Indeed, thought you meant that the p2m was 4% out on top of frictional losses. If it's at 4% out total that sounds reasonable, although maybe try a new chain and pulley wheels :)
Yeah 4% total. So 1-2% higher, with drive train losses at 1-2%. Doesnt really matter. Only as I did a previous map test on the neo power and this one with p2m. So needed to know difference.
No. 1-2% out isn't much.