ST205 WRC Swap ST165, Old news, but new to 6G Options

[MR2Guru]

nice swap ! that's a great upgrade from the 165 !

I'm definitely in love. Its been so fun, its hard to convince myself to further modify it! I would have loved to have the ST205 rear diff, but maybe I will acquire that in the future. I do now have the option to bolt on the GReddy 20g, but I cant yet afford engine management so that is on hold for the time being. I cant imagine how fun it could be then!

[MR2Guru]

Quick question, to those other WRC engines/cars..... Where is your fuel cut? Speed Cut? My car wont fuel cut til 20psi *shrug* I hear this should be 17-18psi. Tested 2 different boost gauges, same results. Could be due to my elevation maybe. I havent hit speed cut yet. I have had her up to 148mph (looked like 150), but never hit speed cut. Not sure if there even is one. I have yet to determine if my WRC engine is UK or JP spec.

Thanks!

[_Jim_]

You can put the 20G on now without any engine management necessary. There is plenty of power to be had going from the stock 20b to the 20g, and your stock 550s will handle the new turbo without any problems. Put it on, send it to the dyno, and turn up the boost!

As far as boost cut, mine seems to be around 20psi as well....I stated it in my swap thread, but I thought it just had to do with the map sensor not reading/sending signal to the ecu as fast as my Autometer boost gauge could read 20psi......Maybe its a WRC thing. I installed a FCD on my setup and still have to adjust it to eliminate boost cut COMPLETELY.