heard about this before?

twig · Jan 22, 2009

Just been reading around on the net and found this:

"Power loss on TDI 90s over 3,000rpm can be cured by replacing a thin hose that runs from the exhaust, near the turbo, to the ECU."
http://www.honestjohn.co.uk/carbycar/index.htm?md=358

He's talking about the mk2 ibiza by the way.

Anyone come across this before? The 90bhp TDi is what I've got and i wouldn't mind getting a bit more poke above 3000 revs, especially if all it takes is a new pipe!

Any comments welcome

devonutopia · Jan 22, 2009

is it a vacuum pipe?

twig · Jan 22, 2009

sounds like it. could it be an EGR vacuum hose?

Muttley · Jan 22, 2009

This question has been asked five times before in this forum already! My answer is cut-and pasted from another thread below:

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That's running from the *Inlet* near the turbo, not the exhaust. Even though Honest John says the exhaust, he's wrong.

This is good advice, but only valid for early TDI 90's (AHU, 1Z and the like - Mk2 Ibiza's etc) - the hose is taking manifold pressure to the Manifold Air Pressure sensor, which on these engines is integrated into the ECU. Later engines (including everything bigger than 90bhp, I think) has the MAP sensor in the manifold, together with the Manifold air temperature sensor.

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heard about this before?

twig

Active Member

devonutopia

fabia-lous

twig

Active Member

Muttley

Catch that diesel!

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