Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > XC90 '02–'15 General

Notices

XC90 '02–'15 General Forum for the P2-platform XC90 model

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

K&N air filter for petrol 2.5T XC90, is it worth it?

Views : 571

Replies : 9

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Dec 10th, 2018, 17:50   #1
esm
New Member
 

Last Online: May 20th, 2023 09:28
Join Date: Jun 2009
Location: London
Default K&N air filter for petrol 2.5T XC90, is it worth it?

Hello again

I have been meaning to ask and couldnt find much info about this for my 2005 2.5T XC90 petrol...

Wanted to check if it is worthwhile putting one in or should I just stick with the paper version inside the air box? They are not exactly cheap (£5x-ish), so wanted to double check.

Thank you again.
esm is offline   Reply With Quote
Old Dec 10th, 2018, 20:35   #2
Bigjimknickers
Member
 

Last Online: Sep 12th, 2021 09:19
Join Date: Jan 2018
Location: Guildford
Default

I would say yes- as the 2.5T is the 5cylinder petrol engine in the focus st & other fast volvos it would no doubt benefit from a cold air intake/de cat/re map.
All 3 would see a huge improvement!
Bigjimknickers is offline   Reply With Quote
Old Dec 10th, 2018, 23:16   #3
SwissXC90
Premier Member
 

Last Online: Mar 20th, 2024 19:26
Join Date: Jan 2016
Location: Cross Country
Default

Note carefully that de-cat is now illegal in the UK and an instant UK MOT failure

Any tampering with the emissions control systems is an immediate MOT failure

My XC90 has an existing Cold Air Intake: the intake air is sucked in at the very front of the vehicle, well ahead of any hot engine components.

Re-mapping is another story: mine is remapped and works well.

I was observing 1.4 bar of boost and intake air flow of over 400 kmph today
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
SwissXC90 is offline   Reply With Quote
Old Dec 10th, 2018, 23:30   #4
esm
New Member
 

Last Online: May 20th, 2023 09:28
Join Date: Jun 2009
Location: London
Default

Thank you all for the replies so far and understood about the de-cat.

I will attempt to get the air filter first and look into the re-map.

Anyone in the UK for the re-map?

Thank you all again.
esm is offline   Reply With Quote
Old Dec 11th, 2018, 08:03   #5
SwissXC90
Premier Member
 

Last Online: Mar 20th, 2024 19:26
Join Date: Jan 2016
Location: Cross Country
Default

Whatever you do, do NOT fit an oil-impregnated air filter. These often stuff up the Mass AirFlow Sensor with oil deposits.
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
SwissXC90 is offline   Reply With Quote
Old Dec 11th, 2018, 10:31   #6
esm
New Member
 

Last Online: May 20th, 2023 09:28
Join Date: Jun 2009
Location: London
Default

Quote:
Originally Posted by SwissXC90 View Post
Whatever you do, do NOT fit an oil-impregnated air filter. These often stuff up the Mass AirFlow Sensor with oil deposits.
ah, thanks - but is all K&n air filter are oil impregnated air fitters?

This is the replacement one i was referring to..

https://www.knfilters.com/air-filter...xc90/2.5l/2005

esm is offline   Reply With Quote
Old Dec 11th, 2018, 14:18   #7
Tannaton
Bungling Amateur
 
Tannaton's Avatar
 

Last Online: Yesterday 20:51
Join Date: Aug 2014
Location: Beverley, East Yorks
Default

My two penneth - it is probably not worth it.

It is a forced induction engine where the airflow/boost is managed electronically so if a slightly less free-flowing filter is fitted, it just sucks a bit harder on full chat.

Hence I doubt you will notice any difference, other than a lighter wallet.

If it was a normally aspirated engine like the 3.2 or V8 then I would have a go.

You could always take the existing air filter element out and go for a short drive to see if it make any difference...
__________________
2011 XC90 D5 Executive
2003 C70 T5 GT
2012 Ford Ranger XL SC
1977 Triumph Spitfire 1500
1976 Massey Ferguson 135

Last edited by Tannaton; Dec 11th, 2018 at 14:21.
Tannaton is offline   Reply With Quote
The Following 2 Users Say Thank You to Tannaton For This Useful Post:
Old Dec 11th, 2018, 15:34   #8
SwissXC90
Premier Member
 

Last Online: Mar 20th, 2024 19:26
Join Date: Jan 2016
Location: Cross Country
Default

Tannaton is totally right: the engine management system will out-manage you and any changes you try make to the induction side.
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
SwissXC90 is offline   Reply With Quote
The Following User Says Thank You to SwissXC90 For This Useful Post:
Old Dec 11th, 2018, 15:38   #9
esm
New Member
 

Last Online: May 20th, 2023 09:28
Join Date: Jun 2009
Location: London
Default

yeah i understand - that makes sense.

thank you for the enlightenment, i will keep the paper air filter
esm is offline   Reply With Quote
Old Dec 11th, 2018, 16:36   #10
robsterpaterson
Member
 

Last Online: Feb 13th, 2023 23:09
Join Date: Aug 2018
Location: Maybole
Default

Is it necessary, how much does the stock filter flow? For instance, the stock Saab 93SS filter/airbox is good for 300bhp.
__________________
'11 XC90
'84 GPz900R
'98 T595 Daytona
'01 ZX12R
robsterpaterson is offline   Reply With Quote
Reply


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

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 09:39.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.