hmm, Im sure that the m and dbox differ a lot, also with power output. the m-box s4 should have about 250hp, shouldnt it?
The D-box has 265 hp.
Did you look at the bin?
The point is, that max HP is at about 5800 rpm.
The specified load at this point is at the d-box = 135 and at the m box only 124... If this would be the only difference the theoretically max power of the m box would be about 91,XXX% of tghe mbox at 5800 upm. (Torque area in lower rpms is 164 (dbox) vs 146,XX(mbox) Thats 88,XX percent of the dbox: Dbox= 400Nm =tq= 295 lb/ft i dont know how much the mbox has. perhaps 275 lb/ft?)
This is theoretically because i did not take the possible differences of Ignition advance and fueling into it.
But this is the point.
Optimal Ignition doesnt differ. The KFZW`s differ for about 0,75 degrees in that rpm area. This may give the m box only 91,XX percent hp of the d-box, which are theoretically good for 242hp to the "should be" 250hp...
There are my 15 HP extra on the D-box.
All this is within thinking about the fueling should be similar, because too also aim to Lambda 1.0. Except BTS Or knockrecognition.
This works in Europe, because the mapping is made for 98 ROZ (research octan) which is 93 AON in the US. With less Octan the knocking recognition will pull timing back = less power... Maybe then the d-box will perform with 91 aoz like the m-box...
But yes, youre right there are no logs in from me now, but this is the theory. And what in abstrackt was written down by Audi
.
If i am wrong somewhere please tell me.
Regards
