Ok we have completed our test program on the turbo dyno and are happy to offer our TD05HR 18G turbo very soon. This turbo offers approx 25% more flow than the stock EVO8 turbo and is a bolt on.
Watch this space!

Hows the response compared to say an 05-20g?

plus will you ever release a 18G for the EVO 1-3/VR4 turbos?

The 20G wheel works VERY well in the VR4/EVO1-3 turbo when used with our upgraded turbine housing but not so good in the later EVO turbo. This is because the A/R ratio of the compressor housings are different.

Using our 20G upgrade we have a VR4 customer getting 205wKW@17psi with stock cams.

In our testing the 20G wheel does not work in the EVO8 turbo. It causes a compressor/turbine flow imbalance which means the turbo just does not work properly.

The response is better than a 20G wheel.

Does this 18g use the 9.8 or 10.5 hotside?

I was told 10.5

It uses a 10.5cm2 turbine housing.

can u get these for an evo 7

When will they be available Mark?? How is the on car testing going, any dyno figures yet?

Yes they fit EVO7 and come with a 1.2 bar wastegate actuator (note: you can use your stock actuator if you want).

Hope to have a dyno sheet in the next week.

what something like this going to cost roughly?

The price will be $1690.00.

i am very interested in purchasing one, cant wait to see the dyno sheets!

I'm also very interested.

group buy time fellas

How much boost will this turbo hold reliably?

Depends what you mean by reliably :D

lol, by reliable i mean all day long without breaking

Well depends who's driving
Certainly 1.6 bar should be no problem. Remember boost is not air flow. This turbo moves approx 25% more air as the stock turbo at the same boost.

Hmmm interesting... very appealing for the price and also that it will bolt up to stock maniford/exhaust. Looking forward to your dyno testing + compressor maps :D

Mark (GT Pumps) is the turbo on a car yet? If so, does it live up to your expectations? Does the 25% extra air flow equate to a substantial power increase and does it raise the spool up rpm required?

I'm no expert, what's the comparison to a stock EVO9 turbo.

Mark what is the wheel composition on these kits to be - inconel, Ti...? Any options?

They have Inconel 718 turbine wheels and aluminium compressor wheels.

Bump for an answer.

would there be a beg difference between a big 16G, 18G and 20G? and is it common sence to go with a 1.2 actuator and 10.5 hotside...

are there any cons agains these set ups compared to the stock turbo?

any dyno sheets or comparo work would be much appreicated.

pat

But isnt pressure and flow related, pressure increases as a square related to flow. meaning if only turbo is changed and everything stays the same (manifolds, air intake- same pressure drop), for flow to increase so does the pressure.
for example
1m3 @ say 4psi
to double the flow to 2m3 you would require 16psi

Ok I can see what your getting at.
It's all to do with the mass air flow. If things are working more efficiently you will have lower temps and increased mass air flow for the same boost.
Remember also inlet manifold boost is only half the story it depends on the exhaust backpressure as well.

Will this go onto a EVO 6??

Yes.

Thanks for explaining that.

Pat,
the flow capacity of the wheels are quite different. The 20G wheel required a "clipped" turbine wheel to work which can hurt spool. So you have the stock big16G wheel and the 18G is halfway in between.

The 10.5 turbine housing allows extra flow which is marginal anyway.
With a bigger turbine housing and compressor wheel you will loose some spool compared to the stock turbo but that's a fact of life with turbo's.

The 1.2 bar actuator allows for more positive boost control because it has a stronger spring.

I will post some dyno info as soon as it becomes available.

cheers,
Mark.

how are these comming along

there has been a delay in testing..

watch this thread for updates soon!!

What's the update?

Waiting on some EVO9 turbine housings to arrive. Testing so far shows this is the main area for improvement.
We are working with TECHSPORT and VE Rigoli. Sorry I haven't posted anything yet but this stuff takes time.

so if the limit of the stock turbo is 20-21psi - how can u run these turbos at 25psi?

wont that be bad? i thought that raising the boost by a lot could break something in the motor real easy?

Changing the wheels changes the efficiency of the turbine... gtpumps can probably explain better.

Mark are these the turbos that are made in Korea or Taiwan? Have they been on cars long enough to allow for adequate longevity?

... if so ... are we talking days, weeks, months or years???

There are a lot of turbo's out there for more than 1 year now plus I offer a written 6 month 20,000km warranty (who else does that?). My turbo's actually use higher spec material (Inconel 718) than Mitsubishi (Inconel 716) does.
Have a look in my vendor area in Rexnet http://www.rexnet.com.au about the Subaru turbo's I sell. You will see many posts from happy customers. We are just about to release our new GTPS02 Subaru turbo which the guys on Rexnet have been waiting for
We are working on so much new product it's slowing everything down a bit, including the stuff for you guys :oops:

The solution is to have a turbo that moves more air at the same or less boost pressure.
The simple fact is that Mitsubishi (unlike Subaru) with the EVO9 turbo have matched the turbo almost pefectly to the 4G63. So there are no "easy" big gains using the standard components.
However in saying that the place for improvement is the turbine end and we will have a new turbine wheel available very soon which we will be testing.

Hi Mark,

I thought it was the compressor housing that was the big improvement on the IX ??

Isnt the turbine housing on the IX the same 10.5cm2 unit as on the VIII MR ?

Cheers

Justin

Yes the turbine housing is the same. I mean to possibly further improve on the EVO9 turbo as well as the previous ones.

Thnks for that Mark. That sounds interesting