730d EDC16C31 MAFless, boost problem ?

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Re: 730d EDC16C31 MAFless, boost problem ?

Postby juice » Wed Jul 25, 2018 9:19 am

I finally managed to get a log of 1.5 boost, little bit over 1200 mg/stroke, like between 1200 and 1250 mg/stroke air lambda is little under 17 but i get only max 70 mg/stroke log
Is there any fuel limit ? It sticks to 70mg, i expect to have some oscillations at least 71 72 73 if air mass goes even over 1250. Lambda maps doesnt limit me im pretty sure

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Re: 730d EDC16C31 MAFless, boost problem ?

Postby jurebv » Wed Jul 25, 2018 9:53 pm

can you send a mappack with all maps you edited and i will check if you missed something,using your ols from ecuconnections in lambda maps you set factor for AFR 0,01475 which is not correct for diesel cars use 0,01455

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Re: 730d EDC16C31 MAFless, boost problem ?

Postby juice » Thu Jul 26, 2018 7:16 am

@jurebv, that's correct ols of my car with already remap :)
Usually i just set lambda to 1.1 or 1.15, that was just a test even if 14.6 14.7 doesnt matter.
The problem is, even if i set lambda to 1, fuel doesnt go more than 70 mg, it sticks there like a limiter, look at log picture, that was full load. Airmass fluctuates in internal 1200 - 1250 but fuel sticks there, no 1mg more
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Re: 730d EDC16C31 MAFless, boost problem ?

Postby lsdlsd88 » Sat Jul 28, 2018 11:11 am

compare iq with duration / rail pressure to understand if it's only a diag limit.

keep in mind your duration map goes only to 90mm3 (not mg!)

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Re: 730d EDC16C31 MAFless, boost problem ?

Postby juice » Mon Jul 30, 2018 11:12 am

lsdlsd88 I know, i extended it to 90 mm3 , that means 75 mg
Finally i managed to find all limiters, now i can log 75 mg with 1.55 boost, car pulls good

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