I'm having the same issue although I'm getting some small timing corrections across the board at low rpm so I'm leaning towards fuel quality. Did you try a MAF bath? Was another thing I was going to try.
Timing looks spot on just flashed mhd stage 2 B58 and got little timing pull guess its our shit fuel here in England, but will have to do proper WOT pull and might need to try 91oct might clear timing
This N55 Motor is quite robust. Enjoying this E30 map for the time being!
I'm having the same issue although I'm getting some small timing corrections across the board at low rpm so I'm leaning towards fuel quality. Did you try a MAF bath? Was another thing I was going to try.
Timing looks spot on just flashed mhd stage 2 B58 and got little timing pull guess its our shit fuel here in England, but will have to do proper WOT pull and might need to try 91oct might clear timing
What octane are you running? 91 or 93?
93 octane.