kevin p Posted October 14, 2021 Report Share Posted October 14, 2021 Hi All, I'm having an issue with a MR2, at 5500 rpm it has some kind of cut or limiter going on. I've turn off all if the limiters with no improvement. Attach is the a log and the map. Thanks MR2CUTRPM.llgx MR2RPMCUT.pclx Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 14, 2021 Report Share Posted October 14, 2021 It is a misfire, there is no ECU commanded cut. It appears it is very rich, right before it misfires the lambda is showing 0.69, there are no many ignition systems that will light that up. Has it been tuned? Why is it so rich? Quote Link to comment Share on other sites More sharing options...
kevin p Posted October 14, 2021 Author Report Share Posted October 14, 2021 The car has not been fully tune as of this time. The start up and drivability off boost is good. Judging from the log, it goes rich when its being cut at that rpm. I also took fuel out but it didn't solve the issue. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 14, 2021 Report Share Posted October 14, 2021 No, it goes lean when there is a misfire or cut. It goes rich way before then, before then. Near the start of the run at 3500RPM you have 2.2ms injector PW at 80kpa MAP and lambda is on target. Where it starts to misfire at 5800RPM you have 6.8ms inj PW at 133Kpa MAP. I dont expect the VE changes much between these two points, so for a 65% increase in MAP (air flow) you have a 300% increase in fuel flow. That doesnt fit with normal logic. Does the MAP sensor match BAP with the engine off? I would at drop the values in the highlighted cells in the fuel table below down to something similar to the 19.3kpa row above them. Quote Link to comment Share on other sites More sharing options...
kevin p Posted October 19, 2021 Author Report Share Posted October 19, 2021 I tried that, still have the same issue. Ive notice the increase in the PW as well. Is there anything in the settings that would add 200% to the PW? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 19, 2021 Report Share Posted October 19, 2021 Attach the log and tune. On 10/15/2021 at 10:22 AM, Adamw said: Does the MAP sensor match BAP with the engine off? Quote Link to comment Share on other sites More sharing options...
kevin p Posted October 20, 2021 Author Report Share Posted October 20, 2021 map 14.8 bar 14.6, I did attach a map and log on the first message. Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 20, 2021 Report Share Posted October 20, 2021 I want the current tune and a log after you made the fuel table change I suggested. Quote Link to comment Share on other sites More sharing options...
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