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What Is Red-Eyes Turbo?

What new turbo is best for my 2004 Subaru WRX?

  • At some point in time my Subaru's turbo is going to die, as it's leaking oil now. I don't have to rush out and do it immediately, fortunately, which affords me an opportunity: I would like to know what my options are to replace it with a turbo that works at lower RPM's and is less laggy. Can the turbo be replaced at all, or do I have to just get another stock turbo? I'd imagine this combination would call for a much smaller turbo than the current turbo. It's a 2.0 liter engine, and I think the stock turbo is too big. I believe the engine is 135hp with the turbo adding a whopping 90hp... If it spooled up at lower RPM's and had less lag I'd be happy with a turbo that only went up to 180 or so HP. I don't think the top rev's(4K-6K) are particularly useful for the daily driving I use the car for, but they are where the power is. Inconvenient. (I know: then why did I buy a turbo car to begin with?)... I know, I know. Sorry, but I hope someone has some idea in regards to this anyway :) I know an engine built for a turbo can't be unturbo'ed. If it could, I would consider that option as well. Just removing turbo from the equation altogether. Slow? Sure. But the car would last... for... EVER...!

  • Answer:

    The stock TD04 turbo is not too large. It's actually tiny. A turbo that spooled below 3000rpm would be impractical. You would hit the gas and end up in the car in front of you, and your clutch would be toast in no time. And what about merging or passing on the highway? The car would fall flat on it's face and you would be a sitting duck.

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A turbo rebuild and port and polish is a great way to give your near stock WRX a new lease on life. Six Star Speed is a specialist Subaru turbocharger rebuilder and services the gamut of OEM Subaru turbos including the TD04 and IHI VF series. Give them a look at http://6starspeed.com

Jonathan

what...? the TD04 turbo that comes stock on a WRX is probably the smallest that you can get for the car, if you want reliability and improved MPGs, just drive responsibly and shift before your turbo starts generating boost (around 3K rpm) and give your car it's regular tune up every now and then, it's not that hard...

hobosapien081

If you want non-turbo, you should have bought an Impreza RS. The problem isn't the size of the turbo, it's some of the supporting equipment. The turbo itself isn't that big. The 3 catalytic converters are huge restrictions in the exhaust system. So is the unequal length manifold, the downpipe, and the intake. You can get the turbo to spool up almost 1000rpm sooner by upgrading those parts. Also, by removing the turbo from a turbo engine, you will probably kill the engine quicker by making it work harder than it otherwise would by removing the turbo. The other thing to consider by going to a smaller turbo, is the fact that your day to day gas mileage would go from the 20+ you're currently getting, to anywhere from 10-15 because you're in boost more often. This is why cars like the WRX STi with 300 hp get 20mpg city stock, but with a bigger turbo they tend to get closer to 25mpg city. Besides, if you do most of your driving at lower engine speeds like most people, you don't need the turbo's HP.

AnonymousGearhead

read this, it has every possible turbo you can put on a subaru http://forums.nasioc.com/forums/showthread.php?t=1141476

nick

Grab a turbo snail sticker when you're done swapping it out from http://www.therallymonster.com ;)

fark

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