This is from the GGR website
Modifications List
Q# Question TT Points AX Points
Wheels [ more... ]
1. Wheels - Points automatically assessed based on the values input for wheel widths. [ more... ] 10 10
2. Car has non-stock wheel spacer more than .25" thickness. [ more... ] 5 10
Tires [ more... ]
3. a) Tires with DOT wear rating 200 or greater [ more... ] 0 0
b) Tires with DOT wear rating less than 200 but greater than 100. [ more... ] 25 25
c) Tires with DOT wear rating less than 101 but greater than 49. [ more... ] 50 50
d) Tires with DOT wear rating less than 50. [ more... ] 100 100
e) Racing slicks or tires with no DOT wear rating. [ more... ] 175 175
Brakes [ more... ]
4. Car has brake dust shields removed [ more... ] 0 0
5. Car has non-stock brake cooling system [ more... ] 0 0
6. Car has non-stock brake hoses [ more... ] 0 0
Brake Calipers [ more... ]
7. a) Car has stock brake calipers [ more... ] 0 0
b) Car has non-stock brake calipers [ more... ] 10 0
Brake Rotors [ more... ]
8. a) Car has stock or thicker brake rotors maintaining stock diameter [ more... ] 0 0
b) Car has brake rotors larger diameter than stock [ more... ] 10 0
c) Car has factory BRAKE UPGRADE kit that was an available option for this series, model and type [ more... ] 10 0
9. Car has non-stock brake master cylinder [ more... ] 5 5
10. Car has brake rotors made from non-stock material [ more... ] 20 5
11. Car has non-stock brake balance device [ more... ] 5 5
12. Car has non-stock ABS system or components [ more... ] 10 10
Battery [ more... ]
13. Car has smaller battery or battery removed [ more... ] 5 5
14. Car has battery re-located [ more... ] 5 5
Glass [ more... ]
15. Car has non-stock glazing [ more... ] 10 20
16. Car has window lift mechanism removed [ more... ] 5 10
Seats [ more... ]
17. a) Car has all original seats [ more... ] 0 0
b) Car has non-stock seats - with adjustable seat back angle [ more... ] 5 5
c) Car has one or more racing style seats. [ more... ] 10 10
Interior [ more... ]
18. a) Car has stock interior [ more... ] 0 0
b) Car has a complete interior - no untrimmed surfaces [ more... ] 5 10
c) Car has incomplete interior [ more... ] 10 20
Fenders [ more... ]
19. a) Car has stock fenders or fender lips rolled [ more... ] 0 0
b) Car has flared fenders added [ more... ] 10 10
c) Car has lightweight fenders added [ more... ] 30 30
20. Car has non-stock bumpers [ more... ] 20 20
Bodywork [ more... ]
21. Car has non-stock front hood [ more... ] 5 20
22. Car has non-stock rear hood. [ more... ] 5 20
23. Car has non-stock doors [ more... ] 20 20
24. Car has non-stock engine mounts. [ more... ] 5 5
25. Can has modified sunroof [ more... ] 5 5
26. Car has one or more windshield wipers removed [ more... ] 0 0
27. Car has ancillary systems modified or removed [ more... ] 5 5
28. Car has any part of a stock airconditioning system removed [ more... ] 5 5
Wings [ more... ]
29. a) Car has no rear spoiler or has a stock rear spoiler that was STANDARD EQUIPMENT as delivered on US-market cars of this model and type [ more... ] 0 0
b) Car has a Porsche REAR SPOILER that was a FACTORY OPTION for this model and type or an identical aftermarket replica. [ more... ] 5 0
c) Car has a stock rear spoiler originally from another model [ more... ] 10 0
d) Car has a rear aerodynamic device no taller than the roof, or wider than the body [ more... ] 20 5
e) Car has a rear aerodynamic device that does not comply with the other options. [ more... ] 30 10
f) Factory AEROKIT, turbo-look kit or slant-nose kit that was a FACTORY OPTION for that year, model and type. [ more... ] 5 0
Front Spoilers [ more... ]
30a. Car has a Porsche FRONT SPOILER which was a FACTORY OPTION for this model and type. [ more... ] 5 0
