Header FAQ: Read if you are thinking of buying one! - NASIOC a little info you can find by searching.
X2 on searched info http://www.wrxtuners.com/forums/f95/what-turbo-should-i-get-read-before-asking-20013/ Don't take it as I am being rude just trying to help by searching your question.

 

Hey man thanks for the info i appreciate it

 

No problem thats what we are here for!

 

Cobb's map is for an FP16G,which is a small 16G (510cfm @ 1bar).A Big16G flows 550cfm @ 1bar.The VF39 and VF43 use a compressor that is similar in flow to the small 16G,but the small 16g (or any MHI) is way more efficient than the IHI turbos.

 

ok so the 16g is just a better tubro. i want to get that one anyway only because ...well im poor as hell and they are like 600. nice ..thanks all of you guys ..my mind is made up ... 16g

 

Correct me or elaborate if I'm wrong - but make sure you get a Forced performance. I know when I was looking into them (16g turbos vs. my VF39), I was seeing huge price variations, and some of the ones I was seeing for $600 were just stock mitsubishi turbos for talons. They are a 16g, but I'm sure they don't perform the same. I know all the good FP Big 16g turbos I saw were like $900 from blouch.

 

some of the ones I was seeing for $600 were just stock mitsubishi turbos for talons. They are a 16g, but I'm sure they don't perform the same.

They are not bolt on turbos for Subies.They have the same wheels,just not the same housings/flanges.

 

on turbochargers.com they have a few under the subie section but i cant understand the difference
1 Subaru MHI TD05H 18G 8cm2 Turbo This high-powered upgrade is good for 400 HP to wheels and flows 600 cfm! 875.00

2 Subaru 18G TD05H 7cm2 Turbo This high-powered upgrade is good for 400 HP to wheels and flows 600 cfm! 799.99

whats the diff between the two other than the 7cm and 8cm. its states they same power output.

3 Subaru MHI Turbo Evo or Big 16g 7cm2 Upgrade W/Warranty 380HP
[tc-subaru7bi] $729.00

4 Subaru MHI Turbo Evo or Big 16g 8cm2 Upgrade W/Warranty 380HP
850.00

again 3 and 4 they say the same power out put for the bigger and smaller wheel.

also for these prices is it better to just get the 18g (and is it stock bolt on)

w/ a 16g u do pinks, sti tmic, fuel pump and EM. is it the same for the 18g. cause at these prices ill ###### for the 18g. also can my .....auto(im not proud of it but it was the only one in my price range) handle a 18g.

 

on turbochargers.com they have a few under the subie section but i cant understand the difference
1 Subaru MHI TD05H 18G 8cm2 Turbo This high-powered upgrade is good for 400 HP to wheels and flows 600 cfm! 875.00

2 Subaru 18G TD05H 7cm2 Turbo This high-powered upgrade is good for 400 HP to wheels and flows 600 cfm! 799.99

whats the diff between the two other than the 7cm and 8cm. its states they same power output.

3 Subaru MHI Turbo Evo or Big 16g 7cm2 Upgrade W/Warranty 380HP
[tc-subaru7bi] $729.00

4 Subaru MHI Turbo Evo or Big 16g 8cm2 Upgrade W/Warranty 380HP
850.00

again 3 and 4 they say the same power out put for the bigger and smaller wheel.

also for these prices is it better to just get the 18g (and is it stock bolt on)

w/ a 16g u do pinks, sti tmic, fuel pump and EM. is it the same for the 18g. cause at these prices ill ###### for the 18g. also can my .....auto(im not proud of it but it was the only one in my price range) handle a 18g.

The difference is turbine nozzle area or A/R.The 7cm is more suited for 2.0L and will provide faster spool up.All those turbos are stock bolt ons.I would not run pinks on an 18G or EvoIII 16G.Maybe a Big16G but your topend will be limited by those injectors.

 

The auto is definately not handle much abuse at all. My friend here just put a vf39 on and it blew his tranny rather quickly. But it all depends how you drive the car regardless though with an upgraded turbo you will drive spirited. Don't car who you are you will. I would go at least with 650 injectors on the 18g and I pretty sure you can stay with tmic but I don't think the STI one is big enough migh want to look for a bigger one.

 

I agree with suddenthomas about looking into bigger injectors and IC. They will both be the limiting factor on the amount of power you can get out of upgrading your turbo.