Help needed please p0170 code

[Automoto]

Hi all
In need of some help
Got a Volvo s40 2.0l turbo
2003
With 2 fault
P0107 map sensor low input
And dreaded p0171 which is driving me nuts :-(
Checked m a f and map
Checked exhaust and fix leak
Smoked intake manifold
Changed fuel filter
Only thing finding is lamb sensor 1 is slow switching and lamb sensor 2 is dropping a bit
On idle
Lt fuel trim is 18
Short term is going up to 9.7
Any help would be gr8
After spending 2 days on it :-(

[MJRVR]

Hi all
In need of some help
Got a Volvo s40 2.0l turbo
2003
With 2 fault
P0107 map sensor low input
And dreaded p0171 which is driving me nuts :-(
Checked m a f and map
Checked exhaust and fix leak
Smoked intake manifold
Changed fuel filter
Only thing finding is lamb sensor 1 is slow switching and lamb sensor 2 is dropping a bit
On idle
Lt fuel trim is 18
Short term is going up to 9.7
Any help would be gr8
After spending 2 days on it :-(

Which is it?
P0170
or
P0107
Worth trying a New Oxygen sensor?

[Automoto]

P0171 lean condition :-)

[smokey08]

How did you check the map sensor? What are the readings from it 1: without the engine running and 2: with the engine at idle?

[Automoto]

with a scope m8 plus iv swaped it around
cheers for reply

[genius76]

pressure to small and mix to lean
what turbo pressure in live data, if here vacuum regulated turbo and fuel pressure regulator also vacuum regulated, for me looks related
sorry didn't know to many about these engines, but in my opinion looks related to vacuum problem
just in case check vacuum in driving condition should be 1 bar

[Automoto]

Ok thank
will will check Monday :-)

[MJRVR]

Have you checked the EGR isnt sticking open?
That would be unmetered air going in.

[Automoto]

Thank u all for help car was collected failed to fix :-((