GTM Performance Engineering: GTX V3 Twin Turbo Kit
 

We are proud to announce a new version of our turbo kit that offers the Garrett GTX turbos using the T25+ Turbine housings. This new turbine housing from Garrett has a number of great new features. For starters, it uses the compact T25 4-bolt turbine inlet flange but with a larger, higher flowing inlet port. The outlet of the new turbine housing is a T31 V-band outlet that keeps the housing compact for a tight engine bay while allowing for more exhaust flow. In essence, this new housing flows as well as a T3 housing in a much more compact package.

Coupled to this great new turbine housing, is the latest aero from Garrett in their forged milled compressor wheel in the GTX line up of turbochargers. The GTX2867 offers higher flow (48lbs/min vs. 36lbs/min) and higher adiabatic efficiency (79% vs. 76%) than the previous generation of GT2860RS turbochargers. Despite their small size, a pair of these turbos is good to up to 960hp at the crankshaft!

As usual, we offer two versions of our complete turbo kits: Tuner and Turn-Key.

Our Tuner Kit is a complete kit without engine management or fuel system upgrades. This gives the end user the freedom to choose whichever engine management and fuel system components they prefer.

Here is the list of components included in our Tuner Kit:

• GTM V3 Cast Ductile Iron Turbo Manifolds with stainless steel heat shields
• Garrett GTX2867R dual ball bearing oil and water cooled turbochargers
• Garrett T25+ Turbine housings with V-band outlet
• TiAl or Turbosmart 38mm external wastegates
• TiAl or Turbosmart 50mm blow off valves
• GTM Twin Front Mount Intercoolers (retains factory crash beam)
• Optional GTM Big Single Front Mount Intercooler (deletes factory crash beam)
• K&N High Flow Air Filters
• GTM Mandrel Bent 6061 Polished Aluminum Intercooler Piping
• GTM 4-Ply High Temp Nomex Silicon Couplers (available in Blue or Black)
• GTM Stainless Steel T-bolt Clamps
• GTM Braided Stainless Steel Oil and Coolant Lines
• GTM Power Steering Cooler Relocation Kit
• GTM 3” Downpipes (optional Forced Induction Specific High Flow Cats available)
• GTM High Capacity Oil Pan with one way baffling system and turbocharger oil return ports

As usual, our Turn-Key Kit comes with everything in the Tuner Kit, but adds the following components:
• GTM Custom Mapped Plug and Play Engine Management using either UpRev or Ecutek
• Bosch EV14 1,100cc/min Fuel Injectors (flow matched and E85 compatible)
• Aeromotive 340lph Fuel Pump

Thanks to the high potential of this kit, we are offering additional supporting modification upgrades as part of the kit should you decide to go for big power.
Upgrades:
• GTM Twin Pump Fuel System w/Fuel Starvation Fix and High Capacity Surge Canister (capable of running up to a pair of Walbro 450 fuel pumps for big E85 power)
• GTM Full Return Fuel System
• GTM 3” Quad Tip Cat-back Exhaust

Here are some pictures of the new components.



For these new kits, the pricing will be as follows:

GTM GTX V3 Tuner Kit: $8,495
GTM GTX V3 Turn-Key Kit: $9,495

If you are currently on our MHI Group Buy, this kit will be offered as an upgrade with special pricing.

Damn....

Will this kit be CARB certified?

If we've already got the "old" garrett kit, is this just a manifold and turbo swap, or do we need new downpipes and intake/intercooler piping?

... No, never will be... A SC is the only thing that has a glimmer of hope, but don't hold your breath, or buy Stillen

Calling you now.

after he explained the details in the kit what makes u think this kit would be certified????

Boost is not in ur future. Just give up.

Good question! I would love to be able to swap turbos n housing when I go built. I'm 99% sure it will be a simple swap. That's what Mike told me if this is the kit he was speaking of

A few questions:

1. How does the responsiveness of these turbos compare to the GT2860RS turbos? How do they compare to the MHI turbos?
2. Are these the same manifolds as in the MHI kit? (In other words, do they negate the requirement to drill and tap the engine block?)
3. What is the upgrade cost for current MHI kit group buy members?

