craig09GT Posted December 20, 2008 Share Posted December 20, 2008 Really new to this so bear with me. I just logged a few runs and am looking at the AFRs. They appear to be really lean from what I can tell ranging from 11 to just over 20. From what I understand, this is not safe (and definitely not what Cobb indicates it should be according to the map notes) but I hope someone can share their thoughts on this. I have a 2009 limited with about 2000 miles on it, Cobb DP and running Cobb stage 2 93 map (with 94 octane fuel). Everything else is stock. I haven't noticed any knocking but I do hear some "fluttering" at coming from the engine/turbo. Seems to be when cruising at mid-throttle about 2600 RPM. I am planning a long trip in a couple days so is this safe? If no, can I run a different map in the meantime or something? Thanks Craig link to log: http://craigbuvyer.com/datalog6.csv Link to comment Share on other sites More sharing options...
Infamous1 Posted December 20, 2008 Share Posted December 20, 2008 The 20.35 AFR is fine, that is only displayed when you came off the throttle. If you aren't on the gas there is going to be a lower gas content . 20.35 just so happens to be the max the ECU will read from the sensor. You are fine. Link to comment Share on other sites More sharing options...
craig09GT Posted December 20, 2008 Author Share Posted December 20, 2008 Phew! Thanks. I am also trying to log IAM with my AP, is this possible or do I need to use Romraider or something? Are there other fields that the AP doesn't log that I should be looking at like FLKC and FBKC? Link to comment Share on other sites More sharing options...
f1anatic Posted December 22, 2008 Share Posted December 22, 2008 Yeah, 20.x AFR is normal when you are off the throttle. At WOT you want an 11.x or even 10.x Link to comment Share on other sites More sharing options...
RaGe Posted December 22, 2008 Share Posted December 22, 2008 10 is awful rich. idealy an 11.2 or 11. now i run a 10.2, but that BOV does it. OTM. Sorry I didn't mean to start a war which mainly forum people is all about . Link to comment Share on other sites More sharing options...
f1anatic Posted December 22, 2008 Share Posted December 22, 2008 10 is awful rich. idealy an 11.2 or 11. now i run a 10.2, but that BOV does it. I run 11 - damn car pc is worth for something...keeping an eye on AFR and Feed Back Knock Correction Link to comment Share on other sites More sharing options...
Infamous1 Posted December 22, 2008 Share Posted December 22, 2008 Unless you are monitoring AFR with a wideband, WOT readings are meaningless. Link to comment Share on other sites More sharing options...
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