 map just to see what the results are (I'm bored) and I'm wondering what to log to see if there are any issues and what the values should be.

P.S. I hooked up the AP to get a look at my AFRs, and noticed I swung to 11.1 on a few occasions at WOT and that seemed a bit rich.

Yes, yes, I'm sure they're noob questions, but I'm a noob at this.

subiestang 08-17-2013 02:22 PM

I'm curious as well. Like to know before I make the call. I thought these cars like the richer side....

iNVAR 08-18-2013 09:58 PM

Who told you it runs lean? The cobb maps are generally pretty rich. The reason people use the 91 map while pumping 93 is because of knock. The 2 gap in octane gives a safety margin.

11.1 isn't rich, and the O2 sensor won't read below that at WOT anyway so you have no idea how rich you're actually going without a WB.

Sideways the Seven 08-18-2013 10:40 PM

Ah, gotcha. It was merely speculation on my part.

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acumenhokie 08-19-2013 01:23 PM

Here is Cobb's list of the top 5 items to monitor and what they mean.

Search around here and other subaru forums as well as the vendor knowledge articles and you can teach yourself everything you need.

Sideways the Seven 08-19-2013 02:48 PM

Thanks! That's what I was looking for.

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Brett 08-19-2013 09:21 PM

i was running really lean on my cobb ots stage 2 map. (93 octane)

Sideways the Seven 08-19-2013 09:57 PM


Originally Posted by Brett (Post 4550307)
i was running really lean on my cobb ots stage 2 map. (93 octane)

Did you switch to the 91 map, or did you go pro tune?

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iNVAR 08-19-2013 09:58 PM

Running lean how? What did you do to determine that?

Brett 08-24-2013 05:55 AM

yeah, i got tuned last week. i found out my afr was really lean (i think 12.4) while it was on the dyno. i don't know how it was so lean, i'm running stock intake and stock catback.

iNVAR 08-24-2013 05:57 AM

I don't think that's the usual case. Probably just you.

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