You will need the new manifolds, turbos, downpipes, a couple intercooler pipes and possibly a different coolant crossover line.

Since the turbine housing is capable of a lot more flow, it will be slightly less responsive. As for comparing to the MHI turbos, the GTX2867R has no equal from the MHI lineup.

One of the manifolds is the same as the MHI, and one is specific for the larger T25+ turbine housing. Neither one will require any drilling or tapping.

As for the group buy upgrade price, we're working on it and should have that posted either today or Tuesday.

What kit if any is safe to run on the auto tranny?

I'm just going to put it out there cause I'm a a$$.

BUT THIS IS THE ANSWER TO THE FI TT KIT.

Especially being it's ACTUALLY a complete kit.:stirthepot:

Supercharged is best. Lower torque

There are a lot of turbo kits that are carb approved for Honda cars, the fit, s2000, 90s civic, just to name a few off the top of my head.

With a turbo this small, I cant see why it would be unrealistic to see this carb approved.

T25 turbos suck though, they may spool fast but it can't hold boost all the way through redline and its max output is 16psi before you start blowing out nothing but hot air.

I think its cool GTM is comong out with different kits, but honestly, this one is stupid, literally no room to grow

^ I dunno about that these are the upgraded manifolds over the old ones which made over 850 wheel on the white dragon right?

Did you miss the part where this flows like a T3 and is a higher flowing turbo than the 2860? That's not a small turbo in anything but dimensions.

I disagree as well. These turbos r stout. I'm at 12lbs and boost tapers off to 11.8 lowest. With an upgraded fuel system these turbos could go for way more than the stock block could every handle.

Hey mike whats the biggest turbo you could put on these?

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Do you guys have any dyno graphs, by chance?

Some of you are looking into this to far. If your building a motor then some of these questions are on par. But I doubt you are. You can only do so much on a stock block. But it will run a lot more efficient. And by this kit when your ready for the monster to be released it will be there on a build motor.

Indeed, we made 611whp on the GT2860RS turbos on the stock block with some race gas back in 2009:


Well, for sure, the Garrett GT3582R will fit (each turbo flows ~650hp worth of air and ~1300hp as a pair). But, to push the envelope, we will be testing fitment of the GTX3582R pretty soon (each turbo flows ~750hp worth of air and 1,500hp as a pair). The best part is that the T25+ turbine housing works with the 68mm turbine wheel of the GT(X)3582R turbos.

The bottom line, is that this kit can support some seriously big power should you want to go for it.

Aaaawwww spunk on the phone. Good thing it doesnt have any buttons, gtx35R's are beast for sure.

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We just updated the MHI thread with the upgrade pricing for our Group Buy members to this new kit: http://www.the370z.com/forced-induct...l-release.html

We will be offering an upgrade package at special pricing for our previous customers. Stay tuned for that early next week.

slippery slope of turbo goodness. Get em in with the base kit, then upsell!

If I say I'm going to go with this kit... Will this be the 4th turbo kit thread I've been on???:eek::sly::p:D

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Saw this... and immediately thought of Mike!

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With all they have learned almost getting multiple kits certified, I figured this would be a slam dunk.

Hmm. This is awesome, however my wallet and my wife hates you guys. I hope you have a spare room in the shop because I'll probably need it for even bringing this idea up to my wife lol.

Curious why the GTX2860R is not an option. Same exterior as the 2860, but new GTX interior.

Also, trying to figure out if the GTX2867 will really do anything for a stock block build. So many choices!!!

