sorry for bad english I have a problem with the Fiat Stilo JTD 2002
Low Power untill reach 2000 rmp-a then is good but not like beafore. i have done smoething egr clean, close, map sensor clean and try deffernt, boost valve resite i have bay new one isnt brand new, i have look split pipes of vacum....the turbo is reabilt new all...
On multiscan i have notice that my boost pressure in intake manifold 930mbar and dessire pressure is 1240mbar that too mach deference if anybody know what is about i dont understan why i have dessire pressure so high the car is not ramping no chip tuning i asume that is a problem with too low boost in drive its like sdi motor i have lost 30% power in start i dont now what to try next
if somebady can tell mi this dessire pressure who is responsubule which sensor why i have so high dessire pressure and how can I rise the presure in manifold to much is a differnece beatvin boost preesure and desire pressure 930mbar- 1230-40 mbar
thanks

with fes try selecting parameters
revs
ambient air pressure
actual boost pressure
desired boost pressure
start car and check at idle , key off for a few seconds then key on for a few seconds but dont try to start the engine this should show ambient and actual boost from map sensor and ambient boost sensor(not sure where it is)but will only read real value a few seconds then give a made up value(i found doing similar tests)
if the map sensor reads way below ambient with key on i would suggest your new map sensor is no good.
also if you check weather station for ambient air pressure at the time and find an online calculator to find drop in mbar for altitude , then find your altitude on a map etc, you can double check the ambient barometric pressure sensor.
i would expect say at sea level ambient say 1008mbar, map sensor at key on say 990mbar-1020mbar(not likely spot on)
930mbar would suggest your at a very high altitude or have other issue.
if it is another issue you may want to check for obstructions at airbox inlet /snorkel/ airfilter / maf sensor screen /turbo inlet/ between turbo and manifold inlet inc intercooler(what happened to old turbo? did it blow up?)
also could be the antishudder flap in the entrance to the inlet manifold, should open up on car starting and close down when car stops to starve of air to prevent shudder, i think its vac operated and pulling against spring(i put vid on here somewhere of flap operated with fingers search anti shudder)
if its pretty close at key on then gets worse at idle then gets even worse at revs id be looking for obstruction to inlet, say pistons are sucking more than what they can receive and creating a vac.
also 1400mbar is pretty low boost anyway dont be suprised to see 2200-2300mbar at high loads(all fes is absolute eg sensor out of car would still read 1000mbar)

Thanks for fast reply, I dont understand many off what did you say i will try too translate a bit,
My pistons are in good shape, i dont lose any off oil i have past 3000 km with this turbo i didint lose a drop of oil.
old turbo has blow up and with that torbo i have lose oil on 10000 km about 1 lita or more bit 2000km 1/4 of liter.
now after new torbo not a drop or minore my car as 200 000 km past original dont change km
why do you say 1240mbars dessire presure is a bit smal i have compared diferent stilo the are 980mbar boost presure 980 desire presure same i didn see stilo that have boost over 1000 mbar
my problem is that i dont have presure in mainfold i have change map senzor to try it same thing
i will try those things that did say to try and i will be back after

quickest thing would be to remove the map sensor from manifold and start the car, if the map pressure is more normal 1000mbar or so good.
if you refit it in the manifold and it drops to 930mbar again then your looking for something blocking the intake air.
you understand if atmospheric pressure is 1013mbar and your map sensor is saying 930mbar it is actually negative pressure or vacuum of 83mbar.
ill try to find that other thread for you.
here it is
https://www.fiatforum.com/stilo/336871-phillipb82-intermittent-warning-light-flat-spots.html
has video of anti shudder flap.
whilst running fes you could manually operate this flap and see if it alters boost pressure at idle, for better or worse( if you close it don't be surprised if it stalls )

If i undestad you asum that i remove map senzor out side of mainfo and star the car map is outside with wirreing what i need to reed what messures i need to see more down off 930mbar or more up 1240 ...
i go to try it now

just select atmospheric pressure and boost pressure in multiscan start car let idle and record values.
then remove map sensor out of the manifold but reconnect the wire to it(so its reading atmospheric pressure also)and start the car let idle and record the values again.
don't let anything get sucked in where map sensor fits with the engine running, and don't break the map sensor end.
put results up on here, and we will see what to do after that.

while you do this or after replacing the map sensor get someone to start and stop the car and observe the antishudder flap opening and closing on shutdown(might open again after shutdown)

if you give me your location and altitude above sea level I will tell you what atmospheric pressure should be.
example sarejo is 1016mbar at sea level today, if you are at approx. 3,000ft altitude then 930mbar is probably not far off atmospheric.
http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
2000ft 960mbar approx
1000ft 990mbar approx

