@ Buzz Hornet,
Here is my magicdata for Istanbul:
[GP4 magic file]
16 ; fw
15 ; rw
28 ; 1st
34 ; 2nd
39 ; 3rd
45 ; 4th
51 ; 5th
57 ; 6th
19 ; fw
19 ; rw
25 ; 1st
31 ; 2nd
36 ; 3rd
42 ; 4th
48 ; 5th
53 ; 6th
15 ; fw
15 ; rw
28 ; 1st
34 ; 2nd
39 ; 3rd
45 ; 4th
51 ; 5th
57 ; 6th
5763 ; unk (dw)
17 ; fw
19 ; rw
25 ; 1st
31 ; 2nd
36 ; 3rd
42 ; 4th
48 ; 5th
53 ; 6th
5713 ; unk (dw)
54 ; hard tyre
53 ; soft tyre
100 ; >= 50 tyretype 1 else 0
16384 ; unused
16384 ; unused
16384 ; unused
16384 ; unused
15820 ; track grip
16384 ; unused
16384 ; unused
28 ; related to next value below
926 ; ride height
15030 ; air resistance?
6837 ; fuel???
128 ; subtracted from diff between field_e2 of 2 cars and then compared to speed of first car
15216 ; tyre wear
64768 ; added to car.field_108. related to cc grip factor
576 ; grip???
494 ; ?? cc power factor ace
514 ; ?? cc grip factor ace
484 ; ?? cc power factor pro
474 ; ?? cc grip factor pro
474 ; ?? cc power factor semi-pro
464 ; ?? cc grip factor semi-pro
461 ; ?? cc power factor amateur
448 ; ?? cc grip factor amateur
447 ; ?? cc power factor rookie
421 ; ?? cc grip factor rookie
512 ; ?? cc random perf range min
2048 ; ?? cc random perf range max
40 ; some chance. same chance multiplied with race perc.
64 ; segment count, range 1 to 256
60 ; sectors to pit in 1
7 ; sectors to pit in 2
20480 ; pre pit speed limit
15088 ; fuel consumption 1
14046 ; fuel consumption 2
3389 ; cc shuffler???
50 ; a segment nr before which flag 0x80 in car.flags_ce is not cleared
73780 ; timing factor? (dw)
0 ; timing factor finetune? (dw)
11053 ; helps decide if a tyre set needs changing? (dw)
18000 ; same as above (dw)
0 ; rain chance
6 ; segment nr (start of some range)
6 ; segment nr (end of some range)
256 ; another perf factor
13000 ; unk (dw)
233 ; unk (dw)
10000 ; unk (dw)
2048 ; unk (dw)
190 ; unk (dw)
120 ; new (dw)
80 ; new (dw)
80 ; new (dw)
0 ; new (dw)
1814 ; new (dw)
896 ; new (dw)
0 ; new (dw)
0 ; new (dw)
0 ; new (dw)
16384 ; unk (dw) (always 16384?)
16384 ; unk (dw) (always 16384?)
16384 ; unk (dw) (always 16384?)
16384 ; unk (dw) (always 16384?)
16384 ; unk (dw) (always 16384?)
16384 ; unk (dw) (always 16384?)
0 ; pitstop group 1 % This means 1 stop only
0 ; stop 1
0 ; pit window 1
0 ;
0 ;
0 ;
0 ;
0 ;
90 ; pitstop group 2 % This means, 90% of cars will make 2 stops
20 ; stop 1 This means, first stop at lap 20
7 ; pit window 1 This means the gap (laps 13 to 27)
40 ; stop 2 This means, second stop at lap 40
7 ; pit window 2
0 ;
0 ;
0 ;
10 ; pitstop group 3 % This means 10% of cars will make 3 stops
10 ; stop 1
2 ; pit window 1
20 ; stop 2
3 ; pit window 2
39 ; stop 3
2 ; pit window 3
0 ;
0 ; failure chance : suspension
0 ; failure chance : loosewheel
0 ; failure chance : puncture
0 ; failure chance : engine
1489 ; failure chance : transmission
1489 ; failure chance : oilleak/waterleak
744 ; failure chance : throttle/brake
0 ; failure chance : electrics
16368 ; unused
16256 ; unused
16128 ; unused
15872 ; unused
30208 ; bump factor
16 ; bump shift
[bumptable]
0,0
29,2
45,0
160,1
197,0
231,2
261,0
315,2
360,1
385,3
404,0
491,3
495,0
512,2
543,0
575,2
635,0
649,3
668,0
745,2
783,1
818,2
840,3
856,0