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N54 stall at 3k revs. PLEASE HELP
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05-23-2024, 05:12 PM | #1 |
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N54 stall at 3k revs. PLEASE HELP
Can someone help. I'm struggling to see what's wrong and MHD are no help.
Car was on the Dyno. Pulls to 3k revs and the throttle drops off for a few seconds and then pulls up again. 400 bhp it hit after. Here is the log with throttle closing https://datazap.me/u/gary-peter/rece...og=0&data=3-21 Here is a time it worked https://datazap.me/u/gary-peter/didn...og=0&data=3-21 Only fault on the ecu is fan. I have race fans on it as it's a drift car. MHD is trying to say it's stalling because it thinks it's not cooling itself. Also they are saying it looks like it's going into limp mode but it's not. Someone please help |
05-24-2024, 05:08 PM | #4 |
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05-25-2024, 01:08 PM | #6 |
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05-26-2024, 05:05 AM | #7 |
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In all these logs you have a 512 torque limiter active while the throttle is cut. I have never been able to find what these torque limiters mean except maybe 2048 has to do with shift bog. Is your traction control on? Are there any other codes? Have you got the stock fan connected correctly so its not throwing a fan code any more?
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05-26-2024, 05:41 PM | #8 |
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Yeah well spotted suspect No idea what 512 limiter means either.
gazzess Did you end up changing the diff? as in this thread you made https://www.e90post.com/forums/showthread.php?t=2100393 Manual? Auto? Do you have XHP? Scan for codes in the app see if anything weird. |
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05-27-2024, 05:48 PM | #9 | |
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Quote:
In case 512 is traction control limiter it’s possible that the diff change is causing DME to detect wheel spin. MHD allows you to record gear. I don’t know if this is a MHD parameter or info from DME but as I understand there’s no gear sensor for manual transmission and the gear is calculated using wheel speed, which would be incorrect with different final ratio. So could be causing problems if manual transmission. Last edited by suspect; 05-27-2024 at 06:03 PM.. |
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