Looking for Twin Turbo Setup Suggestions for Subaru EZ30

Dustin_TheFordPro

Dustin_TheFordPro

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Hey everyone, I just picked up a “new to me” Funco Gen 4 with an NA EZ30 six cylinder Subaru in it. So far the car has been awesome, not bad for around 250 hp.

That said, I’m wanting a little bit more power. My last car had a turbo 2.5 making about 430 hp at the crank, and I’d like to be in that 400-450 hp range with this setup.

From what I understand, you can get around that number with something like 6 psi of boost. But I want to do things a little differently, I’m interested in a twin turbo setup.

I know some people will say it’s not worth it or unnecessary, but I want to price it out realistically and be reasonable about it:
  • I don’t need $2500 turbo's to make 6 psi or am I wrong?
  • What turbo size and brands are realistic and affordable for this power goal?
  • Who would you recommend for building a twin turbo kit in SoCal?
Thanks in advance!

This video gave me the idea...
View attachment ScreenRecording_02-22-2026 15-16-52_1.mov94AD8FD6-3500-4195-B458-029E530856F3_4_5005_c.jpeg
 
Went down this road with mine. Went single turbo and can get a reliable 600hp out of a 3.0.
Next step is johns 3.2 that has turbo cams.
14 lbs boost gets ya close to 750 hp.
 
Yeah, that’s good to know. Honestly, my goal is a reliable 450–500 hp. I’m just trying to bring my Gen 4 up to the level my 2.5 Gen 3 was at in terms of power. That car, at 430 hp, was a rocket in the dunes. I’m not concerned with straight line speed, I just want that low end, dune crushing power.
 
Dustin_TheFordPro said:
Yeah, that’s good to know. Honestly, my goal is a reliable 450–500 hp. I’m just trying to bring my Gen 4 up to the level my 2.5 Gen 3 was at in terms of power. That car, at 430 hp, was a rocket in the dunes. I’m not concerned with straight line speed, I just want that low end, dune crushing power.
Click to expand...
I know exactly what your wanting.
 
More or less I’m trying to figure out what turbos I need to make about 6 psi of boost and spool quick. It just feels like spending $2,500 per turbo is a bit much for the low power I'm going after.
 
Single turbo is all you need. Your 2.5 was single and I'm sure a lot more boost.
Kiss....
Keep
It
Stupid
Simple
 
When I was shopping for my turbo, my buddy referred me to ATP turbo. I gave them all my motor specs and they made a recommendation based on that. I have been super happy with it. Cant hurt to shoot them an email and see what they say.
 
450-500whp is only 225-250whp per turbo. This could easily be done on two GT28s, 0.64 A/R, and spool like a light switch.

That being said, the single will spool just as fast (possibly faster) and be simpler.

Also: merge the exhaust or it'll sound blatty.
 
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