Huge Backfire and Flames

Izero · 03-07-2016, 01:26 PM

Quote:

Originally Posted by guru_method

No falt foot shifting in either, just shifting as quickly as I can. 3-4 shifts, correct.

Oem plugs, oem gap replaced last year.

Will try other maps. Usually do Map 5 because I don't know exactly how much ethanol is in the fuel. Should be ~e60 from the mix but do not have an analyzer to be certain.

Thanks

Didn't realize you were running E60... don't do pulls in map 1 or 2...

I think you might need better than OEM plugs... maybe switch to some NGKs and see if that fixes it?

You should consider testing your Ethanol mixture too... but my thought is that you're just loading up between shifts which ignites and is causing your car to have an afterfire....

guru_method · 03-09-2016, 10:58 PM

Quote:

Originally Posted by Izero

Didn't realize you were running E60... don't do pulls in map 1 or 2...

I think you might need better than OEM plugs... maybe switch to some NGKs and see if that fixes it?

You should consider testing your Ethanol mixture too... but my thought is that you're just loading up between shifts which ignites and is causing your car to have an afterfire....

I ordered the test kit. I am looking into getting the M4 plugs instead of NGKs since they have mixed reviews

Izero · 03-10-2016, 05:44 PM

I would just get the NGK and call it a day... just make sure you order them from a reputable site like ECS Tuning or something...

Antetokounmpo · 03-10-2016, 06:57 PM

Quote:

Originally Posted by Izero

I would just get the NGK and call it a day... just make sure you order them from a reputable site like ECS Tuning or something...

Oem plugs are completely fine for any tune on stock turbos.

Jeff@TopGearSolutions · 03-10-2016, 07:02 PM

Quote:

Originally Posted by guru_method

Tune is the same from about early January. I hope it's not hardware related the Stage 2 fuel pump is less that 1000 miles from Fuel-It although it's been in there for about 6 months, the injectors are original 43k on odo.

I'm gonna update the JB4 to the latest version and do some logs tonight.

Injectors can be bad by 43K mine were done by then.

Instead of posting screen shots, can you post the links to logs?

guru_method · 03-12-2016, 12:42 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

Injectors can be bad by 43K mine were done by then.

Instead of posting screen shots, can you post the links to logs?

I'm dure they can be by now.

Links were hyperlinked in posts #1 and #18 just above the screenshot

TwinPerformance · 03-12-2016, 08:32 PM

TheMidnightNarwhal · 08-23-2018, 05:47 PM

So really op no conclusion? Hate when threads end like this.
guru_method

Rob09msport · 08-24-2018, 07:44 AM

Could it be aggressive burble when he lifts for the shift real quick dumping fuel into cylinder ?

darkrom · 08-21-2019, 08:08 AM

This is 100% the NLS relay. I got this right after installing it. It only happens when you shift hard at WOT right? Try shifting at roughly 90% throttle and it won’t happen. Imo this is working as designed. If you take out the relay it will stop.

03-10-2016, 05:44 PM	#25
Izero Private First Class 25 Rep 128 Posts Drives: 2008 BMW 335Xi - Alpine White Join Date: Jan 2015 Location: New Jersey iTrader: (0)	I would just get the NGK and call it a day... just make sure you order them from a reputable site like ECS Tuning or something... __________________
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03-12-2016, 08:32 PM	#29
TwinPerformance New Member 9 Rep 18 Posts Drives: BMW 335i Join Date: Sep 2012 Location: Florida iTrader: (0)
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08-23-2018, 05:47 PM	#30
TheMidnightNarwhal Major General 2814 Rep 6,384 Posts Drives: 11' 335is DCT Join Date: Jun 2015 Location: Gatineau, Quebec iTrader: (0)	So really op no conclusion? Hate when threads end like this. guru_method
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08-24-2018, 07:44 AM	#31
Rob09msport Lieutenant 128 Rep 488 Posts Drives: 09 335 msport Join Date: Nov 2016 Location: Mount Sinai ny iTrader: (1)	Could it be aggressive burble when he lifts for the shift real quick dumping fuel into cylinder ?
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08-21-2019, 08:08 AM	#32
darkrom Colonel 237 Rep 2,341 Posts Drives: 135i Join Date: Feb 2011 Location: Rhode Island iTrader: (5)	This is 100% the NLS relay. I got this right after installing it. It only happens when you shift hard at WOT right? Try shifting at roughly 90% throttle and it won’t happen. Imo this is working as designed. If you take out the relay it will stop.
	Appreciate 0 Quote