People will undoubtedly be making the swap but if you need other parts to make it work, it's not as simple as it would seem.
Other things to consider, how is the Ralliart fuel system setup?

 

I'm willing to bet the fuel system is the same since the Ralliart is getting the same poor gas mileage as the EVO and at has a boost peak of almost 20 psi which is pretty close to the EVO's peak boost. I look at it this way. The engines are the same so swapping parts should be relatively simple. I swapped a few turbos back and forth between 1G 6-bolt DSM's and 2G 7-bolt DSM's and those cars had many more differences than the EVO X and Ralliart.

 

Quote:

Originally Posted by ambystom01

If you have to upgrade other parts to make it work, it's not a bolt-on part in the truest sense of the term.

Ok so then it's two bolt ons?

No internal work is needed, and it's a direct swap. It's a bolt-on.

And if the Ralliart has a different turbo i would assume the Evo X's aftermarket downpipes are a no go.

 

Doesn't mean the fuel system is the same, it just means that both have crappy tunes. 20 PSI on a small turbo is also substantially different from 20 PSI on a big turbo.

 

You'll need to replace the turbo, the intercooler, the intercooler piping, if the downpipes are different the exhaust system and if the fuel system is different the fuel system. It's the same on the WRX, I can just bolt the STI turbo in but to get it to work the way it's meant to, I need a TBE, the intercooler and the splitter.

 

I understand that. I'm just saying that stuff is bolt-on.

 

I mean I am a little taken back that the fact that the turbo is hittin 20psi and that might be the reason why the fuel is not that great.

I was thinking along the lines or 12-15-psi.
Doesn't sometime turbos actually help you get better fuel management?
If it's spiking correctly with the way the car is set up?

 

Turbos were originally designed to increase fuel efficiency. The spike could be because of a delay between the closed loop and open loop maps.

 

Well since the EVO X and Ralliart both use small turbos what's your point? The only difference between the turbos is that one is more efficient and will maintain flow at higher RPM's.

 

The Evo X uses a significantly larger turbo than the Ralliart. The Ralliart likely uses a similar turbo the older WRX which is smaller than the VF39/43 which is itself dwarfed by the 16G in the Evo.

 

well another well informed racer
Many car would blow engine with that small X turbo

Just for understanding what i'm saying , it is an O2 housing comparison with the IX turbo set up :



probably you can insert the RA O2 housing inside the X O2 housing.

 

as i heard even the IC set up swap is difficult. Also if you swap it why not upgraded it?
Why buy factory?
maybe the fuel system is a same but how the RA SST will react the bigger turbo? i'm sure it have a bigger lag. So even when you shift it might will fall under the desired RPM range for the new turbo set up.ETC.

 

They made the O2 sensor housing larger and with a more tubular design but the actual turbocharger itself is still based on the 16G which isn't a large turbo. The size of cast housings has nothing to do with the size of the turbocharger. Really No use speculating on how small the Ralliart turbocharger and exhaust is until we see it out.

 

The Evo turbo is based on the 16G but it's a pretty big 16G. It's not a small turbo, it's best classified as a medium turbo.

 

and it is much bigger then a RA. no speculation there , just from you only. It is a fact.

Not just a size is important. More important how much air can pass through it.
And there is where the X turbo design shines
It is a "same" size as a IX but flows much better./as the Mitsubishi tecnician guide stated/
And the tuned numbers