 | Home > Puma (Tdci) > Remap and noises after engine shutdown. |
 
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| Happyoldgit Member Since: 14 Sep 2007 Location: Norfolk Posts: 3471   
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Having decided to hang on to my 110 XS USW for another year and as it is now out of warranty I decided to treat it to a remap from Pete at BAS. I'm happy with the results but puzzled by what appears to sound like the turbo winding down for a quite a few seconds after the engine is shutdown from idle. Obviously the EGR is no longer doing it's chuka chuka song which may have hidden other sounds but I have confirmed that the winding down is not present after I re-installed the standard tune, with the remap I get the noise from the turbo area.
I contacted Pete about this but we are both puzzled by the phenomena. Everything is functioning as it should, performance is just as it always has been, no smoke and there are no other strange noises or dodgy fault-codes. Ideas on a post card please  Steve.
Owned numerous Land Rover vehicles of all shapes and sizes over the decades. Current Defender: A non tarts hand-bagged Puma 110 XS USW. [Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc] http://forums.lr4x4.com I used to be Miserable ...but now I'm ecstatic. |
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9th May 2013 11:55am |
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if you don't| Porny Site Sponsor Member Since: 31 Aug 2009 Location: Sutton Coldfield - West Midlands Posts: 809 
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All down to turbo speed and spool down....
Ian IRB The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers. www.IRBdevelopments.com www.facebook.com/irbdevelopments www.integrated316.com www.facebook.com/integrated316 |
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9th May 2013 2:54pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17354 
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Mine does the same, I never noticed the sound before the no-egr remap. Assume it to be the turbo.
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9th May 2013 3:11pm |
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| Happyoldgit Member Since: 14 Sep 2007 Location: Norfolk Posts: 3471
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That's what I thought, it doesn't do it with the standard map. Missus commented on it getting out the vehicle t'other day and it must be loud for her to notice. Steve. Owned numerous Land Rover vehicles of all shapes and sizes over the decades. Current Defender: A non tarts hand-bagged Puma 110 XS USW. [Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc] http://forums.lr4x4.com I used to be Miserable ...but now I'm ecstatic. Last edited by Happyoldgit on 9th May 2013 3:22pm. Edited 1 time in total |
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9th May 2013 3:19pm |
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| borderterrier Member Since: 09 Dec 2011 Location: Surrey Posts: 1677 
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Does that mean the turbo is spinning faster/working harder than with the factory software?
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9th May 2013 3:21pm |
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| Porny Site Sponsor Member Since: 31 Aug 2009 Location: Sutton Coldfield - West Midlands Posts: 809
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In this case it's running faster than standard when it comes down to idle/shutdown... hence why it spins for longer than with a standard calibration. Ian IRB The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers. www.IRBdevelopments.com www.facebook.com/irbdevelopments www.integrated316.com www.facebook.com/integrated316 |
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10th May 2013 6:41am |
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| Sonarmender Member Since: 04 Apr 2013 Location: Guz Posts: 338  
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That will mean a new Turbo sooner rather than later then...bearings just love to run without oil ! You only have one life, live it....forget the cost.
90XS Hardtop |
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10th May 2013 10:05am |
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| Happyoldgit Member Since: 14 Sep 2007 Location: Norfolk Posts: 3471
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That is what is in the back of my mind too. Steve. Owned numerous Land Rover vehicles of all shapes and sizes over the decades. Current Defender: A non tarts hand-bagged Puma 110 XS USW. [Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc] http://forums.lr4x4.com I used to be Miserable ...but now I'm ecstatic. |
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10th May 2013 10:26am |
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| RobKeay Member Since: 19 Jul 2009 Location: Stafford Posts: 1579
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Would this mean you should let engine tick over for a minute when you have stopped. To keep oil running round turbo.
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10th May 2013 11:34am |
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| smb Member Since: 15 Jan 2013 Location: Cheshire Posts: 1232 
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I know technology has changed over the years, but I was always told to keep the engine running a short while after the turbo had stopped for this very reason. When we had Auxiliary Turbo Engines that were running at 4,000rpm 8hrs/day we would have to leave them on low revs for about 10-15mins. You could always tell which operators didn't as they would get through more Turbos than those that did. |
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10th May 2013 11:43am |
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| Happyoldgit Member Since: 14 Sep 2007 Location: Norfolk Posts: 3471
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Yep, I generally do that. Steve. Owned numerous Land Rover vehicles of all shapes and sizes over the decades. Current Defender: A non tarts hand-bagged Puma 110 XS USW. [Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc] http://forums.lr4x4.com I used to be Miserable ...but now I'm ecstatic. |
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10th May 2013 11:45am |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769 
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I think you can get certain car alarms with the spool down feature so you don't have to sit in the car which could be worth thinking about.
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10th May 2013 12:17pm |
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| bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232 
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If the car is at idle speed, standard map the turbo is spinning at X speed and the egr is open and the air breathed is coming from two paths. The exhaust gas via the egr and rest the air intake via the turbo.
If the car is at idle speed, tuned map, egr closed as its deactivated. The air now is only getting breathed from one source. The air intake so induction noise may and will differ from a egr on car to a egr closed car. This of course goes totally out of the window if you are just tuning the engine off while its still revving after pulling up in the car and not letting it idle first. For reference the turbo vgt position on a standard and tuned map at idle is the same start point. Hope these words help the understanding. Pete |
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10th May 2013 6:34pm |
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| borderterrier Member Since: 09 Dec 2011 Location: Surrey Posts: 1677
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Hence my question. The longer term issues may end up outweighing the initial buzz that comes with a remap. |
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10th May 2013 7:29pm |
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