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I have owned several of each motors. I would have to say the gen3 is a much better motor than the gen2. As someone mentioned above the jdm gen2's will have low mileage, however their mileage most likely will not be as low as a gen3. Age tends to have more impact on most vehicles rather than mileage. I would rather have something that has been lightly used than something that has just sat. The gen3 has better performance with intake and exhaust than a gen2 with vpc, boost control, intercooler, flywheel, exhaust, and intake. It will also be far more reliable. I do feel the gen2 is a good motor but it requires a lot more tweaking with less reliability to get the power you can simply get from a gen 3 with intake and exhaust. If you are shooting for 400whp then it really doesn't matter where you start. Obviously the gen2 will be cheaper. It seems to me that most of the guys who talk down on the gen3 don't have one and have probably never driven one. They like to justify spending fortunes on their gen2 by saying the gen3 is not that great of a motor. A friend of mine spent 10k about 4 years ago on building his gen2. I tried to convince him otherwise and tried to talk him into going gen3. Needless to say he didn't listen. Obviously 4 years ago there weren't many EMS 's available. He had a vpc, SAFC, intercooler, 550cc injectors, supra fuel pump, JE pistons, Crower rods, ported head, Metal headgasket, jun flywheel, upgraded 57 trim ct26, upgraded valves, springs, retainers, gutted tvis basically most of the products available back then to run decent numbers. When all was said and done at 19 psi and 5000ft above sea level he ran a best of 13.5. I have not had my gen3 out to the track but my friend did. He ran a 13.2 with intake exhaust and intercooler @ 17psi on a gen3.
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