ok so now that i asked around i was pointed in the right direction as far as parts to get so far got an 06 sti tmic, invidia dp, greddy cb ex. still have to get a vf 39 and walbro fuel pump and of course the cobb acessport will i also need sti injectors.

no to injectors

no to injectors

thanks for your input

If you have an '06 WRX, no. If you are an '02-'05 WRX you will need STi pinks (not from a US STi) for your car. The new WRX injectors flow the same as pinks irc.

you won't *need* injectors, have ever if you have the streettuner software you will be able to run a more aggressive tune if you upgrade your injectors as they will be cycling at 95% with that setup...fuel will be what's holding you back with those mods listed
once you get more fuel then you can go 1 range colder on the plugs... add those 2 pieces to the equation and you should see 10-20hp with a good tune, compared to the current parts list with a proper tune

ok so now that i asked around i was pointed in the right direction as far as parts to get so far got an 06 sti tmic, invidia dp, greddy cb ex. still have to get a vf 39 and walbro fuel pump and of course the cobb acessport will i also need sti injectors.

vf39 = waste of money, get an 18g or something like that.

i had the vf 30 on my wrx and didnt like it. wish i woulda went bigger. 270hp isnt that great.

as a matter of fact i dont even like the vf39 on my sti.... hence why i plan to go t3/t4

vf39 = waste of money, get an 18g or something like that.

i had the vf 30 on my wrx and didnt like it. wish i woulda went bigger. 270hp isnt that great.

as a matter of fact i dont even like the vf39 on my sti.... hence why i plan to go t3/t4

so the vf39 wont perform that well is what your saying and yes i have an 06 wrx.

I think he's saying that from where you are now a VF39 looks awesome, but after you have it for a while you'll realize you limited yourself and if you wanted more power you'd need to upgrade your turbo...again.

one of my buddies just went vf39, sti tmic, and a tune...and is now upset for not listening to everyone (including me) to NOT go with a vf39...sure you can get em cheap on the boards...but u might as well save some $$$ and go with a 18g or 20g (New) and know you'll be happy. just my $.02

one of my buddies just went vf39, sti tmic, and a tune...and is now upset for not listening to everyone (including me) to NOT go with a vf39...sure you can get em cheap on the boards...but u might as well save some $$$ and go with a 18g or 20g (New) and know you'll be happy. just my $.02

so iff i get the 20g will i still nedd the acessport or just a pro tune and what other sopporting mods oh by the way how much do 20g's run.

so iff i get the 20g will i still nedd the acessport or just a pro tune and what other sopporting mods oh by the way how much do 20g's run.

You can get a 20G for about $1k brand new from a vendor on here. The Protune is something you get on top of purchasing your AccessPort. If you get the AP from the tuner you can probably get a discount for the AP+Protune.

this is true

For the budget you gave in your last thread, the VF39 was about all you could afford. A 20G will give you about 50whp more than a VF39 and in my opinion is a waste of money when it comes to turbos. If you are going to spend that kind of money on a turbo upgrade, buy something that will give you more than a 50whp jump.

vf39s are found around here dirt cheap!

For the budget you gave in your last thread, the VF39 was about all you could afford. A 20G will give you about 50whp more than a VF39 and in my opinion is a waste of money when it comes to turbos. If you are going to spend that kind of money on a turbo upgrade, buy something that will give you more than a 50whp jump.

that all depends on your supporting mods.... but if you dont mind a ****load of boost creep, and leaving yourself always wanting a little more. then by all means go with a vf39... if your on a budget..go with a 16g

vf39s are found around here dirt cheap!


there is a reason they are cheap...you have to pay to play :disco:

boost creep huh....

Keep reading your intarweb factoids and spouting incorrect info. With a proper tune of the BCS, you can get rid of boost creep.

You might also want to get a bigger splitter to go with the bigger intercooler.

As for me, I plan on going with the VF39 for now and then when I get some more money I'll sell it and get some injectors and a 20G or something similar...

You might also want to get a bigger splitter to go with the bigger intercooler.