30b. Car has a non-stock front spoiler [ more... ] 10 5
Transmission [ more... ]
31. a) Car has a stock transmission [ more... ] 0 0
b) Car has a transmission with non-stock gear ratios or final drive [ more... ] 20 20
c) Car has a tiptronic or sportomatic transmission [ more... ] -15 -10
d) Car equipped with standard "Tiptronic S" transmission. [ more... ] -5 -5
e) Car has PDK transmission [ more... ] 15 15
32. Car is a 914 that has converted from tailshift to sideshift [ more... ] 0 0
33. Transmission has a limited slip differential, stock or non-stock [ more... ] 15 30
34. Transmission has a non-stock transmission cooler [ more... ] 0 0
Flywheel and Clutch [ more... ]
35. Engine has a non-stock flywheel [ more... ] 5 10
36. Select this option if the engine has any of the following: Engine has rubber center clutch replaced with spring center clutch [ more... ] 0 0
37. Engine has a clutch that is smaller than stock diameter [ more... ] 15 15
Engine Swaps [ more... ]
39. a) Engine is stock [ more... ] 0 0
b) Engine has same number of cylinders and comes from model in same series. [ more... ] 0 0
c) Engine has same number of cylinders but does not come from model in same series. [ more... ] 0 0
d) Engine has different # of cylinders - this # of cylinders was available in the model series. [ more... ] 0 0
e) Engine has different number of cylinders [ more... ] 100 100
Fuel and Intake [ more... ]
40. Engine must comply with CA smog laws but has equipment removed (includes Catalyst) [ more... ] 5 5
41. Car has fuel tank less than 15 gallons [ more... ] 0 0
42. Engine has throttle-body or other intake component different to stock [ more... ] 10 10
43. Air cleaner or housing, or air inlet ducting is not stock. [ more... ] 5 5
44. Complete induction system has been replaced with alternate system [ more... ] 15 15
Ignition and Engine Management [ more... ]
45. a) Engine has the stock ignition system [ more... ] 0 0
b) Engine management chip is not stock [ more... ] 5 5
c) Engine has non-stock rev limiter [ more... ] 5 5
d) Engine uses a non-stock engine management system [ more... ] 20 20
46. Engine has non-stock dual ignition.. [ more... ] 5 5
Forced Induction [ more... ]
47. a) Engine is normally aspirated [ more... ] 0 0
b) Engine has forced induction and is stock [ more... ] 0 0
c) The engine has forced induction and is not stock [ more... ] 50 50
d) The engine was normally aspirated and now has forced induction of any design. [ more... ] 50 50
48. The engine has forced induction and the boost level is not stock [ more... ] 50 50
49. The engine has injection of any fluid or gas other than gasoline [ more... ] 30 30
Compression Ratio [ more... ]
50. a) The engine has a compression ratio not more than 1.0 ratio point higher than stock [ more... ] 0 0
b) The engine has a compression ratio more than 1.0 ratio point higher than stock [ more... ] 30 30
Other engine modifications [ more... ]
51a. The engine has non-stock camshafts [ more... ] 25 25
51b. The cylinder heads have been ported [ more... ] 25 25
51c. The engine has been updated to Carrera oil pressure fed cam chain tensioners [ more... ] 0 0
51d. The engine has a non-stock oil cooler or water cooling system [ more... ] 0 0
51e. Factory optional non-turbo POWERKIT engine (i.e. X51) [ more... ] 25 10
51f. Factory-optional TURBO POWERKIT engine [ more... ] 30 5
51g. TURBO car has any factory option package not described in item 51f that raises maximum engine output [ more... ] 10 5
Mufflers (per engine type) [ more... ]
55. a) The engine has a stock muffler [ more... ] 0 0
b) The engine has a non-stock muffler [ more... ] 5 5
Exhaust Manifolds/Headers [ more... ]
56. a) The engine has stock heat exchangers or stock exhaust manifold [ more... ] 0 0
