Tier Breakdown 
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Acura
Chrysler
Honda
Mazda
Mini
Mitsubishi
Nissan/Infiniti
Subaru
Toyota
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 92-95 Integra | NA | NA | $400 | $500 | $700 |
96-99 Integra | NA | NA | $400 | $500 | $700 |
00-01 Integra | NA | NA | $400 | $500 | $700 |
02-04 Integra/RSX* | NA | NA | $400 | $500 | $700 |
02-04 Integra/RSX Type S* | NA | NA | $400 | $500 | $700 |
91-94 NSX | NA | NA | $400 | $500 | $700 |
| Plug & Play, Parallel with Factory ECU | Alpha | Beta | Gamma | Delta | Epsilon |
| Neon SRT | NA | NA | $400 | $500 | $700 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 92-95 Civic / Del Sol | NA | NA | $400 | $500 | $700 |
96-98 Civic / Del Sol | NA | NA | $400 | $500 | $700 |
99-00 Civic | NA | NA | $400 | $500 | $700 |
01-02 Civic | NA | NA | $400 | $500 | $700 |
02-03 Civic Si | NA | NA | $400 | $500 | $700 |
92-95 Prelude | NA | NA | $400 | $500 | $700 |
96-01 Prelude | NA | NA | $400 | $500 | $700 |
00-03 S2000**** | NA | NA | $400 | $500 | $700 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 90-95 Miata | NA | NA | $400 | $500 | $700 |
96-97 Miata | NA | NA | $400 | $500 | $700 |
99-00 Miata | NA | NA | $400 | $500 | $700 |
01-02 Miata w/VVT | NA | NA | $400 | $500 | $700 |
03-05 Miata w/VVT | NA | NA | $400 | $500 | $700 |
03-05 Miata Mazdaspeed | NA | NA | $400 | $500 | $700 |
| Plug & Play, Parallel with Factory ECU | Alpha | Beta | Gamma | Delta | Epsilon |
| 03-06 Mini Cooper S | NA | NA | $500 | $600 | $800 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 90-96 3000GT SL (non-Turbo) | NA | NA | $400 | $500 | $700 |
95-02 Evolution III-VII (JDM, UK) | NA | NA | $400 | $500 | $700 |
00-04 Eclipse V6 | NA | NA | $400 | $500 | $700 |
95-99 Eclipse Turbo | NA | NA | $400 | $500 | $700 |
Evolution 3-4 (JDM,UK) | NA | NA | $400 | $500 | $700 |
Evolution 5-6 (JDM,UK) | NA | NA | $400 | $500 | $700 |
03-04 Evolution VIII MR | NA | NA | $400 | $500 | $700 |
05 Evolution VIII MR | NA | NA | $400 | $500 | $700 |
06 Evolution IX w/VVT | NA | NA | $400 | $500 | $700 |
Plug & Play, Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 08 EVO X Wire In*** | NA | NA | $500 | $600 | $800 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 92-03 Skyline GTR/GTS | NA | NA | $400 | $500 | $700 |
Silvia S14 (Special Order) | NA | NA | $400 | $500 | $700 |
Silvia S15 (Special Order) | NA | NA | $400 | $500 | $700 |
Plug & Play, Parallel with Factory ECU | Alpha | Beta | Gamma | Delta | Epsilon |
| 03-05 350Z* | NA | NA | $500 | $600 | $800 |
| 03-05 Infiniti G35* | NA | NA | $500 | $600 | $800 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 94-96 WRX (JDM, UK) | NA | NA | $400 | $500 | $700 |
97-98 WRX (JDM, UK) | NA | NA | $400 | $500 | $700 |
99-00 WRX (JDM, UK) | NA | NA | $400 | $500 | $700 |
02-04 WRX (JDM, UK) | NA | NA | $400 | $500 | $700 |
02-04 WRX clsd loop AVCS (JDM, UK) | NA | NA | $400 | $500 | $700 |
02-04 WRX Sti (JDM, UK) | NA | NA | $400 | $500 | $700 |
02-04 WRX Sti clsd loop AVCS (JDM, UK) | NA | NA | $400 | $500 | $700 |
05-10 WRX (JDM, UK) | NA | NA | $400 | $500 | $700 |
05-10 WRX clsd loop AVCS (JDM, UK) | NA | NA | $400 | $500 | $700 |
05-10 WRX Sti (JDM, UK) | NA | NA | $400 | $500 | $700 |
05-10 WRX Sti clsd loop AVCS (JDM, UK) | NA | NA | $400 | $500 | $700 |
99-02 1.6TS (JDM, UK) | NA | NA | $400 | $500 | $700 |
99-02 2.5RS (USDM) | NA | NA | $400 | $500 | $700 |
03-05 2.5RS (USDM) | NA | NA | $400 | $500 | $700 |
02-05 WRX (USDM) | NA | NA | $400 | $500 | $700 |
Plug & Play, Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 04-06 WRX Sti DBW (USDM) | NA | NA | $500 | $600 | $800 |
06-07 WRX DBW (USDM) | NA | NA | $500 | $600 | $800 |
06-07 WRX Sti DBW (USDM) | NA | NA | $500 | $600 | $800 |
Plug & Play, Parallel with Factory ECU | Alpha | Beta | Gamma | Delta | Epsilon |
| 08 WRX DBW (USDM) | NA | NA | $500 | $600 | $800 |
08 WRX Sti DBW (USDM) | NA | NA | $500 | $600 | $800 |
| Plug & Play, Non Drive-By-Wire Throttle | Alpha | Beta | Gamma | Delta | Epsilon |
| 90-95 MR2 | NA | NA | $400 | $500 | $700 |
90-93 Celica All Trac | NA | NA | $400 | $500 | $700 |
02-04 Matrix XR/XRS | NA | NA | $400 | $500 | $700 |
02-04 Corolla S | NA | NA | $400 | $500 | $700 |
00-02 Celica GT | NA | NA | $400 | $500 | $700 |
00-02 Celica GTS | NA | NA | $400 | $500 | $700 |
00-02 MR2 Spyder | NA | NA | $400 | $500 | $700 |
89-91 Supra Turbo | NA | NA | $400 | $500 | $700 |
94-97 Supra TT | NA | NA | $400 | $500 | $700 |
Plug & Play, Parallel with Factory ECU | Alpha | Beta | Gamma | Delta | Epsilon |
| 03-05 Celica GT DBW | NA | NA | $400 | $500 | $700 |
03-05 Celica GTS DBW | NA | NA | $400 | $500 | $700 |
03-05 MR2 Spyder DBW | NA | NA | $400 | $500 | $700 |
Scion Tc*** | NA | NA | $400 | $500 | $700 |
**Parallel w/factory ECU controlling dash functions; hydra has full control of engine (inc "DBW" & closed loop VVT by Crank degrees).
***Parallel w/factory ECU controlling dash functions and DBW,; Hydra has full control of engine excluding DBW.
****Coolant gauge doesn't work.