SPARK PLUGS for 435 ECU TUNED

Paolo73 · 07-13-2015, 12:47 AM

Hi everyone,
I 've just up my 2014 435 F33 with ECU tuning and pure stage 1 with Turbo to intercooler TIC ready to be installed.
Oem spark plugs has missfire, burning time too short and prone for breaking.
Which one you suggest guys?
S55 spark plugs or Ngk 95770 both gapped?
Thanks 4 yours help...

Krelle · 07-13-2015, 05:21 AM

Quote:

Originally Posted by Paolo73

Hi everyone,
I 've just up my 2014 435 F33 with ECU tuning and pure stage 1 with Turbo to intercooler TIC ready to be installed.
Oem spark plugs has missfire, burning time too short and prone for breaking.
Which one you suggest guys?
S55 spark plugs or Ngk 95770 both gapped?
Thanks 4 yours help...

6 NGK 5992 ILZKBR7A-8G Laser Iridium Spark Plugs or maybe just the Bosch depending of how much power your producing.

PeterPure · 07-13-2015, 05:45 AM

Quote:

Originally Posted by Paolo73

Hi everyone,
I 've just up my 2014 435 F33 with ECU tuning and pure stage 1 with Turbo to intercooler TIC ready to be installed.
Oem spark plugs has missfire, burning time too short and prone for breaking.
Which one you suggest guys?
S55 spark plugs or Ngk 95770 both gapped?
Thanks 4 yours help...

Missfires after ECU tune is pretty common. What I noticed when that happens it's mostly due to the tune running richer AFR and your HPFP not being able to supply enough fuel. You get HPFP drops and then missfires. I doubt it's the plugs.

Paolo73 · 07-13-2015, 07:41 AM

Quote:

Originally Posted by Krelle

6 NGK 5992 ILZKBR7A-8G Laser Iridium Spark Plugs or maybe just the Bosch depending of how much power your producing.

Yes Krelle, Ngk 5992 is old numeration code, now is 95770.
Did you gapped ? 0,25 or 0,22?
Some other report that M4 spark plugs works fine even above 25psi.

Krelle · 07-13-2015, 10:31 AM

Quote:

Originally Posted by Paolo73

Yes Krelle, Ngk 5992 is old numeration code, now is 95770.
Did you gapped ? 0,25 or 0,22?
Some other report that M4 spark plugs works fine even above 25psi.

0,7mm Gap. (0,60mm work fine as well). Guess 0,7mm equals 0,25!?!
I haven't tried the ones from M4.
The original 335 plugs can be used as well. The other are better though.

Using other plugs doesn't give you steadier idle nor gain any power, it's pure engine protection.
/Krelle

mike@x-ph.com · 07-13-2015, 10:39 AM

How old are your spark plugs?

Paolo73 · 07-13-2015, 11:57 AM

Quote:

Originally Posted by mike@x-ph.com

How old are your spark plugs?

3 months old, 10.000 miles
This si why I am looking for something else.
Then probably I need to check air/fuel mix

mike@x-ph.com · 07-13-2015, 12:01 PM

Quote:

Originally Posted by Paolo73

3 months old, 10.000 miles
This si why I am looking for something else.
Then probably I need to check air/fuel mix

Im assuming you have no datalog feature with your current tune.

Dosturbos · 07-13-2015, 02:02 PM

Will a higher flowing LPFP help with the HPFP problem? Sometimes it is the LPFP that can't maintain a consistent pressure so the ECU freaks out and throws codes.

sonicsonic · 07-13-2015, 07:54 PM

I have f30 335i with ecu tune. It had misfires, I changed oem spark plugs to M-series spark plugs (m4, m5/m6 the same partnumber) but the issue came again. Then I flashed my car with another tuning file and now I have no any problems. No misfires! So the problem is exactly in flash tuning quality.

PeterPure · 07-13-2015, 11:31 PM

Quote:

Originally Posted by Dosturbos

Will a higher flowing LPFP help with the HPFP problem? Sometimes it is the LPFP that can't maintain a consistent pressure so the ECU freaks out and throws codes.

Nope. I tried that. Our hpfp just has limit in flow. The richer afr the flash runs, the faster you get missfires.

