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GR-Exhaust

Discuss different topics related to the STI's exhaust system.
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9.5M
32.9K
9.5M

GR-Tires & Wheels

Research STI Tires & STI Wheels Discuss wheels, tires, locks, & lugs, etc...
36.1K
13.5M
36.1K
13.5M

GR-Suspension, Handling, Stiffening

Research STI Suspension Wheels, & Tires Discuss things related to springs, struts, coilovers, end links, lateral links, unsprung weight, chassis stiffening, etc... Sponsored by: Tire Rack
38.3K
11.6M
38.3K
11.6M

GR-Braking

Discuss things related to rotors, pads, lines, big brake kits, brake fluid, etc...
7.3K
2.8M
7.3K
2.8M

GR-Engine, Power, & Performance

Discuss the power and performance related to the 2.5L Factory Motor

GR-ECU Tuning & Performance Electronics

Discuss things like ECU related electronics and data monitors, etc..

GR-Exterior

Discuss things related to car care & detailing, body kits, lips, spoilers, headlights, tail lights, etc...
40.5K
15M
40.5K
15M

GR-Interior

Discuss harnesses, seats, steering wheels, carpet, mats, etc...BUT NO Performance Electronics, Audio or Security.
22.8K
8.2M
22.8K
8.2M

GR-ICE/Security

Discuss things related to audio, video, nav, security, etc...
13.5K
5M
13.5K
5M
got2boostit2
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E85 VS water methanol injection
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wheel spacers
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GR-General
Discussion for general 08+ STIs. Please use the technical subforums for specific 08+ STI topics.
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