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Old 05-02-2008, 05:15 PM   #1
jester696
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Default Looking to upgrade to 20G...

I am currently running a vf39 off of a accessport map and all of the other necessary goodies...Just curious to see what exactly I would need to upgrade to a 20G setup. (I have searched this and found many different opinions from a while ago. Just looking for some updated answers)

~J
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Old 05-02-2008, 05:55 PM   #2
DarkNiteTR
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Default setup

what is your setup now exactly....

I planned on a 20g when i bought my parts, but i decided i might go a lil bigger, im using these parts {i either have or have purchased and waiting delivery}

Walbro 255
DW 750CC
TXS TMIC
Samco I/C hoses
Perrin Turbo Inlet
Short Ram Intake
Invidia U/P

Installed now are...
A/P Stage 2 w/ Invidia DP and HKS Carbon Ti
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Old 05-02-2008, 06:23 PM   #3
ac23
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hmm 20g.. well.. I'd say
FMIC (TMIC would work too but may have heatsoak problem)
750cc or > injectors
Walbro fuel pump
Turbo inlet
TGV deletes
EWG
1 step colder plugs
n all the other basic stuff like turboback exhaust and CAI or Short Ram


I think thats about it, but i'd say the first three things on that list is probably the most important and the rest is really optional.
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Old 05-02-2008, 06:51 PM   #4
Unabomber
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First off, you'll need a tune, hence a tuner. Once you find one, ask him as our advice sucks. Tuner's advice>>>>>ours. You will need at least a fuel pump and some type/size injectors...ask your tuner about those. Other than a tune, injectors, and a pump, you need nothing.

Of course we have no idea what kind of car you have....
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Old 05-02-2008, 09:04 PM   #5
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Quote:
Originally Posted by Unabomber View Post
Other than a tune, injectors, and a pump, you need nothing.
don't waste your money(or time listening to nasioc advise) on inlets, tgv deletes, fuel rails, big MAF, external w/g, etc. They are a waste of money.

get an 8cm, injectors, pump, tune and call it a day.
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Old 05-02-2008, 09:54 PM   #6
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Quote:
Originally Posted by wrxtool View Post
don't waste your money(or time listening to nasioc advise) on inlets, tgv deletes, fuel rails, big MAF, external w/g, etc. They are a waste of money.

get an 8cm, injectors, pump, tune and call it a day.
agreed, + large TMIC
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Old 05-02-2008, 09:55 PM   #7
jflexe99
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Oh, why didn't you get the vf39 tuned? those maps have to SUCK....compared to a tune...im goin vf39 with protune for a long time...then bumping up to a 20g
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Old 05-02-2008, 09:56 PM   #8
jester696
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Quote:
Originally Posted by DarkNiteTR View Post
what is your setup now exactly....

I planned on a 20g when i bought my parts, but i decided i might go a lil bigger, im using these parts {i either have or have purchased and waiting delivery}

Walbro 255
DW 750CC
TXS TMIC
Samco I/C hoses
Perrin Turbo Inlet
Short Ram Intake
Invidia U/P

Installed now are...
A/P Stage 2 w/ Invidia DP and HKS Carbon Ti
Right now I am 07' WRX w/ vf39, cobb tbe, sti tmic, walbro 255, accessport map. I honestly don't plan on doing tgv deletes, or EWG. But, thanks for the help so far
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Old 05-02-2008, 09:58 PM   #9
jester696
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Quote:
Originally Posted by jflexe99 View Post
Oh, why didn't you get the vf39 tuned? those maps have to SUCK....compared to a tune...im goin vf39 with protune for a long time...then bumping up to a 20g
It's funny you should ask...I have been waiting for Cobb to release their new software so that Junior can tune my car through the accessport but figure if I go the 20G route I will just sell some stuff and do an open tune.

~J
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Old 05-03-2008, 01:55 PM   #10
jester696
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What about an intake on a 20G? Short/Cold... Any opinions on that?
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Old 05-03-2008, 02:13 PM   #11
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Quote:
Originally Posted by ac23 View Post
hmm 20g.. well.. I'd say
FMIC (TMIC would work too but may have heatsoak problem)
750cc or > injectors
Walbro fuel pump
Turbo inlet
TGV deletes
EWG
1 step colder plugs
n all the other basic stuff like turboback exhaust and CAI or Short Ram


I think thats about it, but i'd say the first three things on that list is probably the most important and the rest is really optional.
On a 20g you can minimize heatsoak with a turbo blanket and some heat wrap on your headers up pipe and downpipe and a heatshield. A bigger tmic and a 20g and you will be fine. Why would he need tgv deletes or have to go ewg on a 20g?
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Old 05-04-2008, 02:41 AM   #12
subenerd
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Ask your tuner.
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Old 05-04-2008, 06:00 PM   #13
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I'm doing the same setup.
As it's been said several times, pump/injectors. I'd wrap the turbo.exhaust piping. You don't need an FMIC...I'm going BIG TMIC (Spearco). Already have the SPT short ram intake, which is fine, and I also have a header, which should help spool a bit.

