engine missfires on map 5 with jb3 - N54TECH.COM : BMW N54 / N55 Turbo Performance forum

ALEKSANDER335 · **engine missfires on map 5 with jb3 -** 03-08-2010, 08:51 PM

I recently buy jb3 and the power is excellent on map3,but I put map 5 and as soon I hit the gas pedal the engine missfires for a moment and cel lights up.need help what to do?I have afe intake, 3"******* downpipes with bms downpipe fix,magnaflow exhaust and hks bov...I am running on 93 octane gas and the jb3 is 1.4.

JPSlick · 03-09-2010, 07:30 AM

Could be a need for new spark plugs or coilpacks. Which cylinders are misfiring?

How many miles on spark plugs?

Terry @ BMS · 03-09-2010, 10:24 AM

Quote:

Originally Posted by ALEKSANDER335

I recently buy jb3 and the power is excellent on map3,but I put map 5 and as soon I hit the gas pedal the engine missfires for a moment and cel lights up.need help what to do?I have afe intake, 3"******* downpipes with bms downpipe fix,magnaflow exhaust and hks bov...I am running on 93 octane gas and the jb3 is 1.4.

I would update to 2.0 and put in new plugs, to start. Does it misfire the same cyl every time?

ERM324 · 03-09-2010, 10:42 AM

i still havent solved my misfires

ALEKSANDER335 · 03-09-2010, 12:35 PM

My spark plugs have 34,000 miles and I dont know which cylinder is missfiring,I am taking the car to diagnose on friday....I buy the jb3 pinout to you terry 2 weeks ago and you shipped it to Puerto Rico,my question is why my jb3 says 1.4 and i bought it so recently,shouldnt I was supposed to received the latest version?

JPSlick · 03-09-2010, 01:02 PM

Quote:

Originally Posted by ERM324

i still havent solved my misfires

what have you tried? details?

Quote:

Originally Posted by ALEKSANDER335

My spark plugs have 34,000 miles and I dont know which cylinder is missfiring,I am taking the car to diagnose on friday....I buy the jb3 pinout to you terry 2 weeks ago and you shipped it to Puerto Rico,my question is why my jb3 says 1.4 and i bought it so recently,shouldnt I was supposed to received the latest version?

2.0 is still in beta and not finalized. 2.0 was only sent to those who REQUESTED it at the time of ordering.

Terry @ BMS · 03-09-2010, 01:40 PM

Quote:

Originally Posted by ALEKSANDER335

My spark plugs have 34,000 miles and I dont know which cylinder is missfiring,I am taking the car to diagnose on friday....I buy the jb3 pinout to you terry 2 weeks ago and you shipped it to Puerto Rico,my question is why my jb3 says 1.4 and i bought it so recently,shouldnt I was supposed to received the latest version?

There was a cutoff date for what we're shipping, 2.0 was by request only. Just email in and we'll send you a free update chip since you bought so recently.

ALEKSANDER335 · 03-09-2010, 06:54 PM

Did you meant mail it back to you the jb3? because it says email...

JPSlick · 03-09-2010, 07:13 PM

Quote:

Originally Posted by ALEKSANDER335

Did you meant mail it back to you the jb3? because it says email...

He wants you to send email to terry@burgertuning.com requesting the updated 2.0 chip and your address to send it to.

ALEKSANDER335 · 03-09-2010, 07:31 PM

Ok, thanks and sorry my english is not very well I am from Puerto Rico.I will email the 2.0 request to Terry.

JPSlick · 03-09-2010, 07:39 PM

Quote:

Originally Posted by ALEKSANDER335

Ok, thanks and sorry my english is not very well I am from Puerto Rico.I will email the 2.0 request to Terry.

I understand. No problem.

ERM324 · 03-10-2010, 12:14 PM

Quote:

Originally Posted by JPSlick

what have you tried? details?

