Not holding boost....

Started by trevtubby, August 31, 2008, 12:33:15 AM

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trevtubby

August 31, 2008, 12:33:15 AM
Heya,

Took the car out for a spin today and put her onto high boost for the first time in a while.

Noticed that the car isnt holding boost, its going up to .9 bar as it should, but then as I go up the revs its dropping to .6/.7 bar. Feels slow :confused:

Anybody got any ideas what it could be?
QuoteImpossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.

Contact me on: trevisbest@hotmail.com :)

Jono FD3

#1
August 31, 2008, 10:27:13 AM
She single or twins mate??
Jono

trevtubby

#2
August 31, 2008, 03:06:00 PM
twins mate
QuoteImpossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.

Contact me on: trevisbest@hotmail.com :)

Jono FD3

#3
August 31, 2008, 03:33:08 PM
Check all the small vac lines that go to the actuators for the second turbo.... pre spool & the one by the Y pipe...... if these aren\'t working properly then your boost will drop off as he RPM increases, because the primary turbo runs out of steam at avout 5k which is whan the 2 turbos should be in full flow!

trevtubby

#4
September 01, 2008, 02:36:06 PM
aah thats sounds like it could be the problem then.

i`ll have a dig about and see what I can find, am I looking for pipes that have completely come off, or pipes that have cracked or split?
QuoteImpossible is just a big word thrown around by small men who find it easier to live in the world they’ve been given than to explore the power they have to change it. Impossible is not a fact. It’s an opinion. Impossible is not a declaration. It’s a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.

Contact me on: trevisbest@hotmail.com :)

Jono FD3

#5
September 01, 2008, 11:44:30 PM
eather or mate.... as a split pipe will be enough to stop the system from working!! also could be a blown solonoid under the UIM.....

Mass of possibilities, just a process of elimination!!

Jono
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