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Old 10-05-2019, 11:37 AM   #1
MxRaider
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Default turbo swap question

hey everyone, i am currently running a cobb tune for stock sti [email protected] and sti pink injectors on my 04 2.0 wrx.. i have a greddy non watercooled t518z that id like to put on it.

what i wanted to know is will my sti pinks be good enough for this turbo?

and anyone know if theres a cobb tune for this setup? ive done some searching and havnt found one on my own so resorting you all you wonderfull people!

also if there isnt a cobb tune for the greddy turbo would my current sti turbo/ pinks tune be a good enough to drive it to get a protune?

also i have a jdm 2.0nonavc engine in my car, not sure the exact model but it came with a twin turbo exhaust manifold, only running a single turbo on my original manifold though, im sure that may make some form of difference.
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Last edited by MxRaider; 10-11-2019 at 10:17 PM.
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Old 10-05-2019, 10:17 PM   #2
snow_bound26
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Twin turbo exhaust manifold with a single turbo? There was a LGT in the 90s that had a 2.0 twin setup. Though I think it was technically a sequential set up. That would've been before avcs. Might be from that. Pictures could help.

If Cobb doesn't say xx turbo, injector, intake combination on their website then DON'T DO IT! Pretty easy to follow they way they spell it out on their website.

Do you have a tuner? If not, are there any local to you? If not, have you researched E-Tuning? This is step one. What you have isn't compatible with any Cobb OTS map. Find a tuner. Ask these questions with your tuner. Follow your tuners instructions. Enjoy a happy car. Don't follow those instructions or decide to take a chance and there's a good chance you and your car won't be so happy. It's your money you make the choice. But if you want real answers to those questions, find a tuner.
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Old 10-11-2019, 09:55 AM   #3
subaruandmr2
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Quote:
Originally Posted by MxRaider View Post
hey everyone, i am currently running a cobb tune for stock sti [email protected] and sti pink injectors on my 04 2.0 wrx.. i have a greddy non watercooled t518z that id like to put on it.

what i wanted to know is will my sti pinks be good enough for this turbo?

and anyone know if theres a cobb tune for this setup? ive done some searching and havnt found one on my own so resorting you all you wonderfull people!

also if there isnt a cobb tune for the greddy turbo would my current sti turbo/ pinks tune be a good enough to drive it to get a protune?

also i have a jdm 2.0nonavc engine in my car, not sure the exact model but it came with a twin turbo exhaust manifold, only running a single turbo though, im sure that may make some form of difference.
I don't know how the hell you're using the twin turbo exhaust manifold. My JDM EJ208 came with one of those manifolds too but it has two exits for a turbo. I don't think one of the exits even matches up to the WRX up-pipe? How the hell are you running a twin turbo manifold? Unless you mean a twin scroll exhaust manifold?

There's no Cobb tune for the greddy turbo. Cobb will only have OTS tunes for the turbos they sell. Also, why are you using t518z? It's not going to bolt on, you're going to need a custom up-pipe with an external wastegate and a custom down-pipe. Also, it's pretty dumb to not use a watercooled turbo. If you're running an oil cooled turbo then you'll need a turbo timer to help it cool down where a watercooled turbo doesn't need that. Water-cooled turbos are a blessing, especially when you already have routing for the watercooling. STI Pinks will handle up to a 16g and no more than that unless you increase your fuel pressure. I also hope you've already swapped out your fuel pump for a Walbro 255.

Normally a good tuner will send you a "limp" map after you tell them all your mods so you can drive the car over to their shop. Your current tune with stock injectors will run like dog***** with the larger pink injectors.
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Old 10-11-2019, 10:00 PM   #4
Shik
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I agree with Subaruandmr2, why go with that turbo? There are so many good choices of turbos available with proven results and supporting mods. Not trying to say using different/unique parts is a bad idea, but trying a turbo like that is usually reserved for tuning shops with dynos and fabricators and tuners at their disposal.

Try something a bit more known and save yourself some grief. Good luck.
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Old 10-11-2019, 10:12 PM   #5
MxRaider
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Quote:
Originally Posted by subaruandmr2 View Post
I don't know how the hell you're using the twin turbo exhaust manifold. My JDM EJ208 came with one of those manifolds too but it has two exits for a turbo. I don't think one of the exits even matches up to the WRX up-pipe? How the hell are you running a twin turbo manifold? Unless you mean a twin scroll exhaust manifold?

There's no Cobb tune for the greddy turbo. Cobb will only have OTS tunes for the turbos they sell. Also, why are you using t518z? It's not going to bolt on, you're going to need a custom up-pipe with an external wastegate and a custom down-pipe. Also, it's pretty dumb to not use a watercooled turbo. If you're running an oil cooled turbo then you'll need a turbo timer to help it cool down where a watercooled turbo doesn't need that. Water-cooled turbos are a blessing, especially when you already have routing for the watercooling. STI Pinks will handle up to a 16g and no more than that unless you increase your fuel pressure. I also hope you've already swapped out your fuel pump for a Walbro 255.

Normally a good tuner will send you a "limp" map after you tell them all your mods so you can drive the car over to their shop. Your current tune with stock injectors will run like dog***** with the larger pink injectors.
first off thanks for the replies! 2nd i didnt use the manifold it came with my original manifold is on it. 3rd this greddy turbo infact bolts on in factory location and has its own wastegate. had it installed for a short amount of time while the engine was out but ended up reinstalling the STI turbo due to not having a tuner available atm. and lastly i do have walboro 255 already =)

and ps: got the greddy turbo super cheap from a parts car at a local shop for $200 including manifold, uppipe, divorced downpipe and 3inch catback

end results are that i stayed with my cobb tune setup until i can get a dyno tune, in spring i will be acquiring a built 2.5l with machined 2.0 heads and im saving the greddy turbo for when i get that setup and tune. thanks again peeps!
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Old 10-15-2019, 08:42 AM   #6
subaru_gc8
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Quote:
Originally Posted by MxRaider View Post
first off thanks for the replies! 2nd i didnt use the manifold it came with my original manifold is on it. 3rd this greddy turbo infact bolts on in factory location and has its own wastegate. had it installed for a short amount of time while the engine was out but ended up reinstalling the STI turbo due to not having a tuner available atm. and lastly i do have walboro 255 already =)

and ps: got the greddy turbo super cheap from a parts car at a local shop for $200 including manifold, uppipe, divorced downpipe and 3inch catback

end results are that i stayed with my cobb tune setup until i can get a dyno tune, in spring i will be acquiring a built 2.5l with machined 2.0 heads and im saving the greddy turbo for when i get that setup and tune. thanks again peeps!
If you are going to get a 2.5 your pinks will not be enough for the 18g size turbo.
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Old 10-18-2019, 12:33 PM   #7
Martin4482.rm
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👀 also looking for info ok n this
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Old 10-19-2019, 12:07 PM   #8
Bluestreak03
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Let me help you... Will pinks work? Yes... But... You will max them out quick. Seeing that it is a bigger turbo and flows more cfm... Want to get more potential out of it need to get bigger injectors
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