Kinda noob air fuel question

Drew303 · 09-12-2015, 03:39 PM

OK so I am running BP single turbo kit and have had it installed for about 1200 miles now. Once I got it tuned, my air/fuel at idle and during normal acceleration ranges between 14.5 to 15. Today driving to work everything was normal. I just got done driving to the bank and at idle it was around 15.5-16.
Is this something to worry about?

Drew303 · 09-13-2015, 10:47 PM

one at a time people i can't handle all these responses

MAMotorsports · 09-14-2015, 09:57 AM

Was there a temperature change outside? Does the car seem to run any differently? You say it changed at idle, did it change under cruising or WOT at all?

There are many many many causes of this so its best to narrow it all down.

JWillis72 · 09-14-2015, 10:16 AM

Was it still running leaner when you started it the next time?

Drew303 · 09-14-2015, 01:08 PM

no next time i drove it the a/f was normal. it was hotter than usual that day if that could be a possible cause

MAMotorsports · 09-14-2015, 01:21 PM

If all is normal now, and it was just a one time thing I would not worry.

jwick · 09-14-2015, 03:24 PM

Quote:

Originally Posted by MAMotorsports

If all is normal now, and it was just a one time thing I would not worry.

^^THIS^^

If it's normal now it was probably just a hiccup. Watch them for awhile. It's possible you have a fuel trim O2 sensor starting on it's way out but I wouldn't worry unless it repeats itself.

Drew303 · 09-16-2015, 10:46 AM

I'm curious what to do if it happens again. Stay out of boost? Turn it off immediately?

Array · 09-16-2015, 11:36 AM

Quote:

Originally Posted by Drew303

I'm curious what to do if it happens again. Stay out of boost? Turn it off immediately?

Pull over in a safe area and stay out of boost, restart the car and see what happens, let it idle maybe and see if it sorts itself out. Then start checking sensors

09-12-2015, 03:39 PM	#1 (permalink)
Drew303 Base Member Join Date: Jan 2014 Location: Denver, Co Posts: 142 Drives: 2011 Turbo Nismo Rep Power: 11	Kinda noob air fuel question OK so I am running BP single turbo kit and have had it installed for about 1200 miles now. Once I got it tuned, my air/fuel at idle and during normal acceleration ranges between 14.5 to 15. Today driving to work everything was normal. I just got done driving to the bank and at idle it was around 15.5-16. Is this something to worry about?

09-13-2015, 10:47 PM	#2 (permalink)
Drew303 Base Member Join Date: Jan 2014 Location: Denver, Co Posts: 142 Drives: 2011 Turbo Nismo Rep Power: 11	one at a time people i can't handle all these responses SwissCheese likes this.

09-14-2015, 09:57 AM	#3 (permalink)
MAMotorsports Track Member Join Date: Jul 2015 Location: Glen Arm, MD Posts: 872 Drives: 370Z Rep Power: 17	Was there a temperature change outside? Does the car seem to run any differently? You say it changed at idle, did it change under cruising or WOT at all? There are many many many causes of this so its best to narrow it all down. katjmmx likes this. __________________ Daelen @ MA Motorsports MA-Motorsports.com https://www.facebook.com/pages/MA-Mo...C/125379858828

09-14-2015, 01:21 PM	#6 (permalink)
MAMotorsports Track Member Join Date: Jul 2015 Location: Glen Arm, MD Posts: 872 Drives: 370Z Rep Power: 17	If all is normal now, and it was just a one time thing I would not worry. __________________ Daelen @ MA Motorsports MA-Motorsports.com https://www.facebook.com/pages/MA-Mo...C/125379858828

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09-14-2015, 10:16 AM	#4 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 45	Was it still running leaner when you started it the next time?

09-14-2015, 01:08 PM	#5 (permalink)
Drew303 Base Member Join Date: Jan 2014 Location: Denver, Co Posts: 142 Drives: 2011 Turbo Nismo Rep Power: 11	no next time i drove it the a/f was normal. it was hotter than usual that day if that could be a possible cause

09-16-2015, 10:46 AM	#8 (permalink)
Drew303 Base Member Join Date: Jan 2014 Location: Denver, Co Posts: 142 Drives: 2011 Turbo Nismo Rep Power: 11	I'm curious what to do if it happens again. Stay out of boost? Turn it off immediately?