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What AFRs Are You Getting?

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Old Oct 7, 2015 | 10:18 AM
  #21  
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Originally Posted by mmmposta
warm idles i sit at 12.7-13.8
That's your idle?

That's my WOT lol
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Old Oct 7, 2015 | 10:35 AM
  #22  
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Originally Posted by mmmposta
Mine is opposite of yours
10.8-12 WOT in boost
12-13.3 in cruising, very partial throttle, if im up cruising at 80mphs my AFR gauge reads 12's
warm idles i sit at 12.7-13.8
You're just uber rich across the board.
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Old Oct 7, 2015 | 11:12 AM
  #23  
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Originally Posted by mmmposta
Mine is opposite of yours
10.8-12 WOT in boost
12-13.3 in cruising, very partial throttle, if im up cruising at 80mphs my AFR gauge reads 12's
warm idles i sit at 12.7-13.8
You need to remove at least 10% fuel everywhere...
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Old Oct 8, 2015 | 01:17 AM
  #24  
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Originally Posted by Super Nintendo Chalmers
Originally Posted by mmmposta' timestamp='1444196230' post='23768397
warm idles i sit at 12.7-13.8
That's your idle?

That's my WOT lol

Originally Posted by yamahaSHO
Originally Posted by mmmposta' timestamp='1444196230' post='23768397
Mine is opposite of yours
10.8-12 WOT in boost
12-13.3 in cruising, very partial throttle, if im up cruising at 80mphs my AFR gauge reads 12's
warm idles i sit at 12.7-13.8
You're just uber rich across the board.

Originally Posted by JUSTINTHECOASTIE
Originally Posted by mmmposta' timestamp='1444196230' post='23768397
Mine is opposite of yours
10.8-12 WOT in boost
12-13.3 in cruising, very partial throttle, if im up cruising at 80mphs my AFR gauge reads 12's
warm idles i sit at 12.7-13.8
You need to remove at least 10% fuel everywhere...
Yeah, it actually just started happening last week, i was idling and cruising at 14.5ish...
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Old Oct 8, 2015 | 04:06 AM
  #25  
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Sounds like you were tuned when it was warm out and as it cooled off, you found the temperature compensations are off. O2 feedback may not be turned on as well.
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Old Oct 8, 2015 | 07:10 AM
  #26  
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Originally Posted by MBHs2k
Lots of newer cars run really lean while idling for MPG and emission purposes. Still your car is running pretty excessive IMO. 14s is where you need to be at when cruising. I would imagine at 15/16 the car would feel like the engine is hiccuping and stuttering as its trying to get more fuel.
Yeah, I think that's why the car feels like it's staggering around 3500RPM. I see the AFR jump up to mid 15s depending on how much throttle I'm giving it.

I'll have my tuner fix all of this. He's done good work in other areas of the car, so I'm hoping we can iron this out.
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Old Oct 8, 2015 | 08:17 AM
  #27  
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Should I be concerned when I see 18's? It only happens when I let off the throttle and coast. Tuned by Jeff at Evans. I'm assuming it jumps to 18 bc the delay in the wideband.
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Old Oct 8, 2015 | 08:32 AM
  #28  
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When you let off the throttle and engine brake (and between shifts) the injectors are cut off entirely. 18 might be the highest your WBO2 display registers.
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Old Oct 8, 2015 | 09:54 AM
  #29  
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Originally Posted by omarisramo
Should I be concerned when I see 18's? It only happens when I let off the throttle and coast. Tuned by Jeff at Evans. I'm assuming it jumps to 18 bc the delay in the wideband.
Yeah, normal.
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Old Oct 9, 2015 | 06:30 PM
  #30  
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Originally Posted by yamahaSHO
Sounds like you were tuned when it was warm out and as it cooled off, you found the temperature compensations are off. O2 feedback may not be turned on as well.


Turned O2 FB on, getting 10.8-12 WOT, 13.2-14.8 partial throttle and 14.5-15.1 at idle now.
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