PeterPure · 07-13-2015, 11:32 PM

Quote:

Originally Posted by Paolo73

Quote:

Originally Posted by mike@x-ph.com

How old are your spark plugs?

3 months old, 10.000 miles
This si why I am looking for something else.
Then probably I need to check air/fuel mix

Yup its your air fuel mixture. When tuner flash your car he needs to leave the air fuel mixture stock. Then no issue!

Jeff@TopGearSolutions · 07-14-2015, 09:56 AM

Quote:

Originally Posted by sonicsonic

I have f30 335i with ecu tune. It had misfires, I changed oem spark plugs to M-series spark plugs (m4, m5/m6 the same partnumber) but the issue came again. Then I flashed my car with another tuning file and now I have no any problems. No misfires! So the problem is exactly in flash tuning quality.

It's dependent on targeted boost and ignition timing. A more conservative map will have less tendency to misfire.

mike@x-ph.com · 07-14-2015, 11:00 AM

Quote:

Originally Posted by Jeff@TopGearSolutions

It's dependent on targeted boost and ignition timing. A more conservative map will have less tendency to misfire.

+1
Just because you had no misfire on the second tune does not mean the second one is higher quality, it might just be more conservative. Your first tune might have been too aggressive for your mods.

shivaswrath · 07-15-2015, 10:27 AM

Quote:

Originally Posted by sonicsonic

I have f30 335i with ecu tune. It had misfires, I changed oem spark plugs to M-series spark plugs (m4, m5/m6 the same partnumber) but the issue came again. Then I flashed my car with another tuning file and now I have no any problems. No misfires! So the problem is exactly in flash tuning quality.

That's what I was thinking too....

PeterPure · 07-15-2015, 02:06 PM

Without a log it is all hard to say. I can just speak for myself and all the missfires I have had so far is due to the HPFP not being able to follow. Either too rich tune, too much ethanol etc etc... All resulting in logs showing HPFP dropping under 10 and voila missfire appears. No hardware issue at all.

07-13-2015, 12:47 AM	#1
Paolo73 Second Lieutenant 184 Rep 224 Posts Drives: Bmw M4 YMB Join Date: Jul 2014 Location: Pordenone/ITALY iTrader: (0)	SPARK PLUGS for 435 ECU TUNED Hi everyone, I 've just up my 2014 435 F33 with ECU tuning and pure stage 1 with Turbo to intercooler TIC ready to be installed. Oem spark plugs has missfire, burning time too short and prone for breaking. Which one you suggest guys? S55 spark plugs or Ngk 95770 both gapped? Thanks 4 yours help...
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07-13-2015, 10:39 AM	#6
mike@x-ph.com BimmerPost Supporting Vendor 24199 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	How old are your spark plugs? __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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07-13-2015, 02:02 PM	#9
Dosturbos Lieutenant 55 Rep 467 Posts Drives: 2017 F48 X1 MSport Join Date: Mar 2012 Location: Medford, MA iTrader: (1)	Will a higher flowing LPFP help with the HPFP problem? Sometimes it is the LPFP that can't maintain a consistent pressure so the ECU freaks out and throws codes.
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07-13-2015, 07:54 PM	#10
sonicsonic Private First Class 31 Rep 159 Posts Drives: 2014 335i xDrive 6MT 370whp Join Date: Jun 2013 Location: Krasnodar iTrader: (0)	I have f30 335i with ecu tune. It had misfires, I changed oem spark plugs to M-series spark plugs (m4, m5/m6 the same partnumber) but the issue came again. Then I flashed my car with another tuning file and now I have no any problems. No misfires! So the problem is exactly in flash tuning quality.
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07-15-2015, 02:06 PM	#16
PeterPure Major 677 Rep 1,349 Posts Drives: BMW F80 M3 Join Date: Jun 2008 Location: Belgium iTrader: (0) Garage List 2017 BMW F80 M3 [0.00]	Without a log it is all hard to say. I can just speak for myself and all the missfires I have had so far is due to the HPFP not being able to follow. Either too rich tune, too much ethanol etc etc... All resulting in logs showing HPFP dropping under 10 and voila missfire appears. No hardware issue at all.
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