Edit: adding compressor maps. Looks like at stock block boost levels, the GTX 2867R may not really be an efficiency gain compared to the 2860RS. But certainly has way more room to go compared to the RS:
http://farm3.staticflickr.com/2882/1...7318d2cc_c.jpg

Here is another interesting option: GTX2863R:
http://farm4.staticflickr.com/3832/1...0de6050c_c.jpg

And here is turbine comparison, looks like GTX2863R is more efficient down low than the 2860RS:
http://farm6.staticflickr.com/5547/1...98eecb87_o.png

Well it is GTM if it isn't in one of the twenty two packages just call and see what they can do ;)

Edit: and yeah most of the t25 plus turbos are going to be huge, two 300 hp turbos is as much as the stock block should push, but running bigger turbos may work out better for traction, you know give the tires some time to catch up, and then down the road refresh the motor with new pistons rods and studs and turn up the boost controller.

Also i just looked it up and other than the outer size the T25 plus is huge, if they fit the car you can get a full size GTX3582r better known as the GTX35/40r because it has a friggen 68mm GT40R turbine, the oversize t25 inlet is actually larger than a 2.125 v-band housing, and you can get it in either the .63 or .82 A/R. Lets hope that turbo fits.

I'm also interested in thoughts on the GTX2860 vs GT2860 for stock block applications.

I'm on the MHI group buy but wonder is the GTX upgrade a good idea when I do not plan to build the engine? What is the added value (if any) when you want to stay on the stock motor? Especially when we have already promised the free upgrade from MHI to GT2860rs turbos.

What is the release date of GTX kit? Is it the same as MHI?

Well one day you will have to build and when that day comes you will have the goods to push that baby to way more than your car or skills can handle.

Added value for a stock block would be same power levels at lower boost which equals lower cylinder pressure. That's huge in my book.

Plus boost comes on little later which definitely helps with traction.

I plotted some boost levels against a rough calculation of a VHR for the gt2860 (stage1/2 turbos), gtx2863r and the gtx2867r.

if you plan on never making more than ~575whp (or dont mind running meth/e85), the gt2860 is a great turbo for 15psi or less on our engine. after 15psi you start entering the choke area of the compressor at high rpm (6k+) which will shorten the life of the turbo and blow hot air. (i don't have this graph handy but trust me, its choking)

If you're going for more than 600whp, the gtx2863R is a much better match, at 24psi its in the choke area up top so I wouldn't recommend running a lot of boost with this turbo on 93. still a great turbo for our engine and should produce 650+whp

http://scontent-b-lga.xx.fbcdn.net/h...7d&oe=5265E1D1

in my opinion as far as efficiency is concerned, the 2867r looks like the best match for our engine if you want make power past 600 but still have a quick spooling turbo. these wont start running into the choke area on our engine until 25psi near redline, at that point you'd be producing somewhere near 700-750whp.

https://scontent-b-lga.xx.fbcdn.net/...16&oe=526653B9

Thanks for sharing this. Do you have any info about the gt2871r .86 AR turbos? Just called Mike last week and upgraded to these badboys. Hoping to get 600-650whp with a little methanol on a built block and built auto transmission.

So is this kit available now? Or when will it actually be available for sale?

the gt2871r compressor map is very similar to the gtx version, most significant difference is that it tops out around 28psi, the gtx version is good to about 40psi.

The issue with the GTX2860R is that you will not reach its peak efficiency island until 17psi of boost. It is really more geared towards an engine designed for boost from the outset with low compression. On the VQ37VHR with its 11:1 compression, the GTX2860R is not a good match. Granted, it will still "work", just not as well as the GTX2867. While the GTX2863 is an "OK" candidate for a stock motor, you don't really hit the peak efficiency island on the stock engine until higher boost levels than you can realistically run on pump gas.

The GTX2867R is the best candidate for the stock engine because you can run through a large portion of the high efficiency island for more of the powerband. That means less energy needs to be harvested from the exhaust gas to produce boost. Furthermore, the boost that is produced is at a lower temperature which means less heat needs to be dissipated by the intercooler and smaller cores can be used.

The bottom line is that I would recommend the GTX2867R since it is an excellent match for this engine.

The GTX2867R is definitely a good way to go, even on the stock engine as I pointed out above. If you are just looking to have boost on a budget, however, the GT2860RS is still an excellent choice.

We anticipate having this kit available to ship approximately 30 days after the MHI/Garrett kits start shipping.