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» Model Guide: 1G vs. 2G Comparison |
This page used to be available courtesy of DarkLightning.com. It is no longer online, and we've salvaged it here.
| Year |
90 |
91 |
92 |
92.5 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
| Generation |
Early 1G |
Late 1G |
Early 2G |
Late 2G |
| MAS / MAF |
Less air flow |
More air flow |
| SMIC |
Larger core, smaller inlet/outlet |
Smaller core, larger inlet/outlet |
| BOV |
Steel |
Plastic |
| Throttle Body Eblow |
Smaller |
Larger |
| Throttle Body |
60mm |
52mm |
| Intake Manifold |
Larger |
Smaller |
| Cylinder Head Ports |
Larger, more air flow |
Smaller, less air flow |
| Combustion |
Less efficient |
More efficient |
| Fuel Injectors |
M/T 450cc, A/T 390cc |
450cc |
| Connecting Rods |
Big |
Small |
| Compression |
7.8 : 1 |
8.5 : 1 |
| Flywheel |
6-bolt |
7-bolt |
| Ex. Manifold |
Less air flow |
More air flow |
| Turbo |
M/T 14B, A/T 13G |
T-25 |
| O2 Housing |
Less air flow |
More air flow |
| Rear Differential |
3-bolt |
4-bolt |
| Suspension System |
Stronger |
More agile |
| ABS |
Worse |
Decent |
Better |
| Front Calipers |
Single piston |
FWD Single piston, AWD Dual piston |
| Front Rotors |
10.2 |
FWD 10.2, AWD 11 |
| Rear Calipers |
Single piston |
* |
Single piston |
| Rear Rotors |
10.5 |
* |
10.5 |
| Wheels |
16 |
FWD 16, AWD 17 |
| Oil Cooler |
Air |
Water |
| E-PROM ECU |
Some |
Most |
None |
| Crankwalk |
Almost completely unheard-of |
20% to 35% |
* = Some early 1995 rear rotors were larger and vented with different calipers.
Anything not mentioned means the 1G and 2G counterparts are roughly similar or I forgot to mention it.
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