Originally Posted by AGNO

Today I made two quick tests with the software HW 312 and SP 107 with engine Novak 17.5.
Honestly I have not found any differences in speed between the HW 312 and HW 323 that used before, perhaps a little more thrust acceleration.
The SP 107 and instead just a timing variable as the SPX with remarkable speed but unfortunately little linearity of acceleration (equal to the SPX).
Of course I do still find the right test for FDR for the SP 107 for surely it must be different from that of HW-312 (I tried both with FDR 3.86 in short track), but my first impressions is that the SP 107 is suitable a track with long straights, while the HW 312 is superior in technical track with a few straights.