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  1. Hi All, Hey I have this issue with my 2010 V36. Best described by something I stole off the net below. From my extensive Google research I reckon I need the attached ECM update. It's pretty bad. Every time I'm driving on a highway at over 100km/h and I decelerate and the car engine brakes, it shuts down and goes into a limp mode where it won't go above 30km/h and starts jolting violently if I accelerate. If I have no road shoulder to use I am screwed. If I pull over and turn off the car off for 30 secs its back to normal, until it happens again. Happened 5-times one way from Sydney to snow last year. If I drive where my foot is always slightly accelerating or braking it doesn't happen. But I as soon as I coast and let the car decelerate above 100km/h it will happen. Is anyone experiencing the same issue? Does anyone know a fix? I plan to clean the MAF's with CRC cleaner. Have done the pedal ECM reset sequence. Does anyone know anyone who can do this update who isn't Nissan or Infiniti as, they aren't overly helpful Has anyone had the ITB09-028 ECM update from Nissan? I have aftermarket cold air intakes and an Uprev flash tune I reckon the ECM needs the ITB09-028 update I have attached. Any thoughts on this? Here is how I would describe the issue based on some G37, owners issue: POWER TRAIN Apparently on 2009 infiniti g37s, there is a programming error/deficiency in the electronic engine control module (ecm) affecting the processing of the mass flow rate sensor that will cause the engine to unexpectedly (and without a dash warning indicator) to lose power. at occurrence of the failure, the car will decelerate from highway speed to less than 35 mph within a few seconds. following the failure, the engine rpm will not exceed 2,400 rpm and speeds above 35 mph are impossible (i found that 4th gear is the highest gear selectable). this failure can be dangerous in a number of traffic situations. i have learned from an infiniti service dept. that the failure will temporarily correct itself if the engine is turned off for a period of time, but that the failure could reoccur. the car's ecm was re-programmed by towbin infiniti (las vegas, nv) on august 30 and that supposedly fixes the failure. while at towbin, the service man said that infiniti knows of the problem, but is waiting to see how wide-spread the problem is. owners have not been told of this problem. towbin service said they have seen about 300 cases of the problem. a salt lake city dealer service dept. had also heard of this problem. again, i feel this problem can be dangerous, because: if it were to occur in heavy traffic, it may be difficult to get out of the way of others; if it were to occur when turning in front of oncoming traffic; after it occurs, there is no way to keep up with higher speed traffic - one is left going slow and hoping no one rear ends me; without more information, i have no way of knowing if the problem has really been fixed. ITB09-028.pdf
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