D5 185 polestar boost pressure?

A lex · Jul 25th, 2015, 18:28

Hi all,

Does anyone know how much peak boost a Polestar D5 185 (205bhp map) should produce.

Im having problems with my car, and at its peak its producing around 2700hPa (>25psi) boost.

Area highlighted in red is where I have a reduction in power and DTCs for MAF and Ho2S are set.

This seems high, but im not 100% sure what a remapped car should be producing.

Anyone with knowledge?

Thanks.

dustbug69 · Aug 27th, 2015, 11:16

Ive got an S40 D5 polestar i would e-mail Polestar direct they are pretty helpful if you quote your VIN,

Curly59 · Aug 27th, 2015, 13:46

Hi, I have vida, and a shark remap which I can switch back to standard 185. I could run the test both ways and give you the plots.

Might help? or give some clue's?

Only trouble is don't have a lot of time to spend on Vida so its fair to say bit of a novice!

PM me with how you run the parameters for engine etc and I'll give it a go if you feel it would be useful.

Regards

A lex · Aug 27th, 2015, 13:50

Hi folks,

Thanks for the replies.... Coincidental timing as Polestar actually emailed me back yesterday, albeit with a completely useless answer...

"It might be producing a bit too much boost, it might not - take it to the dealer" ! Great, definitely worth the wait.

My IC was blown, so i replaced that and its running nicely again.

Thanks for the offer with the comparison maps, not needed in my case but I'm sure others might find it interesting to see, if you ever get the time.

Cheers

850Chris · Aug 27th, 2015, 21:15

Out of interest, did the intercooler blow as a result of the re-map or was it damaged in some other way? Heard the D5 intercooler can be a bit weak.

dme123 · Sep 4th, 2015, 12:23

I have a 2008 C70 D5 with an MTE remap to a claimed 225bhp. Attached graph below shows my MAP and desired boost pressures on a graph.

As you can see mine seems to peak at a similar level to yours, 2700hPa or so. This would suggest that level of boost is normal for a remapped car, but I'd love to see a graph from a stock D5 to see what it does. 25PSI is not particularly high for a modern diesel engine (although it'd be a lot of boost for a petrol), I'm sure up to 30psi is not at all unusual.

Jul 25th, 2015, 18:28	#1
A lex Premier Member Last Online: Jun 21st, 2022 08:16 Join Date: Jan 2012 Location: Maastricht View Photos By: A lex	D5 185 polestar boost pressure? Hi all, Does anyone know how much peak boost a Polestar D5 185 (205bhp map) should produce. Im having problems with my car, and at its peak its producing around 2700hPa (>25psi) boost. Area highlighted in red is where I have a reduction in power and DTCs for MAF and Ho2S are set. This seems high, but im not 100% sure what a remapped car should be producing. Anyone with knowledge? Thanks. __________________ 2007 V70 P3 2.0 Ex: 01 V70 T5, 04 S60 D5, 05 V70 D5, 09 XC90 D5 Other cars: MINI Clubman Cooper S, GMC Yukon XL Denali 6.2L, Ford Mustang GT 5.0 Supercharged 735bhp.

Aug 27th, 2015, 13:46	#3
Curly59 Member Last Online: Sep 6th, 2023 20:48 Join Date: Apr 2013 Location: Stoke on Trent	Hi, I have vida, and a shark remap which I can switch back to standard 185. I could run the test both ways and give you the plots. Might help? or give some clue's? Only trouble is don't have a lot of time to spend on Vida so its fair to say bit of a novice! PM me with how you run the parameters for engine etc and I'll give it a go if you feel it would be useful. Regards __________________ XC90 Active Geartronic 2010 D5 185, Black, XC side steps, volvo garmin nav, added Westfalia towbar, space saver tyre, Shark remap 220 bhp (now 134k on the map).

Aug 27th, 2015, 13:50	#4
A lex Premier Member Last Online: Jun 21st, 2022 08:16 Join Date: Jan 2012 Location: Maastricht View Photos By: A lex	Hi folks, Thanks for the replies.... Coincidental timing as Polestar actually emailed me back yesterday, albeit with a completely useless answer... "It might be producing a bit too much boost, it might not - take it to the dealer" ! Great, definitely worth the wait. My IC was blown, so i replaced that and its running nicely again. Thanks for the offer with the comparison maps, not needed in my case but I'm sure others might find it interesting to see, if you ever get the time. Cheers __________________ 2007 V70 P3 2.0 Ex: 01 V70 T5, 04 S60 D5, 05 V70 D5, 09 XC90 D5 Other cars: MINI Clubman Cooper S, GMC Yukon XL Denali 6.2L, Ford Mustang GT 5.0 Supercharged 735bhp.

Aug 27th, 2015, 21:15	#5
850Chris Premier Member Last Online: Aug 16th, 2017 20:12 Join Date: Aug 2006 Location: Fife (Scotland)	Out of interest, did the intercooler blow as a result of the re-map or was it damaged in some other way? Heard the D5 intercooler can be a bit weak. __________________ 2004 V50 T5 SE Manual Now sold, off to BMW land for a while.

Aug 27th, 2015, 11:16	#2
dustbug69 dustbug69 Last Online: Mar 10th, 2016 11:07 Join Date: Mar 2015 Location: Carmarthen	Ive got an S40 D5 polestar i would e-mail Polestar direct they are pretty helpful if you quote your VIN,

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)