Winning the 25 Hours of Thunderhill endurance race is no easy feat. Doing it
in a nearly stock luxury sedan is almost unheard of. But that's what Team
Honda Research did in December of 2004. Built and driven by members of Honda
R&D Americas, the TL was largely stock. Modifications included a custom
exhaust header from Prototype Engineering, and exhaust system aluminum flywheel
and heavy-duty clutch from Comptech, and custom springs and shocks from H&R
Special Springs. The Progress Group supplied an adjustable rear anti-roll bar.
The lightly modified TL won its class, finishing 49 laps ahead of the second
place car, and came in third overall.
| Powertrain Modifications |
Prototype Engineering custom header |
| . |
Custom cold air intake |
| . |
Comptech exhaust system |
| . |
Comptech aluminum flywheel |
| . |
Comptech heavy-duty clutch |
| Chassis/Suspension Modifications |
H&R Special Springs custom coilovers |
| . |
Progress Group 26 mm adjustable rear anti-roll bar |
| . |
SPC Performance adjustable camber ball joints and links |
| . |
17x8 Enkei wheels |
| . |
255/40R-17 Toyo Proxes RA-1 tires |
| Exterior Modifications |
Acura TL A-SPEC body kit |
| . |
Custom two-tone white and blue fade paint |
| Interior Modifications |
Recaro Pro Racer HANS SPG seat |
| . |
Schroth Profi HANS 6-point racing harness |
| . |
Custom safety cage |
| . |
All interior trim and sound deadening removed except instrument panel |
| . |
Custom carbon fiber panel in place of radio/HVAC controls |
| . |
Keyless ignition |
| . |
XT-Racing lap timer |
| . |
Momo Mod-89 steering wheel with quick release hub |