05-05-2015, 07:11 AM | #1 |
Lieutenant Colonel
141
Rep 1,837
Posts |
Software issue or Hardware issue? need solution/advice
yet it is another thread on drive train malfunction, but a bit different, as i need to decide ASAP whats the next step i should take to try and fix it.
I am running a tune with 705BHP and 920NM torque i have no issues on everyday basis use, however when i go out on autobahn/airfield and go WOT in any mode (efficient/sport/sport+) soon as rpms get to 5-5.5k i get misfires and if i dont let off the throttle immediately or change to next gear i get CEL (sometimes blinking (it is different from when it is just there)), drive train malfunction and power loss. Soon as i stop, turn the engine off, turn it on, power is back, d t mal is gone and CEL needs to be cleared obviously. yesterday i had 1000-mile drive and i was trying to figure out if this happens only under WOT or not, so i did manage to get to 7400rpms in 4th without getting any errors under 1/2 - 3/4 of throttle but then i got all the issues under 1/4-1/2 throttle in 5th gear coming to 5500 rpms i have never had this issue with catless DP's and NO tune, catless dp's and BMS with NO can tool, so logically thinking it is caused by ECU tune and my tuner clearly does not know what the issue is, as he never tested car under WOT and under slowly acceleration he got to 190mph on dyno and car been with him twice already HOWEVER, my mechanic at bmw did all the tests and checked my spark plugs and coils and there were misfires in the memory of all 8 cylinders obviously and code: 118111 Mixture control 2, cross-bank: Fuel-air mixture too rich, but fuel-air fault appeared twice at 0 rpms and 760 rpms in other words at the time of engine being off and then at idling so he said fuel-air issue in definitely a software issue and 100% related to my tune, however d t mal/cel/power loss might be to do with turbo actuators! as early e9* 335's had exact same issue with d t mal, cel, power loss under WOT above 120mph and bmw couldnt understand what the issue is, but eventually they changed actuators and issue was gone. also i get misfires/d t mal and CEL when i start the car after 24h of not using it, then i need to turn it off, start again couple of times and then it is gone! i have no problem changing actuators, however do i need to spend $$ and mine and my mech's time ? my car going back to tuner tomorrow and i want him to play around with timing between 5k rpms and redline, however if anyone had exact same issue and knows exactly what needs to be adjusted please let me know here or PM me... i am quite desperate to fix it, as i have airfield event coming on saturday and so many super/hypercars coming there, but unless my car is fixed, no point going there and then i have to wait till end July for next event i wanted to drive down to Br and get a tune done there before saturday, however they told me next available appointment is 6-7 weeks away and it is kind of pointless for me to pay twice for more or less same tune, when i am sure solution is there and it is easy, it is just my tuner does not know exactly what needs to be done any input would be highly appreciated! Last edited by mstmng; 05-05-2015 at 07:18 AM.. |
05-05-2015, 09:00 AM | #2 | |
Lieutenant Colonel
363
Rep 1,805
Posts
Drives: 2014 BMW M5 F10 CP
Join Date: Apr 2013
Location: Dallas, Texas
|
Quote:
What I am saying to you is I suspect it's got to do with the remap down pipe combination somehow. Bone stock I am dynod at 612 whp. At 15% correction factor I'm in your ballpark for hp. Every person who I have spoken to who has the issue has both downpipes and the more aggressive remap combo. I can't say with 100% certainty.. But that has been my experience.. I think the best thing to do is to get your remap customized by your tuner and go from there..if that doesn't work..maybe head to BR? If I still lived in London, I would make the trip just because I am confident BR could sort it out with your car there on their Dyno.
__________________
2014 BMW F10 M5 ZCP | SSII / Black | MSR Stage III | MSR Intakes | RPi GTM Exhaust | RPi Catless Downpipes |RW Carbon Front Lip | RW Carbon Diffuser | RW Carbon Trunk Spoiler |
|
|
Appreciate
0
|
05-05-2015, 09:02 AM | #3 | |
Lieutenant Colonel
141
Rep 1,837
Posts |
Quote:
i would head down to br and i already regret i never did in first place but i dont want to wait nearly 2 months... |
|
Appreciate
0
|
05-05-2015, 09:14 AM | #4 | ||
Lieutenant Colonel
124
Rep 1,840
Posts
Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
|
Quote:
If I can't get the Dinan 100% in the next month I am going to have Eurochagred tune on their 4 wheel dyno for the day so we can get real results and confirm that there will be no issues at all peddle inputs. I want a fast reliable tune, not the most aggressive less reliable version and thats why I originally picked the Dinan.
__________________
|
||
Appreciate
0
|
05-05-2015, 09:20 AM | #5 | |
Lieutenant Colonel
141
Rep 1,837
Posts |
Quote:
i have been advised to: "lower 1 degree of timing between 5k rpms and redline" or to be on safe side "2", however i might simply need to use higher octane petrol and issue will be sorted, but i want to continue using ron98 and have power delivered at any rpms |
|
Appreciate
0
|
05-05-2015, 09:22 AM | #6 |
Lieutenant Colonel
363
Rep 1,805
Posts
Drives: 2014 BMW M5 F10 CP
Join Date: Apr 2013
Location: Dallas, Texas
|
Have you tried your car on a higher octane mix? I hear this can help..
