M90 subie!
- Thread starter boosting98
- Start date
crshoveride
New member
i read through that install ya gotta love how he mounts it
Sabrewings
New member
Doesn't even look like the outlet is connected to anything...
Sabrewings
New member
Never mind. I looked at the thread. So much fail waiting to happen. Could've just slap a factory turbo on it. 
Scimmia
New member
I guess I can see why, those little engines need low end torque, this would help that more than a turbo. Ghetto doesn't even begin to describe it, though.
Brazing on a bbq grill? Not to mention those welds. If this guy was anywhere near me, I'd make a special trip to punch him in the face.
Brazing on a bbq grill? Not to mention those welds. If this guy was anywhere near me, I'd make a special trip to punch him in the face.
JoshMcMadMac
New member
That is not an issue with a properly sized turbo.
I actually helped this guy over on rs25.com figure out why his drive by wire wasn't working. 
And... Well... Subaru has a 3 liter flat 6. It has AVCS (similar to VTEC or MIVEC etc). Jeff Perrin, of Perrin Tuning, put forged internals in one, built the heads, and put a GT35 turbo on it. The motor was installed in an STi. It was sickeningly fast.
As for the 2.5i with the M90, yeah, it's a bit overkill. The M90 is made for 3.5 liters+, it's going to flow too much for the 2.5 liter motor it's on. If Spud (the guy who built it) lowers the compression and forges the internals, and ports the heads enough, he might get a usable setup out of it. The other problem is tuning, but shortly, COBB tuning should be releasing an easy to use (compared to what's currently available) tuning tool, the AccessPort, for the 2005+ NA Subarus. If he can get one of those, get a protune, and upgrade his injectors, Spud should be set.
The ONLY Subaru's that don't have lag are the twin scroll ones with AVCS, and they were only 2 liters and only available in Japan. Even the 2.5's have lag. My friend's 2008 EVO X with it's twin scroll turbo and superior heads (they flow 10-20% better than any Subaru head) has no lag, and he's putting 320 hp down at all four wheels.
And... Well... Subaru has a 3 liter flat 6. It has AVCS (similar to VTEC or MIVEC etc). Jeff Perrin, of Perrin Tuning, put forged internals in one, built the heads, and put a GT35 turbo on it. The motor was installed in an STi. It was sickeningly fast.
As for the 2.5i with the M90, yeah, it's a bit overkill. The M90 is made for 3.5 liters+, it's going to flow too much for the 2.5 liter motor it's on. If Spud (the guy who built it) lowers the compression and forges the internals, and ports the heads enough, he might get a usable setup out of it. The other problem is tuning, but shortly, COBB tuning should be releasing an easy to use (compared to what's currently available) tuning tool, the AccessPort, for the 2005+ NA Subarus. If he can get one of those, get a protune, and upgrade his injectors, Spud should be set.
The ONLY Subaru's that don't have lag are the twin scroll ones with AVCS, and they were only 2 liters and only available in Japan. Even the 2.5's have lag. My friend's 2008 EVO X with it's twin scroll turbo and superior heads (they flow 10-20% better than any Subaru head) has no lag, and he's putting 320 hp down at all four wheels.
Ice Blue La Crosse
New member
WOW!!!!!!!!!!!!!!
speedemongtp
New member
^ because turboing an na subie apparently never works quite right from what my subie friends tell me idr why though i think it was something with tuning and reliability or something. they say if its na go all motor dont try to turbo.
an as far as my opinion on this job it looks pretty ghetto rigged as it says. he should have left it alone. done intake exhaust and a tune and left it alone.
an as far as my opinion on this job it looks pretty ghetto rigged as it says. he should have left it alone. done intake exhaust and a tune and left it alone.