What mods needed to run a 20g turbo on a 2.0
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This is a discussion on What mods needed to run a 20g turbo on a 2.0 within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Hi everyone, I have a 02 bugeye and I'm wanting to upgrade my turbo, I have a new TD05 20G ...

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    Registered User rgcwrx's Avatar
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    What mods needed to run a 20g turbo on a 2.0

    Hi everyone, I have a 02 bugeye and I'm wanting to upgrade my turbo, I have a new TD05 20G turbo laying around that I wanted to use, so I was wondering what supporting mods I would need in order to run that turbo?


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    Registered User Impreza2.0's Avatar
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    larger injectors, pump, intercooler, couplings, up pipe, turboback exhaust, and a tune. That is a large turbo... it will need air. the intercooler you want is pretty big. i'd contact the turbo's manufacturer and ask what size core you should use. You might find out it's a front mount intercooler or nothing... not sure with that snail.
    otherwise ^those are the standard upgrades for most turbo swaps. You can't really go to big without doing those things.
    be sure to find a tuner if you are not sure how to do it yourself.
    again, that's a big turbo, and it could hurt itself or your motor, or you... to drive it without supporting software changes.

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    Registered User rgcwrx's Avatar
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    Well so far I have a up pipe and turbo back exhaust, and I have a Cobb AP. What ETune service would you recommend to get the AP tuned? Can I use 91 octane fuel with this turbo or will I have to go 93?


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    Registered User Impreza2.0's Avatar
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    I'd start by contacting Cobb. Tell them exactly what parts you have, and ask what can be done.
    You can still use 91o... though you may get better results w/93, I'd ask them that, too.

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    Registered User WRX-maniac's Avatar
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    You would be better off with 93 octane. But 91 will work. Thats a pretty large turbo my friend, find a very reputable tuner, call them and ask for their advise on the build and follow it. Honestly, there is absolutely no need to contact COBB. Sure they might give you some friendly advise on what to do as far as your build goes, but it may be different than what your actual tuner recommends. Period. Impreza2.0 was pretty much right on dot on the modifications needed to run this turbo, but when it all comes down to it, the tune will make or break your car. That large of a turbo on a 12 year old car with presumed stock engine and internals. Also, the accessport thing only matters on what your tuner prefers. Some tuners require you to have the accessport to tune, others use the opensource method. Again, ask your tuner.

    But, before you start to anything to your car, you need to be sure it is healthy. 12 years old and who knows how many miles? Completly service your car, do your timing belt if it has not been done, change all fluids, then do a leak down/compression test. Make sure that your engine can handle these upgrades before you proceed.
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    Registered User rgcwrx's Avatar
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    Well the main reason I want to go with that turbo is because I already have it. But yeah I'm doing the timing belt and tune up when I get in to changing the turbo. And as far as mounting the turbo on the car do I need some special mounts since the turbo is quite a lot bigger than the stock turbo?


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    Master Baiter EJ257's Avatar
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    Where do you live? E-tuning should only be done on that setup if you're a long distance from someone reputable
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    Registered User rgcwrx's Avatar
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    I live in delta junction Alaska in the middle of nowhere and the nearest tune shop is a 6 hour drive.


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    OMG WTF MainFrame's Avatar
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    Phatron, WTF Tuning, and Keith @ AWDTuning all offer e-tuning services, and are decent tuners that won't blow your engine up. E-tuning isn't ideal for any car with a turbo swap, but if that's your only option so be it.

    The higher octane fuel you can run the better..


    If the 20g that you have is designed for OEM Subaru fitment, then you should be able to bolt it right up.. basically. You never said which 20g it is though, so it's hard to say.

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    Registered User rgcwrx's Avatar
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    Oh ok thanks for all the info guys! But about the turbo all I know is it's a TD05 20g turbo I'm not sure on the brand.


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    OMG WTF MainFrame's Avatar
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    If it's an eBay special (cheap Chinese knock off), then I wouldn't even bother installing it.. they're junk.

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    Registered User rgcwrx's Avatar
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    What kind of turbo would you recommend that's not too expensive but still decent quality?

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    Registered User rgcwrx's Avatar
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    Oh ok. How good are Godspeed turbo's?


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    Registered User nsibanez's Avatar
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    Quote Originally Posted by rgcwrx View Post
    Oh ok. How good are Godspeed turbo's?


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