2012 D3 Boost Pressure

richhodgetts · Oct 29th, 2016, 21:25

Hi All,

After fixing a split boost hose I would like to confirm that I am getting the correct boost pressure on my V60 D3. ECU reports 22lbs as a max value - can anyone confirm that this is correct figure?

Cheers

Rich

cheshired5 · Oct 29th, 2016, 21:49

First things first.
22psi boost...... Are you sure about that or is that your MAP reading?

richhodgetts · Oct 29th, 2016, 22:53

22lbs is the pressure reported from the ECU via a bluetooth OBDII adaptor. The inlet manifold pressure is reported as 37lbs - atmospheric + boost pressure?

I am starting to think that 22lbs is too high although there is a lot of conflicting information on the web. The car does not however report any turbo overboost or overspeed warnings.

Cheers,

Rich

cheshired5 · Oct 29th, 2016, 23:22

22psi boost sounds way too high to me but I'm not sure.
I can check Vida next time I'm on.
What is your D5 engine code?

JonesyGT · Oct 30th, 2016, 14:41

Diesels tend to run much more boost than petrol engines, my old golf gt tdi 150pd ran at 24psi.

GMcL · Nov 7th, 2016, 14:28

My 2011 S60 D3 runs 1.5bar which is a shade under the 22psi you are reporting.

cheshired5 · Nov 7th, 2016, 14:52

Having looked into this a little more, it appears that the D3 (D5204) achieves similar power to older higher cc versions (D5244) by using higher rail pressures and boost so 22psi is normal it would seem.

5cilinder · Nov 12th, 2016, 04:51

Lower compression ratio higher boost pressure , older idi 22-1 compression had maximum 0.9 boost
Very new diesels with efficient (low heatloss) combustion chambers can get away with lower compression ratios to burn the fuel , wich makes higher boostpressures possible (and the high power output) without damaging the engine

richhodgetts · Nov 15th, 2016, 21:09

Thanks for the information all - the car seems to be running pretty well at the moment. These ELM327 based OBDII interfaces are a geeks dream!

Oct 29th, 2016, 21:25	#1
richhodgetts Junior Member Last Online: Jun 9th, 2021 23:13 Join Date: Jul 2015 Location: worcestershire	2012 D3 Boost Pressure Hi All, After fixing a split boost hose I would like to confirm that I am getting the correct boost pressure on my V60 D3. ECU reports 22lbs as a max value - can anyone confirm that this is correct figure? Cheers Rich

Oct 29th, 2016, 21:49	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	First things first. 22psi boost...... Are you sure about that or is that your MAP reading? __________________ 2002 S60 SE D5 Manual 209000 miles

Oct 29th, 2016, 23:22	#4
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	22psi boost sounds way too high to me but I'm not sure. I can check Vida next time I'm on. What is your D5 engine code? __________________ 2002 S60 SE D5 Manual 209000 miles

Nov 7th, 2016, 14:28	#6
GMcL 0's and 1's Last Online: Apr 26th, 2024 11:04 Join Date: Nov 2006 Location: -	My 2011 S60 D3 runs 1.5bar which is a shade under the 22psi you are reporting. __________________ 2011 Volvo S60 D3 R-design Premium - 2020 Focus ST estate automatic - 2020 KIA eSoul 150kW 64kwh EV Previous: 2005 Volvo S60 D5 Sport - 2017 Focus RS

Nov 7th, 2016, 14:52	#7
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	Having looked into this a little more, it appears that the D3 (D5204) achieves similar power to older higher cc versions (D5244) by using higher rail pressures and boost so 22psi is normal it would seem. __________________ 2002 S60 SE D5 Manual 209000 miles

Oct 29th, 2016, 22:53	#3
richhodgetts Junior Member Last Online: Jun 9th, 2021 23:13 Join Date: Jul 2015 Location: worcestershire	22lbs is the pressure reported from the ECU via a bluetooth OBDII adaptor. The inlet manifold pressure is reported as 37lbs - atmospheric + boost pressure? I am starting to think that 22lbs is too high although there is a lot of conflicting information on the web. The car does not however report any turbo overboost or overspeed warnings. Cheers, Rich

Oct 30th, 2016, 14:41	#5
JonesyGT New Member Last Online: Oct 8th, 2020 14:02 Join Date: Aug 2008 Location: Lancs	Diesels tend to run much more boost than petrol engines, my old golf gt tdi 150pd ran at 24psi.

Nov 12th, 2016, 04:51	#8
5cilinder Premier Member Last Online: Yesterday 15:51 Join Date: Oct 2011 Location: Groningen	Lower compression ratio higher boost pressure , older idi 22-1 compression had maximum 0.9 boost Very new diesels with efficient (low heatloss) combustion chambers can get away with lower compression ratios to burn the fuel , wich makes higher boostpressures possible (and the high power output) without damaging the engine

Nov 15th, 2016, 21:09	#9
richhodgetts Junior Member Last Online: Jun 9th, 2021 23:13 Join Date: Jul 2015 Location: worcestershire	Thanks for the information all - the car seems to be running pretty well at the moment. These ELM327 based OBDII interfaces are a geeks dream!

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