b) The engine has non-stock heat exchanger or exhaust manifold. [ more... ] 10 10
Suspension [ more... ]
57. The car has non-stock sway bars [ more... ] 20 30
58. The car has a non-stock front or rear strut tie bar [ more... ] 5 5
59. The car has non-stock Turbo tie rod ends [ more... ] 0 0
60. The car has steering rack spacers [ more... ] 0 0
61. The car has non-stock steering track rods - excluding Turbo tie rod ends. [ more... ] 10 10
62. The car has a Porsche SPORT suspension kit or a Porsche Active (PASM) suspension kit. [ more... ] 15 20
63. The car has non-stock power steering [ more... ] 5 5
64. The car has non-stock adjustable spring plates [ more... ] 5 10
65. The car has non-stock springs or torsion bars [ more... ] 30 45
66. The car has torsion bars replaced with coil springs, or coils springs added [ more... ] 10 10
67. The car has non-stock adjustable coil spring platforms [ more... ] 10 20
68. The car has non-stock front control arms (944 replacements OK) [ more... ] 10 15
69. The car has non-stock rear control arms [ more... ] 5 10
70. The car has non-stock spherical bearings - except strut top and sway bar drag link bearings. [ more... ] 10 15
71. The car has non-stock suspension pick-up locations [ more... ] 20 30
72. The car has non-stock strut tops [ more... ] 5 10
73. The car has any non-stock suspension parts not covered in other choices [ more... ] 10 20
74. The suspension has non-stock suspension bushes not covered in item 70 [ more... ] 5 15
Shock Absorbers [ more... ]
75. a) The car has shock absorbers with single external adjustment or no adjustability. [ more... ] 0 0
b) The car has shock absorbers with greater than one external adjustment [ more... ] 10 15
Home | classed tt cars | classed ax cars | car classes | car models | modifications
For questions or to report problems contact the Site Administrator
Modifications List
Q# Question TT Points AX Points
Wheels [ more... ]
1. Wheels - Points automatically assessed based on the values input for wheel widths. [ more... ] 10 10
2. Car has non-stock wheel spacer more than .25" thickness. [ more... ] 5 10
Tires [ more... ]
3. a) Tires with DOT wear rating 200 or greater [ more... ] 0 0
b) Tires with DOT wear rating less than 200 but greater than 100. [ more... ] 25 25
c) Tires with DOT wear rating less than 101 but greater than 49. [ more... ] 50 50
d) Tires with DOT wear rating less than 50. [ more... ] 100 100
e) Racing slicks or tires with no DOT wear rating. [ more... ] 175 175
Brakes [ more... ]
4. Car has brake dust shields removed [ more... ] 0 0
5. Car has non-stock brake cooling system [ more... ] 0 0
6. Car has non-stock brake hoses [ more... ] 0 0
Brake Calipers [ more... ]
7. a) Car has stock brake calipers [ more... ] 0 0
b) Car has non-stock brake calipers [ more... ] 10 0
Brake Rotors [ more... ]
8. a) Car has stock or thicker brake rotors maintaining stock diameter [ more... ] 0 0
b) Car has brake rotors larger diameter than stock [ more... ] 10 0
c) Car has factory BRAKE UPGRADE kit that was an available option for this series, model and type [ more... ] 10 0
9. Car has non-stock brake master cylinder [ more... ] 5 5
10. Car has brake rotors made from non-stock material [ more... ] 20 5
11. Car has non-stock brake balance device [ more... ] 5 5
12. Car has non-stock ABS system or components [ more... ] 10 10
Battery [ more... ]
13. Car has smaller battery or battery removed [ more... ] 5 5
14. Car has battery re-located [ more... ] 5 5
Glass [ more... ]
15. Car has non-stock glazing [ more... ] 10 20
16. Car has window lift mechanism removed [ more... ] 5 10
Seats [ more... ]
17. a) Car has all original seats [ more... ] 0 0
