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| PaulMc Member Since: 17 Jan 2009 Location: Kent Posts: 502   
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The White 3-way connector, with Pink, Purple/Blue, and Orange wires, is connector C2004, where the link harness for the 2nd-row doors central locking and courtesy lights, connects on the 110 station wagon.
The foam covered Blue connector in your 2nd picture, is the engine harness circuit header C0294 . Paul. 1989 Arles Blue 2.5TD 110 Hardtop 1999 Epsom Green Discovery II 4.0 V8i 'XS' |
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23rd Nov 2015 3:28pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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The black one is probably a power box. As it looks to me that it has one black cable and 5 yellow cables. The yellow one probably connect to 5 yellow ones at the red plug. I am not sure with brand this is. I have a PSI power box and that has the same cables but further completely deifferent.
The other one I guess is a boost box. This reduces the signal from the MAP sensor so your ECU doesn't see a too high turbo pressure other wise it will go in limp mode. Roel 1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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23rd Nov 2015 3:36pm |
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| Clive Member Since: 21 Mar 2014 Location: Littleborough Posts: 467 
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As above
Watch out for that blue header connector, if it gets wet you can get electrical tracking between some of the interconnected circuits and end up with some very strange faults. As Roel says, the silver box with three wires looks like a "turbo boost box", it's effectively a potential divider that reduces the output of the MAP sensor going to the engine ECU and allows the turbo to produce a higher boost pressure. |
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23rd Nov 2015 3:40pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 632  
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The boost box in silver case is not a divider but only a limiter - it masks overboost to prevent ECU going info a fail mode. But it also blocks the overboost protection, so in case of trouble with the wastegate, the engine can get heavily overboosted and/or the turbo damaged. Simple but technically not good solution. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo
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23rd Nov 2015 5:40pm |
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| gazman Member Since: 17 Aug 2015 Location: Liverpool Posts: 652 
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Good job I adjusted the waste gate to lower the pressure then! I found a few days back it was wound up to 9 threads! I will run it flatter till I can get my hands on a boost guage and check properly.
It does go well and doesn't smoke like some chipped or boosted cars. And to be honest I've only ever had it over 70 a few times. I much prefare sitting at 60. Thanks for the heads up guys. I will set the tuning box to a lower level and leave the boost down and see how it goes. 2014 - current ..... 2003 defender td5 90 (my car) 2009 - current .... 2005 zx10r |
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23rd Nov 2015 5:46pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 632
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Proper remap is much better than any tunning box. Tunning box is just fouling the engine ECU.
Remaped engine is not the same as smoking engine. I have tuned some TD5 and sometime we were surprised, that it smokes after remap. After short far run smoke was gone. We have just blown spiders from the exhaust. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo |
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23rd Nov 2015 5:53pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039
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I agree that a prooer remap better is then many tuning boxes but a proper tuning box doesn't have to be bad.
 The advantage off the psi power box that I have is that I can switch it on and off. I normally have it switched off except when I think I need it. So I switch it on just before a steep incline where I need the additional power when off-road. I hardly use it on-road.
Except for some cv joints, a half shaft and a transfer box I didn't damage anything else yet.  Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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23rd Nov 2015 8:18pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 632
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Switching between two setups is nice. I have modiffied some TD5 ECUs to have bigger memory inside, and two different maps, with the possibility of live switching - in my Disco2 it is like one gear down, when I switch from standard map to a better one.
But it is wery hard to switch back to the standard map.  "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo |
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24th Nov 2015 12:03pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039
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I like to come back to this one. The only way to make more power is to give the engine more fuel. El cheapo tuning boxes foul the ECU by faking/changing sensor signals to let the ECU think there is more air in the cylinder then there is. By changing the air temp down, air pressure up, air flow up or even fuel temperature up. Or a combination off these. Looking at the tuning box here it is connected to the injector cables. So this tuning box just extents the injector opening times like my PSI Powerbox does. A remap does in fact the same thing only it tells the ecu to inject more fuel and the more fuel comes by opening the injectors longer. The only thing I couldn't find out is: Where the opening times are extended only on the end or does it also open earlier ( I don't think so) And how does that go with a remap? I think the same. A remap can be better as it can also change other things like idle rpm etc and it can adjust the additional fuel over the rev and load range. The tuning boxes most off the time only give a fixed amount off additional fuel say 10% over the whole rev range while a remap can do something like 5% more fuel before the turbo comes in and 5% till 15% depending on the turbo pressure or something like that. I just want to say not all tuning boxes are the same. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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25th Nov 2015 8:15am |
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