Not doubting your comments but most b58s dynos I saw power peaking around 6500 RPM
https://www.google.com/search?q=b58+...ih=945#imgrc=_
Also your timing advance is quite low I guess with a bit less boost or higher octane you will get better timing and more power.
That's what happened to me when I increased the boost timing retarded which resulted to lower top end power.
I learned that more boost not always equal more power, Ignition timing is the key, If we don't get a good combustion then the extra boost is useless.
Also how do you make your own tune ? I wish I could do that.
Quote:
Originally Posted by enemigo13
mine at 6500 RPM :
Car: 340xi, software tune by me only.
Fuel used: 98RON.
Ambient Temp: 20 degrees of Celcius
IAT : 32 degrees of Celcius
Boost: 17.7 PSI
AFR: 12.6
Timing: 7.8 degrees
I would recommend to upload data from 6000-6300rpm range as most B58's make max power there.
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