Running lean ? Maybe ? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

lizbrayan · 06-16-2016, 02:21 AM

So I got revwork headers put in, still waiting to buy a oft for the tune and take advantage of everything. For the last week or so Ive been hearing burbling and pops from my echaust. Usally in 2nd or 3rd gear. Have a cat back put on with stock front pipe. Today I put in a K & N filter. Not sure if i put it in right gonna go to my mechanic to double check but now the pops and burbles are louder and are almost on command in 2nd or 3rd. I know backfire is a sign of running lean. Can anyone help me? I dont wanna blow my engine.

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guybo · 06-16-2016, 06:29 AM

Get Torque Pro from the app store and a bluetooth OBD2 port reader. Then tell us what your AFR is at WOT.

When you tune, you NEED to monitor AFR

Cole · 06-16-2016, 08:12 AM

If your engine is making those noises, it's already on its way out. I'd suggest you get your mechanic to tear down the engine and see if it's salvageable at this point.

Summerwolf · 06-16-2016, 08:15 AM

Oh yeah, your motor is really beyond help if its popping and burbling.

Should have got a tune first, remember it is all in the tune how long your motor lasts when you start modifying.

lizbrayan · 06-16-2016, 10:17 AM

Not sure if the last two comments are serious or sarcasm...

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Summerwolf · 06-16-2016, 10:33 AM

SUPER SERIAL, DO NOT DRIVE UNTIL IT HAS BEEN CHECKED OUT!!! You'll just regret it if you cause more damage, but the damage may have already been done

Don't wind up an internet meme lizbrayan.

lizbrayan · 06-16-2016, 10:35 AM

Its only been a few weeks with headers and less then a day with the air filter, care to explain whats going on and making the car run lean?

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Summerwolf · 06-16-2016, 10:46 AM

Obviously the 02 sensors are not reading correctly and neither is the MAF. You have changed all the air coming in and exiting the motor. It isn't responding correctly. Plus the K&N oil just coats the MAF sensor and usually breaks it! You said you may have not installed the air filter correctly either!?!?! Poor car.

lizbrayan · 06-16-2016, 11:19 AM

Went for a quick drive at wot at around 5k-6k the lowest afr i got was 11.84 and at idle it was at a 14.7

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Summerwolf · 06-16-2016, 11:24 AM

You are going WOT in this car!?!? JFC.... Its a goner for sure. Make sure to listen for knocking noises, and loud chirping sounds from your engine bay.

lizbrayan · 06-16-2016, 11:25 AM

I really cant tell if your messing with me or what...

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Summerwolf · 06-16-2016, 11:34 AM

How can you not tell obvious context through type???!!!! Its in black and white.

lizbrayan · 06-16-2016, 11:36 AM

Idk man guess im not good at context clues but id really appreciate it if youd tell me if youre serious or not lol

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Summerwolf · 06-16-2016, 11:37 AM

Quote:

Originally Posted by Summerwolf

SUPER SERIAL, DO NOT DRIVE UNTIL IT HAS BEEN CHECKED OUT!!! You'll just regret it if you cause more damage, but the damage may have already been done

Don't wind up an internet meme lizbrayan.

C'mon man.

06-16-2016, 02:21 AM	#1
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Running lean ? Maybe ? So I got revwork headers put in, still waiting to buy a oft for the tune and take advantage of everything. For the last week or so Ive been hearing burbling and pops from my echaust. Usally in 2nd or 3rd gear. Have a cat back put on with stock front pipe. Today I put in a K & N filter. Not sure if i put it in right gonna go to my mechanic to double check but now the pops and burbles are louder and are almost on command in 2nd or 3rd. I know backfire is a sign of running lean. Can anyone help me? I dont wanna blow my engine. Sent from my SGH-T999N using Tapatalk

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06-16-2016, 06:29 AM	#2
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Get Torque Pro from the app store and a bluetooth OBD2 port reader. Then tell us what your AFR is at WOT. When you tune, you NEED to monitor AFR

06-16-2016, 08:12 AM	#3
Cole Not a troll Join Date: Apr 2015 Drives: FR-S Location: Canada Posts: 5,104 Thanks: 8,237 Thanked 5,399 Times in 2,694 Posts Mentioned: 266 Post(s) Tagged: 4 Thread(s)	If your engine is making those noises, it's already on its way out. I'd suggest you get your mechanic to tear down the engine and see if it's salvageable at this point.

06-16-2016, 08:15 AM	#4
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	Oh yeah, your motor is really beyond help if its popping and burbling. Should have got a tune first, remember it is all in the tune how long your motor lasts when you start modifying.

06-16-2016, 10:17 AM	#5
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Not sure if the last two comments are serious or sarcasm... Sent from my SGH-T999N using Tapatalk

06-16-2016, 10:33 AM	#6
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	SUPER SERIAL, DO NOT DRIVE UNTIL IT HAS BEEN CHECKED OUT!!! You'll just regret it if you cause more damage, but the damage may have already been done Don't wind up an internet meme lizbrayan.

06-16-2016, 10:35 AM	#7
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Its only been a few weeks with headers and less then a day with the air filter, care to explain whats going on and making the car run lean? Sent from my SGH-T999N using Tapatalk

06-16-2016, 10:46 AM	#8
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	Obviously the 02 sensors are not reading correctly and neither is the MAF. You have changed all the air coming in and exiting the motor. It isn't responding correctly. Plus the K&N oil just coats the MAF sensor and usually breaks it! You said you may have not installed the air filter correctly either!?!?! Poor car.

06-16-2016, 11:19 AM	#9
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Went for a quick drive at wot at around 5k-6k the lowest afr i got was 11.84 and at idle it was at a 14.7 Sent from my SGH-T999N using Tapatalk

06-16-2016, 11:24 AM	#10
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	You are going WOT in this car!?!? JFC.... Its a goner for sure. Make sure to listen for knocking noises, and loud chirping sounds from your engine bay.

06-16-2016, 11:25 AM	#11
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I really cant tell if your messing with me or what... Sent from my SGH-T999N using Tapatalk

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06-16-2016, 11:34 AM	#12
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,349 Thanks: 2,113 Thanked 2,409 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	How can you not tell obvious context through type???!!!! Its in black and white.

06-16-2016, 11:36 AM	#13
lizbrayan Senior Member Join Date: Jan 2016 Drives: '15 Scion Frs Steel Location: New Jersey Posts: 285 Thanks: 108 Thanked 53 Times in 42 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Idk man guess im not good at context clues but id really appreciate it if youd tell me if youre serious or not lol Sent from my SGH-T999N using Tapatalk