.......I'm at a safe 11.8 AFR, w/ 7.5# boost...see signature for my set up. That has worked well for me. I am tuned with HP Tuners as well.
Afr# Help ??
Thread Starter
Instructor
Joined: Mar 2008
Posts: 124
Likes: 6
Afr# Help ??
Maggie 7.5 lbs, kooks long tube and x pipe with b@b prt and black wing intake. Every once in a great while engine light comes on and states lean left bank. I am having it tuned and looked over this week. What is or should be a safe number to run so I know I am not to lean? I would rather sacrifice a little power to make sure I am safe. Thanks for the help.
Thread Starter
Instructor
Joined: Mar 2008
Posts: 124
Likes: 6
Thanks a lot guys. Ok, I am at 12 from my last dyno run. I do it each and every spring and am due at the end of this week as I said. If I am still showing this number what should I look for? Possible vacum leak or bad 02 sensor? I did check the attatchments around my blackwing and I was able to tighten down a few of the clamps about 7 or 8 turns. Could this possibly throw a code? Did any of you guys have the tuner turn off the 2 back 02 and is this ok to do?
Thanks for the help.
Thanks for the help.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Thanks a lot guys. Ok, I am at 12 from my last dyno run. I do it each and every spring and am due at the end of this week as I said. If I am still showing this number what should I look for? Possible vacum leak or bad 02 sensor? I did check the attatchments around my blackwing and I was able to tighten down a few of the clamps about 7 or 8 turns. Could this possibly throw a code? Did any of you guys have the tuner turn off the 2 back 02 and is this ok to do?
Thanks for the help.
Thanks for the help.
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Melting Slicks
Joined: Sep 2005
Posts: 3,082
Likes: 0
From: eagle mountain utah
Bank one lean condition doesnt mean your engine is running lean. It means that the computer had to make long term fuel trim adjustments greater than +14% (adding fuel:positive) for more than 10 minutes. Because the computer made the adjustments, your engine is running 14.7:1.
If there is a reason that is keeping fuel from the entire left bank, your computer will adjust for it and lengthen injector opening time-until you hit WOT. Dont go wot until you solve the problem.
If there is a reason that is keeping fuel from the entire left bank, your computer will adjust for it and lengthen injector opening time-until you hit WOT. Dont go wot until you solve the problem.
Last edited by leojnknsC5; Apr 29, 2008 at 07:31 PM.
Thread Starter
Instructor
Joined: Mar 2008
Posts: 124
Likes: 6
I just got back from the tech and basically he believes I had a vacum leak from where the boost a pump was conected to the engine. It was to a point where it would spin in each direction. He discounted the two wires from the boost a pump and tightend down the valv on the engine? Would this be enough to throw a code? I have not had the engine light on yet but, it also took a few hundred miles to set it off before.