Subaru Forester Owners Forum banner

18G Upgrade, Suggestions?

59234 Views 495 Replies 32 Participants Last post by  Rescuer
Hey everyone, so I am planning to upgrade my turbo to a TD05-18G 8cm from Kinugawa. Currently I have a Cobb DP and Invidia Q300 CBE and was hoping for some suggestions or feedback on my plans for my power modifications.

I plan on going with:
PW TMIC
Cobb EBCS
DW65 fuel pump
ID1000 injectors
Cobb SF intake with heatbox (maybe, depends on my ability to grab one from a buddy of mine)
And of course a good pro-tune

Any suggestions, feedback, what would you do differently? Thanks!
61 - 80 of 496 Posts
I would get the journal bearing Gtx2863r over the kinugawa as it has the nicer 9 blade turbine and gtx compressor.


Sent from AutoGuide.com Free App
I would get the journal bearing Gtx2863r over the kinugawa as it has the nicer 9 blade turbine and gtx compressor.


Sent from AutoGuide.com Free App
ok, i'm a bit confused at the selection! :Banane35:

he said "If you want a JB 18g, we can do it for the same JB price listed in that
GB ($800 + $25 shipping) and it comes with the billet compressor wheel and
the 9-blade turbine."

SteamSpeed Garrett Hybrid Turbocharger Group Buy - NASIOC

he said in the email the 9 blade 18g, which in that thread says under the Ball Bearing section $1200, but he said he'd do $800 for me?

that would be the Steam GTX28+18G for WRX STI on his page right?
Steam Turbocharger


also his site lists:
Steam TD05H+2863 for WRX STI
Steam TD05H+2867 for WRX STI
See less See more
Yeah, I'm a bit confused as well after reading the NASIOC thread and then looking at the steamspeed site, but nonetheless, i'm pretty excited to see what you get
Yeah, I'm a bit confused as well after reading the NASIOC thread and then looking at the steamspeed site, but nonetheless, i'm pretty excited to see what you get
i wondering if he's offering me the 18G at the TDO5 price? hopefully nate or Superacerc know!
if so i'm going to email the guy back today and make a purchase!
No he is offering you the turbo i mentioned the gtx2863r which is a 18g with a billet compressor and 9 blade turbine that retails for $825 but will give it to you for the black friday $800 price. The ball bearing turbos are on sale for 1200 which is also a good deal but i feel the gtx2863 is the better deal hands down and will be more then enough on a 91 oct pump gas tune.
No he is offering you the turbo i mentioned the gtx2863r which is a 18g with a billet compressor and 9 blade turbine that retails for $825 but will give it to you for the black friday $800 price. The ball bearing turbos are on sale for 1200 which is also a good deal but i feel the gtx2863 is the better deal hands down and will be more then enough on a 91 oct pump gas tune.
what is the "r" ?
i see it listed as "Steam TD05H+2863 for WRX STI " with no r

what confuses me is the 2863 says "MHI style centers with Garrett GTX style 11-blade compressors" , not 9 blade



hopefully last questions! which style?
*Compressor Cover Style
Stock LGT Style (N/A for BB hybrids)
Stock STI Style



+porting $75
+8cm
See less See more
Don't worry about the r you want to port it and 8cm and done.


Sent from AutoGuide.com Free App
Just as a heads up to you guys, that cobb intake even with the box is very loud. While it is fun to have, it sometimes can be annoying. Like when your trying to have a quiet conversation in the car, makes it more difficult.

Everything else looks good though. Figured I'd throw a heads up.
Just as a heads up to you guys, that cobb intake even with the box is very loud. While it is fun to have, it sometimes can be annoying. Like when your trying to have a quiet conversation in the car, makes it more difficult.

Everything else looks good though. Figured I'd throw a heads up.
what other intake do you suggest? :Banane08:
Don't worry about the r you want to port it and 8cm and done.


Sent from AutoGuide.com Free App
i'm still hella confused at what he is offering me
http://www.steamspeed.com/index.php/steam-turbocharger-group-buy-black-friday-sale.html

Steam GTX28+18G for WRX STI is ball bearing 9 blade $1200

Steam TD05H+2863 for WRX STI is JB 11 blade


you are confusing the crap outta me saying one model then saying a different blade number!


i need to know this without confusion.........

his email said he's offering me JB 9 blade for $800 , but the nasioc link says JB is 11 blade.... http://forums.nasioc.com/forums/showthread.php?t=2575824
See less See more
I can only comment on AEM, it was a bit quieter than the cobb. Nate amd ryan whats your feedback with that one for a few months now?
in post 16 I think he clarified saying the JB is the MHI housing which is 9 blades
in post 16 I think he clarified saying the JB is the MHI housing which is 9 blades
but nate said above to get the GTX2863R 9 blade

but the nasioc post says "Garrett GTX 11-blade compressor flow rates*:
43 lbs/min - GTX2863R"



much confusion. i just want to be 100% clear what to get.

seems the model # and blade #'s are all mixed up
Here, ill unconfuse you.

There are two sets of blades. Compressor blades and turbine blades. Both are on the same turbo. Turbine is exhaust side and compressor is intake side. The gtx has 9 blade turbine and 11 blade compressor.

The 2863 flows like a mix between 18g and 20g but calling it 18g isnt correct because 18g is mitsubishi heavy industries terminology. 2863 is proper Garrett terminology.

Like Nate said. 8 cm(referring to turbine housing/cover size) and ported are your options to add.

Aem isn't too loud but noticable kind of like a jet turbine sound. When not in boost though you cant hear it.
Here, ill unconfuse you.

There are two sets of blades. Compressor blades and turbine blades. Both are on the same turbo. Turbine is exhaust side and compressor is intake side. The gtx has 9 blade turbine and 11 blade compressor.

The 2863 flows like a mix between 18g and 20g but calling it 18g isnt correct because 18g is mitsubishi heavy industries terminology. 2863 is proper Garrett terminology.
thanks. that helped a ton. :Banane35:

i emailed the sales guy back so we'll see what he says. if the GTX2863R is $800+25 i'll get it from him
Dont forget you need legacy gt/08wrx fitment unless you have a process west intercooler or are buying one of the cnt or fast motorsports copies.
Dont forget you need legacy gt/08wrx fitment unless you have a process west intercooler or are buying one of the cnt or fast motorsports copies.
ray emailed me and said "i'll get you an FMS tmic"
This is awesome, this thread turned out really well :) I'm really excited for our builds

I may not be able to get the cobb intake afterall so I might go with the AEM, but how much of a difference would it make if I stayed stock intake?

Would any of you also recommend an aftermarket uppipe or anything like that or is that going to be negligible?

Any other recommendations that might help us with our turbos?
It's confusing but Ryan summed it pretty well for you. It ultimately your choose but if it was me I would get the one I mentioned.


Sent from AutoGuide.com Free App
61 - 80 of 496 Posts
Top