As for me, I plan on going with the VF39 for now and then when I get some more money I'll sell it and get some injectors and a 20G or something similar...

think i will stay with the vf39 dont have money growing on trees

For the budget you gave in your last thread, the VF39 was about all you could afford. A 20G will give you about 50whp more than a VF39 and in my opinion is a waste of money when it comes to turbos. If you are going to spend that kind of money on a turbo upgrade, buy something that will give you more than a 50whp jump.

your right

You might also want to get a bigger splitter to go with the bigger intercooler.

As for me, I plan on going with the VF39 for now and then when I get some more money I'll sell it and get some injectors and a 20G or something similar...

20G FTW! :banana:

Wow....quite a bit of interesting "facts" in this thread.

A properly tuned VF39 (assuming proper supporting mods) will easily reach 300 whp/wtq...which is more power than most of us can handle.

Not all VF39 turbos have true boost creep. In fact, what sooooo many people term boost creep is in fact improper tuning...or lately...lack of tuning.

The 20g is very nice turbo but costs quite a bit. Yeah you can get it for around $1000.00 but that doesn't include several parts you need to install it. Also keep in mind, the larger the turbo you have the more issues with heat soak you will endure and you will put more strain on your engine, trans, etc. Don't put some huge ass turbo on with a TMIC and then break your transmission...I don't want to hear you whine. Considering you are on a budget I would STRONGLY consider not going higher than the VF39 (actually a VF22 is the "best" IHI turbo). Sounds to me like you might not be able to pay to play. My .02.:banana:

you cant be anymore wrong, every sti that has a catless turbo back exhaust has boost creep, even a stock td04 has boost creep, my buddie's 05 sti (315whp still with a vf39, has the worst boost creep ever. IHI turbos are known for there boost creep. and sure go with a vf22 if you want torque...but say good bye to top end. Not only do i have a 20g, i also have a gt35r in my garage, so yes i can pay to play.

Sure catless is more prone to boost creep but it doesn't mean 100% chance of boost creep.

TD04 boost creep on stock setup?? Sure....:lol:

Honestly is sounds like you have no idea what boost creep is.

Um....VF22 has better top end than the VF39....

Your advice of purchasing a larger turbo for a person on a budget who is keeping the TMIC is flat out stupid. Can you run the 20g on a TMIC...yes...but it will limit you. And heat soak will be an issue. It is smarter in this case to stick with IHI turbos.

I'm glad you have money to play with. However, the OP doesn't appear to have such luck. Thus, I don't care what you have to play with...I do care about hearing bad advice for someone clearly on a budget.

Sure catless is more prone to boost creep but it doesn't mean 100% chance of boost creep.

TD04 boost creep on stock setup?? Sure....:lol:

Honestly is sounds like you have no idea what boost creep is.

Um....VF22 has better top end than the VF39....

Your advice of purchasing a larger turbo for a person on a budget who is keeping the TMIC is flat out stupid. Can you run the 20g on a TMIC...yes...but it will limit you. And heat soak will be an issue. It is smarter in this case to stick with IHI turbos.

I'm glad you have money to play with. However, the OP doesn't appear to have such luck. Thus, I don't care what you have to play with...I do care about hearing bad advice for someone clearly on a budget.

Word. Nice post conker, I think you pretty much covered that :) Boost creep stock with a TD04 :lol:

At least the members with member numbers under 100,000 agree with me. :rolleyes: :lol:

Wow....quite a bit of interesting "facts" in this thread.

A properly tuned VF39 (assuming proper supporting mods) will easily reach 300 whp/wtq...which is more power than most of us can handle.

Not all VF39 turbos have true boost creep. In fact, what sooooo many people term boost creep is in fact improper tuning...or lately...lack of tuning.

The 20g is very nice turbo but costs quite a bit. Yeah you can get it for around $1000.00 but that doesn't include several parts you need to install it. Also keep in mind, the larger the turbo you have the more issues with heat soak you will endure and you will put more strain on your engine, trans, etc. Don't put some huge ass turbo on with a TMIC and then break your transmission...I don't want to hear you whine. Considering you are on a budget I would STRONGLY consider not going higher than the VF39 (actually a VF22 is the "best" IHI turbo). Sounds to me like you might not be able to pay to play. My .02.:banana:

well my goal is 300 hp so guess i will stick with vf 39 .

I stuck to vf39, and got a Maddad header/uppipe and ditch the accessport em for a custom tune.

