Very low boost

[matthg40]

Evening guys very quick question my 40 is only putting 0.2 bar of boost out when it usually puts out atleast 1.2 uve checked for leaks and all is good but still very little boost anyone got any ideas plus the charger belt has plenty of tension aswell

[cheys03]

Throttle-bypass butterfly (the recirc one, forget the proper name) stuck open?

[matthg40]

Ah good thinking does needing the charger servicing make any difference

[PeteG40]

any of the pressure lines loose (to ecu etc)

or look in intercooler gauze, if there is any metal your charger has shat itself

[Robin]

Ah good thinking does needing the charger servicing make any difference

not 1 bar of difference.

[matthg40]

Scratching my head abit with this one

[Jezza-7]

have you got a mechanical boost gauge?

[matthg40]

Yes mate

[Jezza-7]

Check your connection on the t-piece. My rubber sleeve that goes over the nylon pipe and connects to the t-piece had perished and split open.

[cheys03]

Check your connection on the t-piece. My rubber sleeve that goes over the nylon pipe and connects to the t-piece had perished and split open.

Stack unit per chance?
Mine did exactly the same

[Jezza-7]

Yeah it was 

Rang up stack and they dont sell them separately either. 2 tie wraps and some silicone did the job.

[matthg40]

Which t piece are u talking about guys

[cheys03]

The t-piece that some people will use to fit a boost gauge, you may or may not have one too depending on your setup

[Jezza-7]

Usually found on the small pipe coming off the top of the fuel pressure regulator going to the main vacuum pipe coming off the throttle body.

[matthg40]

That is all in good condition anymore ideas as I want my boost back :-(