bmw m50 turbo e-85 ms1extra 029y3

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Bogotyr
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bmw m50 turbo e-85 ms1extra 029y3

Post by Bogotyr »

Hello,we are currently working on m50 turbo project. Car now runs on 530cc/min injectors at 6bar fuel rail pressure (soon to replace to bigger ones that give 500cc/min at 3bar). Yesterday we run car at 180-190kpa pressure. Still didn't receive wideband (hope to get it Monday) , so ignore O2 scale in datalogs. I need some help with setting idle setting right for two wire bosch valve (not it work not bad for warm-up, but not in closed loop). And the main question why I'm even starting - one strange thing - when you step on the throttle and get to boost and then release it - bov opens , pressure drops and then spikes to 100kpa and stays there for some time (but throttle is closed all this time !). And it happens often. Interesting part - Gve and spark angle ignores this MAP value and still gives the right ones (those that are at 20-30kpa) ! What can be wrong and is there even something wrong ?

Will appreciate any suggestions ant feedback :)
btw - car is e36 touring and is being prepared for drifting event in 15days. I'm using tunerstudio MS lite v2,6,19

Check tune file and datalogs fro yesterday. Thank you :)

P.s. my log files are over 1mb so how should I upload them ? will wetransfer link be ok ?
Bogotyr
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Joined: Mon May 14, 2012 3:35 am

Re: bmw m50 turbo e-85 ms1extra 029y3

Post by Bogotyr »

and could soumeone help me understand what hapened here ? why injector dc droped to 0 here ? is it because of the pressure or something else ?
Matt Cramer
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Re: bmw m50 turbo e-85 ms1extra 029y3

Post by Matt Cramer »

Probably overboost protection or a rev limiter made the duty cycle shut off.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
dontz125
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Re: bmw m50 turbo e-85 ms1extra 029y3

Post by dontz125 »

Agreed - your .msq shows a soft rev limit of 6200, and a hard limit of 6500. Your screen shot shows a max rpm of 6398.

Sounds suspicious to me ... :)
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Bogotyr
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Posts: 14
Joined: Mon May 14, 2012 3:35 am

Re: bmw m50 turbo e-85 ms1extra 029y3

Post by Bogotyr »

yep - there was overboost protection at 200kpa :D

And what about that spike with constant 100kpa map ? any ideas ? map sensor get pressure from intake manifold through 3-way spliter and goes do map sensor and fuel pressure regulator. Can that cause these problems ?
Matt Cramer
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Re: bmw m50 turbo e-85 ms1extra 029y3

Post by Matt Cramer »

The overrun "spike" is a visualization error as the INC file in TunerStudio can see a low MAP voltage as out of bounds and report 100 kPa.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Bogotyr
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Posts: 14
Joined: Mon May 14, 2012 3:35 am

Re: bmw m50 turbo e-85 ms1extra 029y3

Post by Bogotyr »

Is there any way to fix that ? it bugs me out because I can't use ve analyse function in log viewer :/
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