Boost stops at 1.4bar - N75?

[willg54]

Gauge pressure is starting at atmosphere as 0 - so atmosphere is 0, 1 bar boost would read 1 bar guage
Absolute is pressure + atmosphere - so atmosphere is 1bar, 1 bar boost would read 2 bar absolute

[UrS4boy]

I use dashboard boost meter, and that includes atmospheric pressure of 1 bar, so whatever you see on the dash minus 1 bar is your absolute pressure.

No, its the relative pressure. Absolute of 2.2 Bar (which even a stock AAN will do on over boost - with no leaks). 2.2 Bar = 31.9 psig absolute. Minus atmospheric of about 14.7 psig (1.013 Bar), yields 17.2 psig relative = 1.18 Bar relative.

[UrS4boy]

I didn't do boost test, because I thought car should judder and have sort of loss of power. .

Just do the boost leak test and stop wasting our time.

Please.

[Rikki Kitto]

No

Thanks

[newsh]

Try re-torqueing the knock sensors.

[hunker7]

Try re-torqueing the knock sensors.

What do you mean by that?

[newsh]

The knock sensors are bolted to the side of the block below the IM. Loosen the bolts and re-tighten to the correct torque of 20Nm.

[hunker7]

The knock sensors are bolted to the side of the block below the IM. Loosen the bolts and re-tighten to the correct torque of 20Nm.

I will try that, I did notice today that there is a bit more shaking when idling.

Can I use inflated tyre for the boost leak test, as I don't have tyre pump?

[newsh]

You need an air line bud, a pump will not do it.

[hunker7]

I don't really have access to air line, isn't there anything I can use at home?

[UrS4boy]

I don't really have access to air line, isn't there anything I can use at home?

Something like this will work:

[hunker7]

Something like this will work:

...is that 12v tyre pump?

[geneandbolly]

i would put up a post and ask the forum to recommend a decent mechanic in your area who knows about these engines..

[Rikki Kitto]

Have the engine out, wash it and put it back in

[hunker7]

i would put up a post and ask the forum to recommend a decent mechanic in your area who knows about these engines..

Good shout. I will try re torquing the knock sensors, if not then i have to see someone.

Have the engine out, wash it and put it back in

Sure...not.