What transmission are you running? Honestly, a 5-speed won't like the 20G for very long.
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Old 07-05-2008, 08:26 AM   #14
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The 5-speed will be fine, it depends on the driver.
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Old 07-05-2008, 10:54 AM   #15
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Originally Posted by NeedBoost21 View Post
The 5-speed will be fine, it depends on the driver.
Not always. My 18G powered 2.5L broke third gear on a roll
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Old 07-05-2008, 11:18 AM   #16
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The people that keep telling you to "watch 3rd gear" are the idiots that don't know how to drive or are relating some other idiots experience. Take what these people tell you with a grain of salt. The trans does have it's limits as does any other part of the car, but if you don't drive it like a kid you'll be fine. As far as tgv deletes and ewg set-ups etc, these are not required parts. These parts do however perform a function and your car WILL make more power with the tgv deletes, and it WILL make more power and hold it longer with the ewg. Anybody that disputes this has no experience with these parts and needs not to post about it. As for the tmic you WILL have heat soak compared to a fmic PERIOD. Heat shields, turbo blankets, and coatings all help, but it will have heat soak. It really comes down to your budget. We all read on here in the proven power section and want those great numbers that some guy just made with our turbo, but those cars are not bare bones cars. They have all of the bells and whistles it takes to make those numbers that we all want. If you put together a bare bones car you're gonna get bare bones numbers. PERIOD.

Last edited by 4POTS-OF-FURY; 07-05-2008 at 11:31 AM.
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Old 07-05-2008, 12:00 PM   #17
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Originally Posted by 4POTS-OF-FURY View Post
The people that keep telling you to "watch 3rd gear" are the idiots that don't know how to drive or are relating some other idiots experience. Take what these people tell you with a grain of salt. The trans does have it's limits as does any other part of the car, but if you don't drive it like a kid you'll be fine.
Spoken like a true "internet expert" Kids kill syncros, torque kills gears.

The stock 5spd will break if you put enough power through it, no ifs ands or buts.
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Old 07-05-2008, 12:44 PM   #18
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Quote:
Originally Posted by wrxtool View Post
don't waste your money(or time listening to nasioc advise) on inlets, tgv deletes, fuel rails, big MAF, external w/g, etc. They are a waste of money.


You might not find them cost effective, but there are good gains to be had with most of those. Mainly EWG, TGV, and inlets..

On the trans... Mine grenaded at stage 2, cruising in 3rd gear.
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Old 07-05-2008, 12:52 PM   #19
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Thanks for setting me straight there. I guess you are the real "internet expert", but I'm not the one who broke his trans with just an 18G. And don't even start to tell me about other idiots who have broken theirs with less, because I don't need to hear it again. A trans can break at any time if it has been abused. Learn how to drive your car properly and you won't end up running your mouth and making a fool out of yourself. I know that you are angry about breaking your trans, but it's your fault not the trans. You should listen to those like me who have more than just an 18G and have managed to keep their stock trans intact. If you want some tips on how to keep your next trans in one piece pm me and I'll help you out. That's all there is to say about this, I' done here, good bye.
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Old 07-05-2008, 02:18 PM   #20
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Quote:
Originally Posted by 4POTS-OF-FURY View Post
Thanks for setting me straight there. I guess you are the real "internet expert", but I'm not the one who broke his trans with just an 18G. And don't even start to tell me about other idiots who have broken theirs with less, because I don't need to hear it again. A trans can break at any time if it has been abused. Learn how to drive your car properly and you won't end up running your mouth and making a fool out of yourself. I know that you are angry about breaking your trans, but it's your fault not the trans. You should listen to those like me who have more than just an 18G and have managed to keep their stock trans intact. If you want some tips on how to keep your next trans in one piece pm me and I'll help you out. That's all there is to say about this, I' done here, good bye.
I'm not trying to doubt you here, but enough people have broken theirs within enough different circumstances and contexts, and with enough variables where it can't just be attributed to not driving it 'correctly'. Keep in mind the transmission is nothing more than a slightly improved version of an old unit made for 80hp FWD cars. The components have gotten stronger over the years, and it has seen the addition of a 5th gear, but it is still a flawed design in terms of what most people expect out of it.

I apologize if I seem to have a problem with your approach, but I doubt you have the answer for every driver and every setup in terms of keeping the stock 5MT alive. A lot of it has to do with the driver, a lot is the rest of the car, a lot is just the differing tolerances in each individual transmission. As for me, no, mine wasn't broken, but I built in it preparation/as preventive maintenance as I knew I would be doing a turbo swap. Could the stock have survived with the new turbo? Maybe. Would I rather have a drivetrain that can handle the power, even if I drive as I want to (and no this doesn't mean flatfooting/clutch dumping)? Absolutely. Plus I got some better (IMO) ratios out of it too.

One way is not always the best way.

And let's not start on the age thing...I've seen plenty of 'grown ups' cause quite a bit of damage due to unintelligent, uninformed, or just plain ignorant driving.
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Old 07-05-2008, 02:24 PM   #21
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+1.

5mt + 3.7 final drive = disaster.

THIRD gear is breaking... it's a weak gear with a POS syncro design (cause of my failure according to andrewtech).

Even if you beat the hell out of the car, shockloads on 3rd gear are nothing compared to those on 1st from a launch, or those on 2nd from 1-2 slam.
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Old 07-05-2008, 02:34 PM   #22
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Quote:
Originally Posted by fujiillin View Post
+1.

5mt + 3.7 final drive = disaster.

THIRD gear is breaking... it's a weak gear with a POS syncro design (cause of my failure according to andrewtech).

Even if you beat the hell out of the car, shockloads on 3rd gear are nothing compared to those on 1st from a launch, or those on 2nd from 1-2 slam.
You got it.

I love the 3.7 for many reasons and that is not one of them.
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