Change these values at the main menu before touching anything

25 combo medal
60 89 01 24 19 14 12 00 00
60 89 01 24 01 14 12 00 00

50 combo medal
60 89 01 24 32 14 12 00 00
60 89 01 24 02 14 12 00 00

75 combo medal
60 89 01 24 4b 14 12 00 00
60 89 01 24 03 14 0e 00 00

eco tank (no gas consumption)
66 8f 01 93 63 04
66 8f 01 02 63 04

upgrades add experience
46 07 01 a1 61 e1 05
46 07 01 a0 61 e1 05