- Bill Bailed on the Sky forum
- Question for HAHN Owners
- GMPP Turbo Upgrade & PPC Tune?
- Paging Bill Hahn Jr
- GXP90 Update
- BSR PPC Tune Updates?
- Pontiac 2.0 Turbo goes 10.58 @ 139!
- On the cover of HCI magazine
- RPM cutoff ???....
- Hahn Cobalt SS/TC with LNF Turbo engine goes 13.20
- "S20G Turbo Upgrade"
- Summer TurboSystem Blowout for Forum Members!
- Stage II..on Steroids!
- Low-Speed Turbo response...better than you've been told!
- Best SALE Price Ever on the Best Intercooler for GXP and RL!
- Billet Blow-Off Valve System for GXP & RL
- Hahn Turbo 2.0 Ecotec: 440 WHP, Pump Gas
- Hahn GXP Intercooler New Feature!
- Solstice-Sky Power Steering Upgrade
- Pontiac Enthusiast Magazine shows off the Hahn car, also
- HCI Magazine Hahn RaceCraft TurboSystem Installation
- Heat Shield....
- Mod Compatible with BSR Tune?
- Solstice Forum Clutch Sale!
- Stage 2 Tune for GXP
- Welcome HahnRacecraft