Grand Prix Legends Setup File Format by P.A.Flack 1999
contact: phil@flack99.freeserve.co.uk
last revised 11/Nov/1999

>> Thanks to Brian Heiland, there are now only 8 unknowns (the 800.0's and 7.0's) as opposed to 19.

The setup files are all the files within the players directory such as *.lo1, *.fe2, *.mu1, *.lo3, etc.  They contain the settings for tire pressures, toe in angles, etc.  I've only worked on the G1 settings, so there may be quite drastic changes between these and the G2 & G3 cars - most noticeable in the gears.
 

Bytes Values Notes
0-3 
4-7 
8-11 
12-		 "PGTS" 
2 or 3 
Data size 
data...		 File type, reversed to STGP (settings Grand Prix?) 
File sub-type, either 2 or 3 
Size of following data (depends on sub-type) 

The rest of the file looks like this (Type: FL=float, Int=integer, Byte=8bit integer) (What? FL=Front left, FR=Front right, RL=Rear left, RR=Rear right).

The last four bytes only appear if the sub-type (bytes 4-7) is 3.  If it is 2, the last four bytes don't exist.   Strange...
 

Bytes Type What?
12-15 
16-19 
20-23 
24-27 
28-31 
32-35 
36-39 
40-43 
44-47 
48-51 
52-55 
56-59 
60-63 
64-67 
68-71 
72-75 
76-79 
80-83 
84-87 
88-91 
92-95 
96-99 
100-103 
104-107 
108-111 
112-115 
116-119 
120-123 
124-127 
128-131 
132-135 
136-139 
140-143 
144-147 
148-151 
152-155 
156-159 
160-163 
164-167 
168-171 
172-175 
176-179 
180-184 
184-187 
188-191 
192-195 
196-199 
200-203 
204-207 
208-211 
212-215 
216-219 
220-223 
224-227 
228-231 
232-235 
236-239 
240-243 
244-247 
248-251 
252-255 
256-259 
260 
261 
262 
263		 FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
Int 
Int 
Int 
Int 
Int 
Int 
Int 
Int 
Int 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
Int
Int 
Int 
Int 
Int 
Int 
Int 
Int 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
FL 
Int 
FL 
FL 
Int 
Byte 
Byte 
Byte 
Byte		 Reverse Gear (-2.6923) 
Neutral Gear (0) 
1st Gear 
2nd Gear 
3rd Gear 
4th Gear 
5th Gear 
6th Gear 
Differential Ratio 
Reverse GearSet 
Neutral GearSet
1st GearSet
2nd GearSet 
3rd GearSet
4th GearSet 
5th GearSet 
6th GearSet 
GearSet Differential
Ramp angle (2nd value) 
Ramp angle (1st value) 
Tire pressure FL 
Tire pressure FR 
Tire pressure RL 
Tire pressure RR 
Wheel rate FL 
Wheel rate FR 
Wheel rate RL 
Wheel rate RR 
Bump FL 
Bump FR 
Bump RL 
Bump RR 
Rebound FL 
Rebound FR 
Rebound RL 
Rebound RR 
Camber FL 
Camber FR 
Camber RL 
Camber RR 
Unknown (800.0)(tire readings?) 
Unknown (800.0)(tire readings?) 
Unknown (800.0)(tire readings?) 
Unknown (800.0)(tire readings?) 
Unknown (7.0)(tire readings?) 
Unknown (7.0)(tire readings?) 
Unknown (7.0)(tire readings?) 
Unknown (7.0)(tire readings?) 
Bump rubber FL 
Bump rubber FR 
Bump rubber RL 
Bump rubber RR 
Toe in Front 
Toe in Rear 
Roll Bar Front 
Roll Bar Rear 
Ride Height Front 
Ride Height Rear 
No. of clutches 
Gallons of fuel 
Steering Ratio (n:1) 
Front Brake Bias 
Asymmetrical Edit (0= tick in game, 1=cross) 
0x20 
0x20 
0x20
And now for the gearsets:
ID Values Calculated
0
1
2
3
4
5
6
7
8
9
---
10
11
12
13
14
15
16
17
---
18
19
20
21
22
23
24
---
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
---
86
87
88
89		 13/46
14/46
14/45
12/35
13/35
16/42
15/38
14/34
14/33
14/32
------
16/42
15/38
14/34
17/41
14/33
14/32
15/33
16/31
------
15/32
15/31
16/32
16/30
17/31
17/30
17/29
------
14/34
17/41
14/33
14/32
15/33
15/32
15/31
16/32
16/31
20/38
16/30
17/31
17/30
17/29
20/34
18/30
18/29
18/28
19/29
21/32
19/28
18/26
19/27
24/34
20/28
21/29
24/33
25/34
20/27
24/32
25/33
19/25
23/30
21/27
25/32
26/33
19/24
23/29
25/31
21/26
26/32
19/23
24/29
27/32
22/26
25/29
19/22
27/31
28/32
22/25
25/28
27/30
28/31
29/32
22/24
24/26
25/27
23/24
24/24
25/24
26/24
------
7/31
8/31
9/31
10/31		 3.5385
3.2857
3.2143
2.9167
2.6923
2.625
2.5333
2.4286
2.3571
2.2857
-------
2.625
2.5333
2.4286
2.4118
2.3571
2.2857
2.2
1.9375
-------
2.1333
2.0667
2
1.875
1.8235
1.7647
1.7059
-------
2.4286
2.4118
2.3571
2.2857
2.2
2.1333
2.0667
2
1.9375
1.9
1.875
1.8235
1.7647
1.7059
1.7
1.6667
1.6111
1.5556
1.5263
1.5238
1.4737
1.7647 ?
1.7059 ?
2.4286 ?
1.4
1.3810
1.375
1.36
1.35
1.3333
1.32
1.3158
1.3043
1.2857
1.28
1.2692
1.2632
1.2609
1.24
1.2381
1.2308
1.2105
1.2083
1.1852
1.1818
1.16
1.1579
1.1481
1.1429
1.1364
1.12
1.1111
1.1071
1.1034
1.0909
1.0833
1.08
1.0435
1
1.0417
1.0833
-------
4.4286
3.875
3.4444
3.1
Last 4 are differentials.  Not sure about the few out of sequence values in the middle (nos. 46-48)

contact: phil@flack99.freeserve.co.uk
last revised 11/Nov/1999