I am making 270whp on MD right now on 91 crap gas only topping out at 15psi. (Tune is not done). and also makes boost come on full at 3k rpm instead of the disappointment rpm range in the accessport em. FYI I dyno 265 ish on the same MD using accessport em boosting at ~17psi (which is right at what they said in the notes)

just have patience and never overstretch your budget, I rather have my car running strong everyday that makes most of what it got rather than breaking bank and/or not having the car running right at all.

I stuck to vf39, and got a Maddad header/uppipe and ditch the accessport em for a custom tune.

I am making 270whp on MD right now on 91 crap gas only topping out at 15psi. (Tune is not done). and also makes boost come on full at 3k rpm instead of the disappointment rpm range in the accessport em. FYI I dyno 265 ish on the same MD using accessport em boosting at ~17psi (which is right at what they said in the notes)

just have patience and never overstretch your budget, I rather have my car running strong everyday that makes most of what it got rather than breaking bank and/or not having the car running right at all.

Dood...the header/uppipe is not needed and you will need the Accessport (or some type of EM) for a custom tune which I agree with.

You're making 270whp without a tune?? So you're running a new turbo without a tune?? The AP has a bad power curve?? I'm not sure I understand what you're saying.

YES...don't go beyond your budget. That is where you run into trouble. Playing without being able to pay.

I have an 04 STi. I had my stock VF39 worked by Deadbolt and with supporting mods ran 280 whp. Still boost creep issues with the VF39. I recently switched to a Deadbolt TD06 18G SuperZilla. I had high hopes, and I am continuing to tune it, but FWIW, I am seeing only about a 35 whp increase from the VF39, and I still have boost creep just as bad as with the VF39. Plus it takes about 1000 rpm more to spool it.

The VF39 is not a bad turbo. It does have issues with cracking the housing, but I think if you get a used one that does not have a crack, it will likely be fine. Most of the cracks don't hurt performance anyway. Some folks are getting some pretty high psi out of the VF39s now, and it does seem to have a pretty forgiving efficiency zone. Plus it spools VERY quickly. It does taper off at higher rpms, but most folks tune that into their boost maps anyway.

If you have a cheap source for a used VF39, and it is not cracked, I say go for it. If you are not satified, or if you feel the need to say you have a bigger snail than the next guy, when you upgrade later you will not be out a lot of money.

I have an 04 STi. I had my stock VF39 worked by Deadbolt and with supporting mods ran 280 whp. Still boost creep issues with the VF39. I recently switched to a Deadbolt TD06 18G SuperZilla. I had high hopes, and I am continuing to tune it, but FWIW, I am seeing only about a 35 whp increase from the VF39, and I still have boost creep just as bad as with the VF39. Plus it takes about 1000 rpm more to spool it.

The VF39 is not a bad turbo. It does have issues with cracking the housing, but I think if you get a used one that does not have a crack, it will likely be fine. Most of the cracks don't hurt performance anyway. Some folks are getting some pretty high psi out of the VF39s now, and it does seem to have a pretty forgiving efficiency zone. Plus it spools VERY quickly. It does taper off at higher rpms, but most folks tune that into their boost maps anyway.

If you have a cheap source for a used VF39, and it is not cracked, I say go for it. If you are not satified, or if you feel the need to say you have a bigger snail than the next guy, when you upgrade later you will not be out a lot of money.

thanks for all you guys input its a big help but from what i asked about the vf39 is rhe way to go and thats coming from people who know alot more than i do .

Dood...the header/uppipe is not needed and you will need the Accessport (or some type of EM) for a custom tune which I agree with.

You're making 270whp without a tune?? So you're running a new turbo without a tune?? The AP has a bad power curve?? I'm not sure I understand what you're saying.

YES...don't go beyond your budget. That is where you run into trouble. Playing without being able to pay.

EcuFlash Custom tune. The OTS Vf39 map is not the greatest there are plenty of improvement on it.

you cant be anymore wrong, every sti that has a catless turbo back exhaust has boost creep,

EVERY STI? I certainly did not have any boost creep issues with a TXS TBE (huge bellmouth), with or without the cat.

EVERY STI? I certainly did not have any boost creep issues with a TXS TBE (huge bellmouth), with or without the cat.


I didn't have any boost creep issues either.