Purpleline Posted February 1, 2020 Report Share Posted February 1, 2020 Im running out of idea what wrong with the boost. it run totally fine without switch on the close loop boost ctrl. even 1.0bar, missfire or jerk happen at 4000, 5500rpm. this is not 1 case but 3cars got same issue. no matter i adjust richer or leaner. it still miss so i wonder it maybe weak sparkes so i upgraded to R35coil. still same problem. can someone share some light in this matter? it run fine b4 LINKg4+ at 1.0bar..... wouldnt that be hardware or software problem? possible BOV leak to cause such? I did adjusted the new BOV tighter but no different. same new bov as befoew without LINK g4 b4 at 1.0bar.... Quote Link to comment Share on other sites More sharing options...
Purpleline Posted February 1, 2020 Author Report Share Posted February 1, 2020 (edited) i try to upload the log file but it only allow 0.45MB...... Edited February 1, 2020 by Purpleline Quote Link to comment Share on other sites More sharing options...
Purpleline Posted February 2, 2020 Author Report Share Posted February 2, 2020 Pls help, it really doesnt make any sense. Afr are fine and good. Once it miss, it go lean. Always happen at 4000rmp. Now i start to think it is ecu issue. It has no problem gpimg 1bar b4 with stock ECU..... Quote Link to comment Share on other sites More sharing options...
cj Posted February 2, 2020 Report Share Posted February 2, 2020 Is it on the factory CAS? these have been known to have timing scatter at higher RPM which can cause misfires. Can you post a config file and the log. The thing you are mainly looking for is RPM ROC going +/- repeatedly and a kind of fuzzy looking rpm line. Your screenshot isnt that clear but it looks like you might have some rpm jitter present. Also the dwell time can be a bit of a giveaway if its jumping around as well Quote Link to comment Share on other sites More sharing options...
Purpleline Posted February 2, 2020 Author Report Share Posted February 2, 2020 Yes factory cas. Im going to move down dwell to 2.7 snd try agsin. I changed 13v at 2.7. It is better but still happen at4000rpm. I will adjust 14v at 2.7 and test again Quote Link to comment Share on other sites More sharing options...
Purpleline Posted February 2, 2020 Author Report Share Posted February 2, 2020 Problem fixed..it is my MAP limit set too low. While set at 210 which 0.95 still able to hit cut. Stupid me Quote Link to comment Share on other sites More sharing options...
Chris250 Posted February 5, 2020 Report Share Posted February 5, 2020 If you go into advanced settings for the boost cut you can narrow down the threshold which the cut activates Purpleline 1 Quote Link to comment Share on other sites More sharing options...
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