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Discussion Starter #1
Having issues with check engine light flashing and going steady then throwing error code p0300 and p0301. It usually happens around 4k and after car is hot.

Collected some data and it looks lean to me, but I was told everything looked ok and to check my hardware. Checked hardware and everything felt tight and secure.

Always like to get a second opinion. Maybe someone with a little more knowledge could take a look at the data. I have a C&L CAI and boss intake along with roush axle-backs.

Thanks.
 

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who tuned it? just curious
 

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Im sure Chris will pop in here and help you out. did you call Bama yet? they are very helpful
 

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Did you put your foot to the floor in this datalog? It looks like you're about 1/2-3/4 throttle. That's why it's not going into optimum power mode.

Go datalog again in 3rd or 4th gear from like 2500-7000, foot to the floor and then post back up. I am willing to bet it shows .850 lambda or 12:1 air/fuel ratio.

Your P0300 and P0301 are cylinder 1 misfire codes, which are common in 2011 GT's. We'll see how this datalog you post up looks and go from there. Probably not a tune problem, but we'll look into it.
 

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nvm. chris is here.
 

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Discussion Starter #9
Did you put your foot to the floor in this datalog? It looks like you're about 1/2-3/4 throttle. That's why it's not going into optimum power mode.

Go datalog again in 3rd or 4th gear from like 2500-7000, foot to the floor and then post back up. I am willing to bet it shows .850 lambda or 12:1 air/fuel ratio.
Cant say 100% foot was to the floor. will try again.
Thanks.
 

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Here you go. got on it pretty good this time.
I can see were AFR does drop at WOT.
There you go! That's perfect. :bigthumbsup

This one doesn't have measured air/fuel ratio, but it shows lambse (commanded air/fuel ratio) at .899 lambda, which equates to 12.65 air/fuel ratio. That looks great! You can also see the TP volts flatline, which means it's to the floor. Perfect!

Looks good to me! You could post another with the same stuff, plus measured air/fuel ratio and spark advance, but that's up to you. If we're commanding .899, it's going to be within 1%, most likely.

Chris Rose
 

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Discussion Starter #14
There you go! That's perfect. :bigthumbsup

This one doesn't have measured air/fuel ratio, but it shows lambse (commanded air/fuel ratio) at .899 lambda, which equates to 12.65 air/fuel ratio. That looks great! You can also see the TP volts flatline, which means it's to the floor. Perfect!

Looks good to me! You could post another with the same stuff, plus measured air/fuel ratio and spark advance, but that's up to you. If we're commanding .899, it's going to be within 1%, most likely.

Chris Rose
Thanks Chris.
Guess I am back to looking at hardware.
 

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Do another one showing spark advance and knock sensors. Let's make sure that the tune isn't showing too much timing at wide-open-throttle. Might as well throw air/fuel ratio on there as well, to make sure it matches lambse.
 

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Discussion Starter #16
Do another one showing spark advance and knock sensors. Let's make sure that the tune isn't showing too much timing at wide-open-throttle. Might as well throw air/fuel ratio on there as well, to make sure it matches lambse.
Did some data logging before I head into work.
 

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Question, do you have a N2MB WOT box? Several guys have been flashing these codes under partial/full throttle because of a wiring issue.
 

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looks as if in several points under WOT timing is getting pulled
Datalog looks good! Looks like air/fuel ratio is between .850-.900 at WOT and timing peak is 26 degrees. It's pulling timing, but not via the knock sensors. You went to 7000 RPM a few times there, and only once did the knock sensors pull timing, and only after the 2nd shift, so I imagine 3rd gear. The timing is low, and it's more than likely because of how hot it is. Nobody is able to keep their intake air temps down this time of year.

Chris Rose
 
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