Toyota MR2 Message Board - View Single Post - 3S-GTE JDM 3rd Gen Turbo Engine Gen3 Debate

rhouck · 02-28-2005, 09:13 PM

Nice article, thank you. However, I would say one big piece missing from your analysis is why someone should buy a Gen3 motor over a JDM Gen2 motor. A lot of your argument appears to revolve around the idea that a clip will give you newer lower mileage components.... but this will be the case with a Gen2 motor as well. So what needs to be answered is not USDM vs JDM, but JDM Gen2 vs JDM Gen3.

Now I would say the biggest reasons I would pick one over a Gen2 would be:
- ct20b: a stock turbo that completely transforms the driving experience; quite possibly the perfect turbo for 95% of owners and finally gives the MR2 the sports car performance feeling it should have had from the beginning
- no AFM
- 540 injectors w/ corresponding fuel rail

If I were to do it over again, I wish I had a Gen3 motor in my car versus the Gen2, especially as I already upgraded to a ct20b and now look to install a PowerFC, swap in larger injectors, etc

I will say the octane difference is an issue worth considering. In my experience, the motors do not really run correctly with less than 94 octane fuel.

02-28-2005, 09:13 PM	#2 (permalink)
rhouck enter witty title here Join Date: Feb 2005 Location: Sammamish, WA / Washington, DC Posts: 711 Thanks: 0 Thanked 4 Times in 2 Posts iTrader Rating: (0/0% )	Nice article, thank you. However, I would say one big piece missing from your analysis is why someone should buy a Gen3 motor over a JDM Gen2 motor. A lot of your argument appears to revolve around the idea that a clip will give you newer lower mileage components.... but this will be the case with a Gen2 motor as well. So what needs to be answered is not USDM vs JDM, but JDM Gen2 vs JDM Gen3. Now I would say the biggest reasons I would pick one over a Gen2 would be: - ct20b: a stock turbo that completely transforms the driving experience; quite possibly the perfect turbo for 95% of owners and finally gives the MR2 the sports car performance feeling it should have had from the beginning - no AFM - 540 injectors w/ corresponding fuel rail If I were to do it over again, I wish I had a Gen3 motor in my car versus the Gen2, especially as I already upgraded to a ct20b and now look to install a PowerFC, swap in larger injectors, etc I will say the octane difference is an issue worth considering. In my experience, the motors do not really run correctly with less than 94 octane fuel.