Who here is running an Ej20 on an Ej22T ECU?

[Matt Monson]

I am thinking about throwing one of my Ej20's into my car. I know I wouldn't get optimum performance from going with the Ej22T ECU, but was just curious about how it runs? Issues you encountered with this approach?

I have an under the manifold inlet and manifold along with the mounting for the wated spark, so that isn't an issue. I am mostly worried about overfueling at idle or part throttle as it rolls into boost because of the larger injectors on the Ej20's. Any thoughts?

And I am talking about JDM early Ej20's, so cam and crank sensors and gears aren't an issue. I wouldn't try this with an EJ205...

[tris91ricer]

I'm running the 20g on 22t, but I've got different heads and injectors, so I'm not sure if I can verify your exact setup, but afaik, I haven't had too many issues with fueling or anything.

[jake15]

i run 2.0 heads/mani/injectors on a 2.2 block for now. it definitely runs really rich, but drives really good, i just have to go to the gas station alot more

[555BCTurbo]

livestrong14 is running the 20g on 22t management setup, and still manages in the 20's on the freeway...

And the car straight hauls ass with a VF8 at 16 psi

[Matt Monson]

I was hoping that it wouldn't be too big of an issue. Sounds like it isn't. I have this gutt feeling that the oil pump on my EJ22T is on it's last legs. I hate doing timing belts and oil pumps with the engine in the car. IF, I am going to pull the engine, I figure, why not throw my 65k mi Ej20G in there. I could set it up with either stock plumbing and a TD04 or Ej20K plumbing and a VF29. Eventually, I will get around to wiring it for the JDM ECU, but I didn't want the car down for more than a weekend. This way, I can put in the Ej20 and then in a bit when I have some more time to fiddle, I can do the wiring for the other ECU...

[Matt Monson]

I have an addendum to add to this idea. I think I am going to run this engine on E85. The greater capacity of the injectors, coupled with the E85 should make for a pretty good set up. I know one guy running an 1990 Ej22e on E85. I am pretty sure he used the Ej22t pink tops for his set up. This Ej20 set up should be similar...

[555BCTurbo]

I saw an Evo make 698whp on E85...

I asked him what he did to make all the power, and he said just lots of boost and timing

[Matt Monson]

Yeah,
One of our local Colorado tuners is running E85 on his WRX/STI hybrid and is setting up a lot of cars to do the same. We are kind of a hot bed for E85 tuning so it seemed logical to explore it. I am also thinking about going E85 on my 914 w/Webers...