At WOT sometimes it feels like i loose power , and misfire!!! Please help !! LOG

[GST98BIG16G]

Ok my story is that i had my car tuned at AMS , it ran fine for 2 days , at that time i had COP ignition. Then after couple of days car started misfiring at high rpms , but it was rarely not all the time . Then after some time i went to a parts store and got 4 brand new 300m coils, and it did not help , so i figured it might be something else , now i put back on stock ignition with wires and etc. Now here is my todays log , i had the car for 7 years invested over 8000$ and did all the work myself , except tuning !!! Tuning is not my stuff , im really bad at it . So guys take a look at this i just floored it from 1 thru 3 gears , i did by my house i cant do a 3rd or 4th gear full all the way , too many cops!!!!
Thanks , ALL OPINIONS WELCOME!!!!

 

[twdorris]

My first suggestion, which has nothing to do with your question, is to use the new V3 application on your laptop:

ECMTuning Downloads

You can use that to log and tune a V2 ECU. Just set the device type first using the "configure connection" dialog.

It's a much nicer application and actually makes our job easier on this end reviewing datalogs.

Second, you'll probably want to post into the log file advice section of this forum or post on the ECMTuning forums. This particular forum isn't really an appropriate place.

Third, the log file you posted does show what really seems like ignition misfire to me. I would keep looking into that as much as you can. Pull the plugs and make sure they're gapped to around 0.028" for, example. That's a very common problem that causes misfire like this.

Thomas Dorris
ECMTuning, Inc.

 

[GST98BIG16G]

My first suggestion, which has nothing to do with your question, is to use the new V3 application on your laptop:

ECMTuning Downloads

You can use that to log and tune a V2 ECU. Just set the device type first using the "configure connection" dialog.

It's a much nicer application and actually makes our job easier on this end reviewing datalogs.

Second, you'll probably want to post into the log file advice section of this forum or post on the ECMTuning forums. This particular forum isn't really an appropriate place.

Third, the log file you posted does show what really seems like ignition misfire to me. I would keep looking into that as much as you can. Pull the plugs and make sure they're gapped to around 0.028" for, example. That's a very common problem that causes misfire like this.

Thomas Dorris
ECMTuning, Inc.

Nobody helped me out there , so im back here again , ok i gapped plugs to .025 or .026 and now it misfires MUCH less!!! so what is the prob?