Stock Boost Pressure - GTI

[richycreations]

The boost for the turbo is listed just below the supercharger details. The KKK turbocharger boost pressure is 36.3psi (2.5bar)

That may be what the turbo's max pressure is capable of, but there is no way it's running that. I remember there was a polo gti on YouTube with a boost gauge. Might have to find it and see if the readings are visable.

[nomadx38]

Actually it is quite possible for it to be running that. That is the advantage of direct injection. Because the fuel is directly injected it has the effect of cooling the cylinder and thus preventing pre-ignition (or pinging) which means you can have much higher boost pressures.

I have driven my car (77tsi) with VCDS in and I have seen it get up to 22psi before so if my turbo runs at these pressures then I would assume the GTI is running 36psi.

Especially considering it has 136kw which is very high for a 1.4L motor and to get that kind of "power" (not torque, remember power = torque x RPM) without using the supercharger (which is for low end torque only) then I would say it is running at these high pressures.

[kam]

The 77TSI runs boost at 1.5Bar (22PSI). There is a page on Wikipedia that shows all these specs on the various vw engines.

List of Volkswagen Group petrol engines - Wikipedia, the free encyclopedia

Shows everything about the engines such as materials used, VVT support etc...

thanks for confirming

ive actually read that before, but it just sounded way too high !

im used to jdm cars where 18 psi is considered crazy, so when i read a little polo was pushing 22 psi ? naaaaaaaaaaaaaahhhhhhh

going a bit OT here, but anyone had luck with a boost gauge in the polo ? done some research, and not a fan of the gauge in the vent, nor the wierd gauge pod thing that goes on the steering wheel

[nomadx38]

The best option would be to get Polar FIS? (I think that's what it is called...or am I compleatly off) which is an update/control box that displays all the computer data to the MFD display. The same way I can see my boost pressures with my laptop through VCDS is the same way this program connected to the MFD displays information. Just a lot easier.

[richycreations]

In this vid you can clearly see the gauge goes to 2.0bar

6R POLO GTI, a country road - YouTube

Even though he drives slow in this he does kind of put his foot down but it didn't go past 1.2bar and am unsure of what gear and how much throttle

6R POLO GTI,Highway Driving1 - YouTube

[JonP01]

same question, but for the polo 77 tsi ?

77tsi runs a stock boost of 6 psi. Refer to the graph in the link below:

2011 TSI Special from DNA Tuning Australia

[Difinity]

Doesn't seem too much for a modern engine to me. I used to have a 1986 Saab 9000 Turbo with a big exhaust/air box combo that made 24psi @ 6000rpm. That car made 225kw...

[pologti18t]

Do the europeans have a funny way of measuring boost where they include atmospheric pressure (14.7psi) in the boost figure?

So you should subtract 1 BAR or 14.7psi from the figures given.

[alexz]

need to compare apples with apples. it might push 2.5bar but how much does it FLOW at that pressure.

CFM is what you are after! This is what the turbo will actually flow compared to what pressure it is doing it at.

[h100vw]

need to compare apples with apples. it might push 2.5bar but how much does it FLOW at that pressure.

CFM is what you are after! This is what the turbo will actually flow compared to what pressure it is doing it at.

At last a sensible comment. Volume of air, not the pressure, is the important factor.

The ECU does include ambient pressure in it's output so that needs to be subtracted.

avin