I have been at car when you send mee this second reply, thank you very much i didin do exekly what did you say in second reply beacose i was in the car and try what did you say
engine off boost preasure 930
desire preasure 1533mbar
turn on engine idile
bosst presure 933
desire 1233
map out from engine
engine off 930
desire 1533
engine on 933
desire 1230 may be some decimals up nut much


i will send you picture of all multiscan data ok can I thank you agen veri mach
and this ventil off shuting down engine when i pres it down when engine is off is coming back

no idea why desired boost is so high for idle?
id expect it to be 1000-1010mbar at idle speed desired boost.
is the car engine warm and idle 850rpm or is it at a fast idle 1000rpm+
what is multiscan showing as atmospheric pressure ?

five month i have this problem with less of power boost car is not going as he was with old torbo , i have reaplec and try 3 turbo charger alwas same i didin have car like beafore,
I will send you pictures and may bi same drive parametars when is driving the car
i dont now what else to do
now i will see to send you parametars off all
my car isnt ramped not tuning chip
beacose last programing of ecu is 2001 and my car 2002 i asume that nobady is programing ecu ...
desire boos is always 1230-40 idile when is warm same 850 rmp, when i push gas padal is going up much moe

picture idile 850 rmp stilo jtd

http://s4.postimg.org/4fqer7ra5/stilo.jpg

what engine is yours 115hp?
some data looks right is ambient temperature there hot as fuel temp is 31c and maf air temp is 32c
egr is not active so should not be open.
atmospheric shows 943mbar and map shows 935mbar , as said if your at altitude approx. 2500ft this could be real atmospheric/boost at idle pressure.
value that looks very low is maf at 288mg/I
this appears to be too low expect more like 485mg/I with egr closed
try a temporary egr blank and see if maf airflow increases.
also try disconnecting maf at the sensor plug and drive the car, if power returns most likely maf bad.
but could also be an air leak in hose after maf from vapour trap pipe or engine breather pipe.so maf could be good but air bypassing the sensor and giving false low reading.
with the history of turbo blowing id suspect egr stuck open and try an egr blanking plate next.
also im still not sure why desired boost is 1213mbar? pedal is confirmed at 0%
can you do a similar log but just do
revs
desired boost
actual boost
intake air quantity maf
total fuel quatity (id expect around 4mg/i to 5mg/I at idle)

if you want to show a log with car driving log less parameters and go into graph header
something like
revs
total fuel
actual boost
desired boost
and
revs
actual boost
vnt solenoid
intake air quantity maf

i will do what did you say i will bring data et driving car, egr i have closed about a month same is it with class or open now is closed no air go in egr beacose i have closed beafore air to go in him i have clening ..i closed egr beacose i didnt go back 300 km home sudnle has stuck 300 km from my home i improvased just plug pice off metal to closed and go back home after i have desable clen and proporli closed ....samo was with egr open and close ..ok wi will comunicate tomorow i will try to do driving parametars ..
1230 mbar desire problem idile 850 rmp ....wtf..

take a look at boost map

revs down left edge
total fuel quantity across top edge(2800=28mm3)
value in map=desired boost value mbar
ive highlighted that requested boost around 1200mbar
so either revs are higher or the total fuel quantity is in the 24mm3 to 28mm3 range which is not what id expect for a warm engine at idle speed.
try similar to your above screenshot with just
revs
total fuel quantity
desired boost
actual intake air quantity maf

sometimes too many parameters being logged no good

when i send you parametars the engine was not hot is coold temp 0 coold i didnd drive car hole day was outside i did not chek with temperatue engine 90-100 degrise

that sounds more like it then
it probable cranked well over 1000 rpm ad was on high idol speed requiring more fuel which was requesting higher boost.
you havnt confirmed yet your location or altitude ? so barometric and map sensor are giving real values?
egr if blanked means maf is suspect giving too low value, try unplugging maf and drive.
do some actual logs in graph header will be more helpful than snapshots in time.
heres a log of a trip to work, you can see my boost/atmos is low at start(atmospheric and boost virtually same at idol) and by the time I get to work ive dropped from 1100ft to near sea level and boost atmos is over 1000mbar.
I wasn't logging desired boost but if I was desired boost at start would still have been around 1000mbar(doesn't take into accound the low atmospheric pressure).
cant upload my log for some reason?

heres cold start 1100ft idle

and heres near sea level high load high boost

heres sea level end of trip idle again

actual boost around 60mbar higher just from altitude change

sorry my rp was 845-850 rmp its cold engine but that parametar that i give you is 845-850 rmp idile i was look it beafore i take a snapshot..
tommorov i hope i will take a parametars driving the car i sand here i have told you i have this problem5-6 month noubady has a time or knoling to resolve the problem eveybady say desire boost but nobady say whay is it so high
I didnt tray maf senzor deferent beacose i asume if maf is bad i have big consaption of disel my car open roud 5 liters.with aircondition 5.2. 5.3 liters maf is ok ba me i dont know i will send you parametars tommorow thanks again.

My location is Sarajevo , Bosnia and Hercegovina, i will drive car to day and will send you parametars see you
and car have 115hp

here are parametars start and end
end idile
and something midle
can you send me email beacose i cant uplod doc file
here is link to download file i have ziped 3 files inside

https://www.sendspace.com/file/vpc859