__________________
2014 BMW F10 M5 ZCP | SSII / Black | MSR Stage III | MSR Intakes | RPi GTM Exhaust | RPi Catless Downpipes |RW Carbon Front Lip | RW Carbon Diffuser | RW Carbon Trunk Spoiler |
|
Appreciate
0
|
05-05-2015, 09:31 AM | #7 | |
Lieutenant Colonel
141
Rep 1,837
Posts |
Quote:
i have been told i need to use 4-6 octanes higher fuel than i usually use, however my octane booster boosts only by 1 octane, so did not help |
|
Appreciate
0
|
05-05-2015, 09:42 AM | #8 | ||
Lieutenant Colonel
124
Rep 1,840
Posts
Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
|
Quote:
__________________
|
||
Appreciate
0
|
05-05-2015, 10:01 AM | #9 | |
Lieutenant Colonel
141
Rep 1,837
Posts |
Quote:
actually now as i am thinking about it, towards the end of 1st tank, i was able to push a bit further than 5.5k rpms before i would get misfires .... so adjusting the timing should fix my issue lets see what is going to happen tomorrow, we start 8am |
|
Appreciate
0
|
05-05-2015, 12:55 PM | #10 | ||
Captain
165
Rep 798
Posts |
Quote:
__________________
2015 M5 Individual Moonstone Metallic / Special order Caramel/Black / Special order Walnut Honey Trim/ Comp Package / ED / Left the Stable :-(
2018 Volvo XC90 T6 POLESTAR 2018 AMG GT 2017 Fiat 500C Abarth |
||
Appreciate
0
|
05-05-2015, 01:17 PM | #11 |
Lieutenant Colonel
141
Rep 1,837
Posts |
|
Appreciate
0
|
05-05-2015, 01:18 PM | #12 |
Captain
165
Rep 798
Posts |
Aah! Not up to date on lingo. My ED is May 21. Thanks
__________________
2015 M5 Individual Moonstone Metallic / Special order Caramel/Black / Special order Walnut Honey Trim/ Comp Package / ED / Left the Stable :-(
2018 Volvo XC90 T6 POLESTAR 2018 AMG GT 2017 Fiat 500C Abarth |
Appreciate
0
|
05-05-2015, 01:57 PM | #13 |
Lieutenant Colonel
124
Rep 1,840
Posts
Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
|
I had to ask the same a few years back
__________________
|
Appreciate
0
|
05-05-2015, 04:16 PM | #16 |
Lieutenant Colonel
363
Rep 1,805
Posts
Drives: 2014 BMW M5 F10 CP
Join Date: Apr 2013
Location: Dallas, Texas
|
Aaah..nope... definitely not it....
__________________
2014 BMW F10 M5 ZCP | SSII / Black | MSR Stage III | MSR Intakes | RPi GTM Exhaust | RPi Catless Downpipes |RW Carbon Front Lip | RW Carbon Diffuser | RW Carbon Trunk Spoiler |
|
Appreciate
0
|
05-06-2015, 01:39 AM | #17 | |
Captain
165
Rep 798
Posts |
Quote:
You can see the interior when the car is here. Are you around tri state area?
__________________
2015 M5 Individual Moonstone Metallic / Special order Caramel/Black / Special order Walnut Honey Trim/ Comp Package / ED / Left the Stable :-(
2018 Volvo XC90 T6 POLESTAR 2018 AMG GT 2017 Fiat 500C Abarth |
|
Appreciate
0
|
05-06-2015, 03:20 AM | #18 |
Lieutenant Colonel
141
Rep 1,837
Posts |
|
Appreciate
0
|
05-06-2015, 04:15 AM | #19 |
Lieutenant Colonel
141
Rep 1,837
Posts |
this is what we got now
my guy is saying it is a fuel pump issue and i might have to change fuel pump (checking if there is a recall on my car) or software update for a fuel pump also he said my ignition has not been adjusted, so if we lower "1 degree timing" between 5k rpms and redline it will be BELOW stock |
Appreciate
0
|
05-06-2015, 08:29 AM | #20 | |
Lieutenant Colonel
124
Rep 1,840
Posts
Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
|
Quote:
I believe it is a fuel issue but I think the ecu is cutting fuel because of something setting or safety. This was mentioned the a while back by another member. He made mention that LEIB had to do digging but they found what the setting.
__________________
|
|
Appreciate
0
|
05-06-2015, 11:42 AM | #21 | |
Lieutenant Colonel
141
Rep 1,837
Posts |
Quote:
apparently my tune is Br tune and Bruno is the one who is writing the tune, my guy is only applying it to the ECU Bruno is saying it is a hardware issue as software is definitely issue free They decreased power: torque, boost etc, NOT the timing and reflashed my car. I went to test drive it and same issue again, however now it happened in 5th gear, after i redlined it all the way down the 4th, but it did happen in 5th only before, so i will do more tests on airfield on saturday now my guy said that he used some tools to read all the info and my high pressure fuel pump should be pumping 200 bar, however it pumps only 180bar now the question is, does anyone know what stock fuel pump is/must be pumping at? if it should be pumping at 200, then obviously i need to replace the pump or look into valves between pumps, etc if it should not be pumping at 200, means my tune is too aggressive for stock hardware and we need to lower the power down even further anyone here in good relations with LEIB in order to speak to them and see what they say regarding my issue? i would go down to them, but their price for tune is a bit of overkill especially when so many tuners are offering it...! |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|