b) Car has non-stock seats - with adjustable seat back angle [ more... ] 5 5
c) Car has one or more racing style seats. [ more... ] 10 10
Interior [ more... ]
18. a) Car has stock interior [ more... ] 0 0
b) Car has a complete interior - no untrimmed surfaces [ more... ] 5 10
c) Car has incomplete interior [ more... ] 10 20
Fenders [ more... ]
19. a) Car has stock fenders or fender lips rolled [ more... ] 0 0
b) Car has flared fenders added [ more... ] 10 10
c) Car has lightweight fenders added [ more... ] 30 30
20. Car has non-stock bumpers [ more... ] 20 20
Bodywork [ more... ]
21. Car has non-stock front hood [ more... ] 5 20
22. Car has non-stock rear hood. [ more... ] 5 20
23. Car has non-stock doors [ more... ] 20 20
24. Car has non-stock engine mounts. [ more... ] 5 5
25. Can has modified sunroof [ more... ] 5 5
26. Car has one or more windshield wipers removed [ more... ] 0 0
27. Car has ancillary systems modified or removed [ more... ] 5 5
28. Car has any part of a stock airconditioning system removed [ more... ] 5 5
Wings [ more... ]
29. a) Car has no rear spoiler or has a stock rear spoiler that was STANDARD EQUIPMENT as delivered on US-market cars of this model and type [ more... ] 0 0
b) Car has a Porsche REAR SPOILER that was a FACTORY OPTION for this model and type or an identical aftermarket replica. [ more... ] 5 0
c) Car has a stock rear spoiler originally from another model [ more... ] 10 0
d) Car has a rear aerodynamic device no taller than the roof, or wider than the body [ more... ] 20 5
e) Car has a rear aerodynamic device that does not comply with the other options. [ more... ] 30 10
f) Factory AEROKIT, turbo-look kit or slant-nose kit that was a FACTORY OPTION for that year, model and type. [ more... ] 5 0
Front Spoilers [ more... ]
30a. Car has a Porsche FRONT SPOILER which was a FACTORY OPTION for this model and type. [ more... ] 5 0
30b. Car has a non-stock front spoiler [ more... ] 10 5
Transmission [ more... ]
31. a) Car has a stock transmission [ more... ] 0 0
b) Car has a transmission with non-stock gear ratios or final drive [ more... ] 20 20
c) Car has a tiptronic or sportomatic transmission [ more... ] -15 -10
d) Car equipped with standard "Tiptronic S" transmission. [ more... ] -5 -5
e) Car has PDK transmission [ more... ] 15 15
32. Car is a 914 that has converted from tailshift to sideshift [ more... ] 0 0
33. Transmission has a limited slip differential, stock or non-stock [ more... ] 15 30
34. Transmission has a non-stock transmission cooler [ more... ] 0 0
Flywheel and Clutch [ more... ]
35. Engine has a non-stock flywheel [ more... ] 5 10
36. Select this option if the engine has any of the following: Engine has rubber center clutch replaced with spring center clutch [ more... ] 0 0
37. Engine has a clutch that is smaller than stock diameter [ more... ] 15 15
Engine Swaps [ more... ]
39. a) Engine is stock [ more... ] 0 0
b) Engine has same number of cylinders and comes from model in same series. [ more... ] 0 0
c) Engine has same number of cylinders but does not come from model in same series. [ more... ] 0 0
d) Engine has different # of cylinders - this # of cylinders was available in the model series. [ more... ] 0 0
e) Engine has different number of cylinders [ more... ] 100 100
Fuel and Intake [ more... ]
40. Engine must comply with CA smog laws but has equipment removed (includes Catalyst) [ more... ] 5 5
41. Car has fuel tank less than 15 gallons [ more... ] 0 0
42. Engine has throttle-body or other intake component different to stock [ more... ] 10 10
43. Air cleaner or housing, or air inlet ducting is not stock. [ more... ] 5 5
44. Complete induction system has been replaced with alternate system [ more... ] 15 15
Ignition and Engine Management [ more... ]
