Technical Boost pressure

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Technical Boost pressure

Mazhasai

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Joined
May 10, 2011
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2
Hello,

I own a Stilo 1.9JTD (85kW - 115HP), recently it has lack of power. I've connected FiatECUScan, and noticed that boost pressure and desired boost pressure is very different (see picture attached). I cannot find anywhere what boost pressure should normaly be. So is it normal, or my turbo is faulty? Could it be that boost pressure solenoid is faulty?

P.S: Sorry for my poor English :)

2z9ac7n.jpg
 
Joined
Oct 21, 2007
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1,057
Location
north wales
if that figure is actual boost, it works out about 20psi which must be around normal good level of boost if not higher than expected for a 115bhp.
if its map pressure its quite low take off atmospheric = 5 psi
has it got any problems?split hoses, boost leaks,stuck egr?
 
Joined
Sep 29, 2008
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6,175
Location
Wolverhampton
On the 3 cars I've checked "Boost" against "Desired Boost" - boost has always been slightly higher than desired boost so IMO you have a problem. Faulty boost solenoid, cracked hose, faulty MAP sensor etc.

What the boost presure should be varies according to throttle possition etc.
 
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