Advice to increase turbo

[Lazzaro99 1]

Hello guy 

I wanted to ask for your opinion

I have a Seat Arosa 1.4 TDI i currently have a turbo gt1749vb  I thought about mounting a bigger turbo gt2052v of Audi A4 2.5 tdi 

what do you thing?? 

It is too big??

 

[Pete 308]

First question is always gonna be this. 

Why?

[Lazzaro99 1]

Simple!

to have more power?

[Rich 1,023]

the only reason why.

[Sausage 138]

1749vb is a good match with right injectors and FMIC and obviously a map, if you have those and run out of power with it you must be up near 200hp? You need to be on 4 pot flywheel for clutches as well.

You can go bigger but will be more laggy.

[mk2 208]

you need to do more than just increase air throughput...

if you throw more fuel in, with everything else stock to generate lots of black smoke, you'll get a fair bit more power, without even getting your hands dirty

[Lazzaro99 1]

For now they are on 150 hp 

In the map i gave 80% of fuel I would like to give more 20%

the injector is stock, the clutch has a few kilometers and for now it's fine

But the problem is the pression of turbo that often changes alone from one day to the next...

I think it's the fault of geometry

What do you mean for FMIC?? @Sausage

Your advice is always welcome!!

[Sausage 138]

Post what you have done to the engine and map (or send me the map via pm).

FMIC = front mount intercooler

Edited May 24, 2018 by Sausage

[Rich 1,023]

the lupo tdi has an fmic as standard.

[Sausage 138]

yes but it is hidden behind the bumper and not up to big power.

[Lazzaro99 1]

If you see on the front is FMIC of grande punto 1.3 mjet 90cv

[Sausage 138]

Nice, how many litres is the IC core?

[mk2 208]

ooh, someone's gonna do some calcs... don't forget you can move the pressure sensor, blowoff and dump control to right next to the inlet valves. reduce down swept volumes, speed up flow, increase pressure. Mmmmm. Poweeerrrr.....

[Lazzaro99 1]

Explain yourself better, it’s interesting... @mk2

i don’t know how many liters is my IC @Sausage

here we see better

[mk2 208]

go read some books... way too much to write here! 

good first book would be this. old, but still fresh. it cuts out a lot of the physics and maths, with just the juicy bits. "david vizard how to build horsepower". it was required reading at my college.

[Lazzaro99 1]

where should I put the pressure sensor?? 

I don’t have the blowoff

What do you mean for the control of exhaust??

[Sausage 138]

Measure the silver core L x W x D and get the volume, ideally you need around 7 litres for 200+hp.

Dont put a dump valve on a tdi.

Edited May 25, 2018 by Sausage