Who All Makes Good Twin Scroll Turbo Kits?

Tom W · Posted: Fri Jan 29, 2010 9:13 pm

bigmatt33 wrote:

I am happy with the power of my 20g but hp is addicting.

I want to know more about this guys car. That is what I am looking to eventually get to.

The garage tuning setup is $3,500

Are you saying I would be better off to go with something like the AMS Rotated Mount V-Band Turbo Kit?

Earls car is a 05 STI, stock internal EJ257 2.5L.
He has the Full-Race twin scroll turbo kit with a Borg Warner S300SX 91/79 turbo
Grimmspeed PnP intake manifold and TGVs
the crazy color on the manifold and tgvs are done by CM werks
team tech race harnesss
Prodrive seat
gutted interior with in spec of the RTA street class
Stance CO's and a bunch other stuff

Its up to you man, your car and money, If you want Twin scroll get the garage tuning kit, everything else u know what to do
Words of wisdom, before u start spending money run you car at a track day at a road race course then figure out what needs to be done.
You could have all the power in the world but the car is only as good as the driver

bigmatt33 · Posted: Mon Feb 01, 2010 9:25 pm

Of course the driver is just as imiportant or more than any mod. I like to think that I am growing as a driver as my car growing into a time attack machine.

So what do you guys think is better V-banded turbos or twin scroll setups? I don't know much about V-banded turbos as of now but I will be doing a lot of more research.

I'm glad people have been interested in this topic. I think when someone like myself goes to make a major mod like a turbo, evenone should speak thier minds. I want to get the best turbo kit for my needs. This is where I look to know that I am making a good dicicion.

I would like to buy a kit that is going to give me the best times on the track and for the time being be able to drive on the street.

With these kits you can get everything from a GT3071 to a GT35. So after I buy a turbo kit I may want to buy a much faster spooling turbo like th GT3071 to swop out so I can kick some butt on the auto x track. Its just a thought because I know a GT35 has to much lag for auto x.

My main goal is still the same. To compete in Time Attack. I know I may be a ways away right now. But with every mod and every time around the track I am getting that much closer. In a few years I won't need my car to be street legal. I already have a few sponsors who I am talking to but I have to prove myself first.

Dirtyhobo010 · Posted: Mon Feb 01, 2010 9:41 pm

Yea, a GT35 would be worthless @ auto X. I know just going from a vf39 to the green that the lag was pretty evident. Also in corners where I could go WOT and just barely begin to loose traction on the VF39 I could just drift with the green.

iwantone · Posted: Mon Feb 01, 2010 11:24 pm

drifting in an AWD car is a blast i bet....haha

bigmatt33 · Posted: Mon Feb 01, 2010 11:39 pm

Wouldn't it be great to be able to do a relitively quick turbo change depending on what kind of racing you would be doing that weekend.

iwantone · Posted: Mon Feb 01, 2010 11:43 pm

changing a turbo is relatively quick..haha thats funny

Tom W · Posted: Tue Feb 02, 2010 12:08 am

Even with V-band it still take at least 1hr to 1.5hrs to swap a turbo, the fun part is the oil and coolant lines and removing everything to get to the turbo
Stock Loc. turbo alot more time which also reminds me, Matt you could go with a ATP Stock Loc. 3076r. Those turbos are unreal, in some cases depending on the supporting mods they have spooled better then rotated kits
http://www.efilogics.com/dyno/index.php?runid1=424&runid2=452&hp=1&torque=1&boost=1&gb=0

You should have everything you already need done to your car and that would also save you about $2-3k for other TA expenses (tires, brakes, etc)

Dirtyhobo010 · Posted: Tue Feb 02, 2010 6:33 am

You still have to switch maps, and pay for two pro tunes if your going to have two different turbo setups to use.

bigmatt33 · Posted: Tue Feb 02, 2010 10:43 am

I think an hour and a half is relitively fast. I'm guessing it would be a lot quicker on a rotated kit. And of course I know about the different maps I would need.

So how do you think the powerbands of a twin scroll and a V-Band Turbo would compare?

awd>fwd · Posted: Tue Feb 02, 2010 10:50 am

I plan on going with an ATP 3076, ball bearing, stock location to go with my APS goodies. What more could you ask for? The spool should be about the same as my old journal bearing TD06 20g. I feel as if the VF43 is too small, it runs out of breath on the top end and the car pulls into boost so easily (not very good for MPG's) although I think my setup with a little bit more suspension work would be great for auto-x.

Tom W · Posted: Tue Feb 02, 2010 10:53 am

Ok here's the thing Matt asking that question is a question nobody can answer, the best thing i can say you do is call up P&L, Full-race, AMS or garage tuning and tell them what your planning to do and then let them help you. That's what sales guys/ gals are for

iwantone · Posted: Tue Feb 02, 2010 5:26 pm

awd>fwd wrote:

I plan on going with an ATP 3076, ball bearing, stock location to go with my APS goodies. What more could you ask for? The spool should be about the same as my old journal bearing TD06 20g. I feel as if the VF43 is too small, it runs out of breath on the top end and the car pulls into boost so easily (not very good for MPG's) although I think my setup with a little bit more suspension work would be great for auto-x.

Thats my turbo now! haha

bigmatt33 · Posted: Thu Feb 11, 2010 8:59 pm

Well it looks to me that twin scroll are the way to go if got the exra $ and the better spool is worth the $.

If I don't get a twin scoll gt35 then I will probably get a rotated gt3076.

I should have my car back in a day or two. I can't wait to see the knew dyno #'s. I bet I will have one of the best power bands of anybody sporting a 20g.

iwantone · Posted: Thu Feb 11, 2010 9:02 pm

i know i'm sporting a 20g but have no motor work done. i want more power. i bet a dyno tune would do wonders but i dont want to fork out the $600 for nate at tpg to do it

bigmatt33 · Posted: Wed Feb 17, 2010 5:00 pm

how are you running a 20g without a tune? or was it tuned without a dyno?

How much power are you getting with your 20g setup? a 20g with the right supporting mods and meth injection should get you close to 400whp. I was getting 410 whp and my heads were not even assembled right. For a stock location turbo I think a 20g is a great choice for street. If you go with anything much bigger the stock motor might not hold together. Exspecialy without a good tune.