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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor


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Old 02-18-2008, 01:37 PM   #1
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Default VF39 or 20G or CE28N

Ok, I have some extra $ to spend

I've been thinking of either getting :

A) Maddad Header + AEM Cold Air Intake + Meth Kit to Max out my VF39 (and a tune of cuz)

or

B) 20G + Injectors (and tune)

or

C) Gold 18x9.5 CE28N


What do you guys think?
I know C wasn't really a power plan option, but heck I will just let you guys see what should I do

Any comment or advise are welcome Thanks!

(ps, I am at cobb stage 2 now, running on 91octane, daily driver)
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Old 02-18-2008, 01:40 PM   #2
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Default Re: VF39 or 20G or CE28N

Are you lowered, if so get the rims but go with something like an 18x9" or something. 9.5" is really wide and don't forget you need tires.

I don't know what to suggest b/c I don't know what you want. Give us more details...
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Old 02-18-2008, 01:48 PM   #3
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Default Re: VF39 or 20G or CE28N

If you've got a fuel pump already too then I'd say go 20G! From what I've read, our VF39's aren't the hot stuff when it comes to being reliable (cracks). If you had a VF43 then I'd say go ahead and max out the VF. This is what I would do. Although I did buy my $2000 Prodrive GC010G's before any power...Hope this helps...
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Old 02-18-2008, 04:47 PM   #4
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Default Re: VF39 or 20G or CE28N

Quote:
Originally Posted by importfanatic17 View Post
Are you lowered, if so get the rims but go with something like an 18x9" or something. 9.5" is really wide and don't forget you need tires.

I don't know what to suggest b/c I don't know what you want. Give us more details...
I am rolling on Coilover, so ride height is not a problem. I also did pull and cut the fender already. (I am running 18x9 +30 now)

I will have RE01R go with the CEs

I just can't decided spend the money on power or rims, lol
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Old 02-18-2008, 05:11 PM   #5
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Default Re: VF39 or 20G or CE28N

20g FTW!
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Old 02-18-2008, 05:11 PM   #6
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Default Re: VF39 or 20G or CE28N

20G no doubt about it, top end is the best feeling in the world...vf39 ftl.
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Old 02-18-2008, 05:15 PM   #7
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Default Re: VF39 or 20G or CE28N

If you had 93oct I'd say 20g without a doubt, but the fact that you have Cali 91oct means you probably won't see huge gains off of a 20g.

What are all of your mods? BTW, if you get an intake get an APS, not AEM.
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Old 02-18-2008, 05:32 PM   #8
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Default Re: VF39 or 20G or CE28N

Quote:
Originally Posted by Muffnbluff View Post
If you had 93oct I'd say 20g without a doubt, but the fact that you have Cali 91oct means you probably won't see huge gains off of a 20g.

What are all of your mods? BTW, if you get an intake get an APS, not AEM.
reason for AEM is because cali sucks ... I wanna stick with AEM so I can have the CARB decal

and yes... I believe 20G could get me around 310-320whp while if I max out the vf39 I can have around 290whp (I hope)

but 20G will give me a much better top end power
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Old 02-19-2008, 04:16 AM   #9
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Default Re: VF39 or 20G or CE28N

Quote:
Originally Posted by C.J. View Post
20G no doubt about it, top end is the best feeling in the world...vf39 ftl.
funny you say that but gain from VF39 vs 20g on is very very small

both the fastest 20g Turboed STi and the VF39 Turboed STi both runs 11.7 and both traps the same.

second and third fastest stock turbo sti are both in 12 flat

and as for 20g turboed STi i think second fastest is 12.3

and only difference is the 20g turboed STi has way more mods, costing more.

so yes both 20g and VF39 FTL... hahaha







Quote:
Originally Posted by dsupermansti View Post
If you've got a fuel pump already too then I'd say go 20G! From what I've read, our VF39's aren't the hot stuff when it comes to being reliable (cracks). If you had a VF43 then I'd say go ahead and max out the VF. This is what I would do. Although I did buy my $2000 Prodrive GC010G's before any power...Hope this helps...


i have a VF39 pushing it to its limit has about 23k miles now has 1 crack and still stronger than ever. as for VF43 im sure that turbo is gonna crack also, just give it time its basicly the same as vf39 just differnt wastegate size hole. hell even on a a bone Stock STi with only 12k never really driven hard it has a crack.




Quote:
Originally Posted by C.J. View Post
20G no doubt about it, top end is the best feeling in the world...vf39 ftl.

hahaha

20g is a waste of cash.

you dont gain much from this turbo. for the cost of doin it

the spool compare to VF39 or VF43 cant be compared to 20g turbo

top end the 20g has a lil avantage.

so if your goin to do big turbo, get something worth the cash FPgreen or bigger















Quote:
Originally Posted by treefolk View Post
Ok, I have some extra $ to spend

I've been thinking of either getting :

A) Maddad Header + AEM Cold Air Intake + Meth Kit to Max out my VF39 (and a tune of cuz)

or

B) 20G + Injectors (and tune)

or

C) Gold 18x9.5 CE28N


What do you guys think?
I know C wasn't really a power plan option, but heck I will just let you guys see what should I do

Any comment or advise are welcome Thanks!

(ps, I am at cobb stage 2 now, running on 91octane, daily driver)

since your from they bayarea, your lucky
ur in good hands hahahaa

top 3 of the fastest stock turbo VF39ners are from the bay
as of right now 1st and 2nd, is tuned by ED @ Eq-Tuning and 3rd is tuned by GST

if you do plan on maxing out your stock turbo, let me know i can prolly help
( MAXED STOCK TURBO IS LIKE INSTANT POWER ON ANY RPM )

20g is really not the way to go.
its basicly a waste of money. for a upgraded turbo.
if your planning to move on from stock turbo. ATLEAST GET SOMETHING FPGREEN size

- Sean


Quote:
Originally Posted by treefolk View Post
reason for AEM is because cali sucks ... I wanna stick with AEM so I can have the CARB decal

and yes... I believe 20G could get me around 310-320whp while if I max out the vf39 I can have around 290whp (I hope)

but 20G will give me a much better top end power

dont worry about carb sticker too much, even if you did have it. its really up to the cops if he wants to give you a ticket or not. i know cuz i have friends with carb sticker everything and still get fat state ref ticket.

290whp hahahaha try higher for maxed out VF39 alot higher hahaha

PS get rid of that AEM intake that **** is worthless

Last edited by 13onesti; 02-19-2008 at 04:48 AM..
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Old 02-19-2008, 04:36 AM   #10
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Default Re: VF39 or 20G or CE28N

Well outside the country of California they have real gas called 93 octane. With some of that the 20g can make 40whp over a vf39 with just injectors and a pump.
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