Nothing so far - I highsided my '09 repsol and was busy repairing it this past week (at least shes all fixed up now, with the addition of nice michelin power pures). I have an appointment to drop it off at the dealer on saturday (going in fully modded), the service-guy is my boy so I should be good. Let them figure out the goddamn problem.

JPSlick · 03-10-2010, 05:11 PM

Quote:

Originally Posted by ERM324

Nothing so far - I highsided my '09 repsol and was busy repairing it this past week (at least shes all fixed up now, with the addition of nice michelin power pures). I have an appointment to drop it off at the dealer on saturday (going in fully modded), the service-guy is my boy so I should be good. Let them figure out the goddamn problem.

I would have atleas tried spark plugs and coilpack swaps first personally.

ERM324 · 03-10-2010, 05:16 PM

Yeah I have the sparkplugs at home and everything just my mind has been preoccupied with other things lately...dont want anything to do with it im just going to let them diagnose it and fix it.

JPSlick · 03-10-2010, 06:37 PM

OH ok... I personally think everyone with software and especially other mod should be changing spark plugs every 12K miles.

SLEEPYDUB · 03-10-2010, 06:46 PM

dam, highsides are pretty bad, i lowsided my 900rr at 60 once and it was pretty bad damage...never dropped my 954rr though

ALEKSANDER335 · 03-11-2010, 04:59 AM

Got my car diagnosed today and this are the codes 29CF dme combustion missfire on cyl3,29F5/29F4 and 2EF7 this last one the technician told me that did not was lighting up the cel light but it was present in the computer memory and that code was related to the termostat.does somebody know why I am getting this code on missffire on map 5?

ERM324 · 03-11-2010, 06:58 AM

Quote:

Originally Posted by SLEEPYDUB

dam, highsides are pretty bad, i lowsided my 900rr at 60 once and it was pretty bad damage...never dropped my 954rr though

Yeah man I was devastated, I got the Akrapovic full system overnighted (mine was scratched, and they wouldnt just sell me the can so I bought the whole system again, I couldnt deal with the scratched pipe), and the right fairings as well. Damage wasnt too bad, its included: exhaust, right passenger peg, right fairing (barely scratched), right bar-end (I got aftermarket ones that say RR), and right mirror (barely any damage). Believe it or not those sliders really saved me from ruining the whole right side of my bike, very thankful I had them on.

Here's a pic from before the fall (with my boys zx12r), looks exactly now but with some better tires mounted on....

ERM324 · 03-11-2010, 07:02 AM

Anyways, back to the topic of misfiring cylinders I'll let you know how it goes Saturday and what the problem really is with my car. I was one of the few that had very little problems, over the course of 2-3 years I only had one fuel pump replacement (nothing else). Maybe its time my plugs, pump, coils, or something else caught up to me and finally decided to take a **** after years of pushing out much more power than they were meant to haha. Ill keep you guys updated!

Terry @ BMS · 03-15-2010, 03:05 PM

Quote:

Originally Posted by ALEKSANDER335

Got my car diagnosed today and this are the codes 29CF dme combustion missfire on cyl3,29F5/29F4 and 2EF7 this last one the technician told me that did not was lighting up the cel light but it was present in the computer memory and that code was related to the termostat.does somebody know why I am getting this code on missffire on map 5?

Plugs, coils, or injectors. In some cases octane.

ALEKSANDER335 · 03-16-2010, 07:17 PM

Quote:

Originally Posted by Terry @ BMS

Plugs, coils, or injectors. In some cases octane.

Thanks Terry finally I think I found the problem!!! I put an octane boost from autozone in the tank and now in map 5 my car runs fine,no missfires and no chek engine light.I think that the gasoline from here in Puerto Rico even do it says 93 octane it does not work like that.Anyway I ordered the plugs to the dealer to change them and be sure that they are new....Thanks to everyone!!!

Mattssi · 03-16-2010, 08:29 PM

OOohh octane booster. I don't think that stuff has come recommended by anyone here.

Terry @ BMS · 03-16-2010, 09:21 PM

Great, hope it stays fixed!