New Turbo

[Kai]

I hope you have a spare 6-8k if you arnt mechanically minded.

[h100vw]

That's where your project could fall down. Although Custom-Code do software for the GT series big turbos, I couldn't do a phase 3 down here.

It's not the kind of thing you could buy off the shelf in my opinion. Just too many variables in the mix and too easy to cause an unwanted mechanical failure.

Gavin

[JIMTRON]

That's where your project could fall down. Although Custom-Code do software for the GT series big turbos, I couldn't do a phase 3 down here.

It's not the kind of thing you could buy off the shelf in my opinion. Just too many variables in the mix and too easy to cause an unwanted mechanical failure.

Gavin

Thanks mate. Just downloaded v-tune and had a look, must have been dreamin', obviously cant do any altering maps.
So if I do go GT3071r, can anyone in melb do the software? or am i still gonna struggle with that?

[h100vw]

Thanks mate. Just downloaded v-tune and had a look, must have been dreamin', obviously cant do any altering maps.
So if I do go GT3071r, can anyone in melb do the software? or am i still gonna struggle with that?

Sorry mate, I don't have any names for you in Australia, let alone Melbourne. That's not that there aren't any.

Gavin

[Bubu]

Your probably best off going with an aftermarket computer. There are plenty of people that can tune a Motec or Haltec or whatever you think is best for your application. It will give you more flexibility in the long run.

If you want to use that particular turbo then I encourage you to talk to some people in the business and see if its a viable upgrade. It is not the easiest option to take but if thats the way you want to do it then go for it.

Some people just choose to go the easier option and buy off the shelf. In the end it may prove to be the most cost effective way to do it but you are after something extra. If thats the road you want to take then go for it dont be put off by other people. Just do your research and talk to the professionals before you open your wallet.

[Spec83]

If putting in a Motec / Haltec / Microtec would it be easier if you convereted to a cable throttle as I know electronic throttle sometimes do not work too well with aftermarket ECU's?

[99gti]

I recently explored big turbos etc and this was the conclusion I came to.

GT3071r is way to big unless you are wanting specificly to build a dyno queen or a purpose built drag car. The power would be un-usable for a road car or even a track car. It would take too long to spool up and unless you stripped the motor to do the internals, you could never take full advantage of what that turbo has to offer.

GT2871r is about as big as you would want to go and still to take full advantage of it you would need to do the internals. The internals are only good to about 300hp. Traction on boost is still going to be a major issue so a LSD is going to be required. There are a couple of 1.8T's running this turbo in Aus, so it can be tuned. One was done using a Haltech and the other is a GIAC tune. You still have the problem of getting the power down coming out of corners because the torque spike just sends you into a flurry of wheels spin. Having 4 wheels to get the power down with may help, but that's not going to help you in a polo.

There is also the GT28rs or disco potato. This is what I was originaly looking to do, and it more suited to the application you are trying to use it for. This would get you a true 300hp car but again you would be on the edge of doing the internals. Probably the most drivable out of all the options and you would be making efficient use of the turbo.

The K04-023 from the S3 is the path I ended up going down. I can use all OEM parts such as S3 injecters, S3 manifold and 4 bar FPR. This yields significant gains over the K04-001, but it should still be a very comfortable and easy daily driver. I am aiming for 220 atw, but from the research I have done it should be capable of more. Anything on top of 220 will just be a bonus.

The K04-001 is the easiest. Direct bolt on and you only need 4 bar FPR.

[FL00DY]

I don't get it. I'm all for more power, but perhaps picking a better base to start from. Personally I don't see the point in chasing such massive numbers from a hatch, it was built for corners. But each to their own

[Guy_H]

The K04-023 from the S3 is the path I ended up going down. I can use all OEM parts such as S3 injecters, S3 manifold and 4 bar FPR. This yields significant gains over the K04-001, but it should still be a very comfortable and easy daily driver. I am aiming for 220 atw, but from the research I have done it should be capable of more. Anything on top of 220 will just be a bonus.

The K04-001 is the easiest. Direct bolt on and you only need 4 bar FPR.

Hey Neil, I think you mean anything more than 150kw @ wheels - honestly - its still a K04 (not trying to spoil the party but it is really wayyyyyy to small to get near 200kw on a street tune)

[99gti]

Hey Neil, I think you mean anything more than 150kw @ wheels - honestly - its still a K04 (not trying to spoil the party but it is really wayyyyyy to small to get near 200kw on a street tune)

Ah sorry, HP not KW... The majority that I have seen to dat have done 220HP but quite a few have done more. The ones with the most linear curves have been there abouts. 220HP I think works out to be about 160kw...