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Lazzaro99

Advice to increase turbo

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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??

 

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First question is always gonna be this. 

Why?

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the only reason why.

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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.

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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 :)

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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!!

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

FMIC = front mount intercooler

Edited by Sausage

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the lupo tdi has an fmic as standard.

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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.....

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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.

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where should I put the pressure sensor?? 

I don’t have the blowoff

What do you mean for the control of exhaust??

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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 by Sausage

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