45. a) Engine has the stock ignition system [ more... ] 0 0
b) Engine management chip is not stock [ more... ] 5 5
c) Engine has non-stock rev limiter [ more... ] 5 5
d) Engine uses a non-stock engine management system [ more... ] 20 20
46. Engine has non-stock dual ignition.. [ more... ] 5 5
Forced Induction [ more... ]
47. a) Engine is normally aspirated [ more... ] 0 0
b) Engine has forced induction and is stock [ more... ] 0 0
c) The engine has forced induction and is not stock [ more... ] 50 50
d) The engine was normally aspirated and now has forced induction of any design. [ more... ] 50 50
48. The engine has forced induction and the boost level is not stock [ more... ] 50 50
49. The engine has injection of any fluid or gas other than gasoline [ more... ] 30 30
Compression Ratio [ more... ]
50. a) The engine has a compression ratio not more than 1.0 ratio point higher than stock [ more... ] 0 0
b) The engine has a compression ratio more than 1.0 ratio point higher than stock [ more... ] 30 30
Other engine modifications [ more... ]
51a. The engine has non-stock camshafts [ more... ] 25 25
51b. The cylinder heads have been ported [ more... ] 25 25
51c. The engine has been updated to Carrera oil pressure fed cam chain tensioners [ more... ] 0 0
51d. The engine has a non-stock oil cooler or water cooling system [ more... ] 0 0
51e. Factory optional non-turbo POWERKIT engine (i.e. X51) [ more... ] 25 10
51f. Factory-optional TURBO POWERKIT engine [ more... ] 30 5
51g. TURBO car has any factory option package not described in item 51f that raises maximum engine output [ more... ] 10 5
Mufflers (per engine type) [ more... ]
55. a) The engine has a stock muffler [ more... ] 0 0
b) The engine has a non-stock muffler [ more... ] 5 5
Exhaust Manifolds/Headers [ more... ]
56. a) The engine has stock heat exchangers or stock exhaust manifold [ more... ] 0 0
b) The engine has non-stock heat exchanger or exhaust manifold. [ more... ] 10 10
Suspension [ more... ]
57. The car has non-stock sway bars [ more... ] 20 30
58. The car has a non-stock front or rear strut tie bar [ more... ] 5 5
59. The car has non-stock Turbo tie rod ends [ more... ] 0 0
60. The car has steering rack spacers [ more... ] 0 0
61. The car has non-stock steering track rods - excluding Turbo tie rod ends. [ more... ] 10 10
62. The car has a Porsche SPORT suspension kit or a Porsche Active (PASM) suspension kit. [ more... ] 15 20
63. The car has non-stock power steering [ more... ] 5 5
64. The car has non-stock adjustable spring plates [ more... ] 5 10
65. The car has non-stock springs or torsion bars [ more... ] 30 45
66. The car has torsion bars replaced with coil springs, or coils springs added [ more... ] 10 10
67. The car has non-stock adjustable coil spring platforms [ more... ] 10 20
68. The car has non-stock front control arms (944 replacements OK) [ more... ] 10 15
69. The car has non-stock rear control arms [ more... ] 5 10
70. The car has non-stock spherical bearings - except strut top and sway bar drag link bearings. [ more... ] 10 15
71. The car has non-stock suspension pick-up locations [ more... ] 20 30
72. The car has non-stock strut tops [ more... ] 5 10
73. The car has any non-stock suspension parts not covered in other choices [ more... ] 10 20
74. The suspension has non-stock suspension bushes not covered in item 70 [ more... ] 5 15
Shock Absorbers [ more... ]
75. a) The car has shock absorbers with single external adjustment or no adjustability. [ more... ] 0 0
b) The car has shock absorbers with greater than one external adjustment [ more... ] 10 15
Home | classed tt cars | classed ax cars | car classes | car models | modifications
For questions or to report problems contact the Site Administrator