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Old 02-06-2012, 11:11 PM   #1
SSP6
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Default 18g vs 16g xt

injen small core fmic, cobb AP, invidia catless TBE, DW 750cc, do i go 16g xt or 18g im on the fence, i want spool quick and some top end pull but still want Daily driver fun. i dont spend alotta time on a highway, so i'm leaning towrd the 16g xt w/ 8cm housing. it slows the spool a bit but allows a lil more top end.
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Old 02-06-2012, 11:22 PM   #2
imprezive503
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16g xt all the way, i have had both on my 2.0l. The 18g was too laggy IMO not enough RPM left to have fun with it.
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Old 02-06-2012, 11:23 PM   #3
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Love my 16G-XT. Spool is wicked fast and holds pretty well up top
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Old 02-06-2012, 11:25 PM   #4
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Quote:
Originally Posted by nattywrx View Post
Love my 16G-XT. Spool is wicked fast and holds pretty well up top
Your info says E85, don't get OP's hopes up by comparing your cars ; ) However your statement still holds on 92 as well.
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Old 02-06-2012, 11:26 PM   #5
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For your setup 16GXT. Quick spool is the 16G every time.

For an 18G you would want larger injectors.
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Old 02-07-2012, 10:22 PM   #6
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the 16 it is then. i wish i had e85 in jersey. and i was up in the air on injector sizing, figured a 750 would be close on both accts but i guess an 850 would suit the 18g better. i as leaning towards the 16xt anyway, just needed a lil shove. thanx!
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Old 07-07-2012, 01:11 PM   #7
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So for you guys running the 16g-XT, if the OP had 1000cc injectors would you recommend the 18g-XT?
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Old 07-07-2012, 01:51 PM   #8
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Quote:
Originally Posted by speedyHAM View Post
For an 18G you would want larger injectors.
Wrong.

The 18g is a great turbo. I made 330awhp on 23psi. The only problem is the turbo ran out of breath. My motor wanted more and the deadbolt 18g with EWG couldn't keep up. If I was to do it all over again I'd go with a blouch 20g xtr. Faster spool and way more top end than my 2.0 could handle.

Lag isn't that bad. Full boost at 3500-3700 is a lot of fun. That's a 4000 rpm power band. At least for me.
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Old 07-07-2012, 03:40 PM   #9
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Originally Posted by Brother EddieJ. View Post
Wrong.

The 18g is a great turbo. I made 330awhp on 23psi. The only problem is the turbo ran out of breath. My motor wanted more and the deadbolt 18g with EWG couldn't keep up. If I was to do it all over again I'd go with a blouch 20g xtr. Faster spool and way more top end than my 2.0 could handle.

Lag isn't that bad. Full boost at 3500-3700 is a lot of fun. That's a 4000 rpm power band. At least for me.
Stock internals? Stock tranny?
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Old 07-07-2012, 04:11 PM   #10
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Quote:
Originally Posted by nattywrx
Love my 16G-XT. Spool is wicked fast and holds pretty well up top
Loving mine too. Been running 23 psi and ewg setup.
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Old 07-07-2012, 04:30 PM   #11
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Quote:
Originally Posted by Brother EddieJ. View Post
Wrong.

The 18g is a great turbo. I made 330awhp on 23psi. The only problem is the turbo ran out of breath. My motor wanted more and the deadbolt 18g with EWG couldn't keep up. If I was to do it all over again I'd go with a blouch 20g xtr. Faster spool and way more top end than my 2.0 could handle.

Lag isn't that bad. Full boost at 3500-3700 is a lot of fun. That's a 4000 rpm power band. At least for me.
I have the same turbo and couldn't agree with you more... Although, deadbolt 18g is plenty for me... A lot of the lag can be avoided with a proper tune.
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Old 07-07-2012, 04:39 PM   #12
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Quote:
Originally Posted by DaveyPetey View Post
Stock internals? Stock tranny?
Stock internals. Been running this setup for 60k miles. Compression is 165 on all four on a warm motor.

06 Sti 6speed and dccd. My 5speed held up just well, I just got a great deal on a 6speed with 2 thousand miles on it.
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Old 07-07-2012, 04:56 PM   #13
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Interesting. How much time are you driving above 6k RPMs? Often?
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Old 07-07-2012, 05:14 PM   #14
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Originally Posted by DaveyPetey View Post
Interesting. How much time are you driving above 6k RPMs? Often?
Nah I baby the crap out of it. Just because you have the power doesn't mean you have to use it. But when I want it, I want it safe and reliable.

But who drives over 6k often. And what is your definition of "often"
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Old 07-08-2012, 06:42 PM   #15
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16gxt and an old 18g are almost exactly the same size. Go with the 16gxt.
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Old 07-08-2012, 06:47 PM   #16
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What I'm gathering from a lot of thread reading is that much of the difference between the 16g-xt and the 18g-xt will come down to the tune. I'm really looking for the earliest spool possible, but maybe I should be shopping for a tuner who tunes for early spool.
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Old 07-08-2012, 07:10 PM   #17
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If you want the earliest spool, stick with a td04.
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Old 07-08-2012, 08:16 PM   #18
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Edit: fastest spool to 275ish WHP.
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Old 07-09-2012, 01:35 PM   #19
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Quote:
Originally Posted by DaveyPetey View Post
Edit: fastest spool to 275ish WHP.
Lol touche. Def go with the 16gxt then. Or call and ask them about their dual ball bearing version of it, that should give you a lil bit better spool. Your going to pay for the best tech, but it's going to be a sweet lil turbo.
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Old 07-09-2012, 02:56 PM   #20
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id love me sum 16g bb terboz
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Old 07-09-2012, 10:31 PM   #21
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id love me sum 16g bb terboz
Wouldnt we all! Ron still owes me a ride in that thing haha

go for the 16g XT and you wont be disappointed but if you have the money call and see if you can get the 16g XTR
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Old 07-09-2012, 10:37 PM   #22
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Well I went with the 18g-XT after reading alot of posts with the process west intercooler, as well as the GS 3port solenoid with 1000cc infectors on my EJ205. Will be in next week. Jason with Cleverley Tuned Performance and Racing is gonna tune it here while I'm in SLC. I'll post some follow up.
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Old 07-10-2012, 10:37 PM   #23
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Keep us informed please! I'm hoping to do the same setup this December. Are you running stock internals/transmission? How many miles are you at? Any other supporting mods?
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Old 07-13-2012, 09:14 PM   #24
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Originally Posted by jmwmnl
Keep us informed please! I'm hoping to do the same setup this December. Are you running stock internals/transmission? How many miles are you at? Any other supporting mods?
Stock transmission, 95k miles, original owner. I'm already running a Perrin cat less up pipe, and Cobb catted TBE. Did a suspension upgrade this week. Turbo and PW TMIC just showed up today. I'll post follow up next week.
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Old 07-13-2012, 11:35 PM   #25
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hope the trans isnt a quick casualty

and why the 16g is likley a better choice
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