 | Home > Puma (Tdci) > Remapping a 2.4 TDCI - What does it actually mean? |
 
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731   
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So having recalibrated fuel with the remap on, should I expect the scangauge to be inaccurate now?
Please don't be annoyed by me (my children find me very annoying) - I have a scientific background and like to reduce everything to facts and numbers 
I also welcome criticism and correction as long as there is a technical basis  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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5th Nov 2012 7:37pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Deffo agree to use actual data would be better but there's no way I can compare as I'm driving different conditions every tank.
Should fill up again in a week or two, so can see if SG gets screwed up or not - thanks for the heads up Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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5th Nov 2012 8:00pm |
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| bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232  
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Some info re the puma 2.4tdci guages signals and sensors.
INSTRUMENT PACK OVERVIEW The instrument cluster is located in the instrument panel, above the steering column. The instrument cluster comprises analogue gauges and a number of indicator lamps to display system status. ANALOGUE GAUGES The analogue gauges located in the instrument cluster are as follows: Speedometer Tachometer Fuel level gauge ECT gauge. Speedometer The instrument cluster receives a hardwired vehicle speed signal from the vehicle speed sensor. The vehicle speed sensor is a Hall effect sensor located on the transfer box. The sensor acts on a reluctor ring located on the transfer box rear output shaft. Fuel Level Gauge The instrument cluster calculates the amount of fuel in the tank by providing a reference current to the fuel tank level sensor. The fuel tank level sensor uses a float operated Magnetic Passive Position Sensor (MAPPS) for measuring fuel tank contents. The instrument cluster measures the returned output from the sensor, which is proportional to the level of the float arm and consequently the amount of fuel in the tank. The instrument cluster monitors the signal from the sensor at approximately 20 second intervals. This prevents the gauge needle pointer from continually moving due to the movement of fuel in the tank when cornering or braking. Low Fuel Indicator The instrument cluster calculates the amount of fuel in the tank by providing a reference current to the fuel tank level sensor. If the cluster determines the level of fuel within the tank is at or below 14 liters (3.69 gallons) it will illuminate the low fuel indicator and emit a single chime. POWERTRAIN CONTROL MODULE OVERVIEW The ECM processes information from the following input sources: CKP sensor CMP sensor Manifold air temperature and pressure Cylinder head temperature Oil pressure Inlet air flow and temperature Fuel temperature The ECM outputs controlling signals to the following sensors and actuators: Fuel injectors Cooling fan solenoid Electric vane controlled turbo Fuel pressure control valve Fuel volume control valve Electronic EGR Glow plugs The PCM receives a vehicle speed signal . Vehicle speed is an important input to the ECM strategies. The frequency of this signal changes according to road speed. ----------------------------------------------------------------------------------------- The point im politley trying to make is this, the PCM/engine ecu RECEIVES signals re fuel and speed NOT gives them out so a remap CANT mistakenly or intentionally alter any diagnosticly read MPG calculating tools given output figure. Pete Last edited by bell-auto-services on 5th Nov 2012 11:04pm. Edited 1 time in total |
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5th Nov 2012 10:22pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Thanks Pete - just what I was about to say
Still checking my fuel gauge next fill up though, just to dis-spell any doubts  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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5th Nov 2012 10:32pm |
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| o4dn Member Since: 08 Jan 2010 Location: South West Posts: 548  
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Fair enough, yet I would politely report that I can reproduce any time, changing the map does confuse the ScanGauge MPG calculation and requires recalibration. Pete, I can provide you data on PM if you want, I keep MPG record for the last 20k miles or so. I am not saying the remap does not improve MPG, all I am saying is the improvement is nowhere as good as what the ScanGauge reports. Anyway, I was just trying to help here, I sense some disagreement and will avoid posting again. Sorry for the noise. |
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6th Nov 2012 7:52am |
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| Braydog Member Since: 11 Apr 2012 Location: Melbourne Posts: 27  
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I am not so concerned with fuel consumption as long as it performs well. Should I be considering any other upgrades to coincide with a remap to ensure reliability, especially in a hot climate like Austalia Sometimes It is better to ask for forgiveness, than to ask for permission.
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6th Nov 2012 8:23am |
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| BruceT Member Since: 01 Nov 2010 Location: South Africa Posts: 518 
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We also have a hot climate in South Africa and the first thing I did was to put a Allisport Intercooler onto my vehicle. |
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6th Nov 2012 8:25am |
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| Braydog Member Since: 11 Apr 2012 Location: Melbourne Posts: 27
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Hi Bruce,
Sounds liken a good idea. Cheers Sometimes It is better to ask for forgiveness, than to ask for permission. |
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6th Nov 2012 8:30am |
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| Japseroony Member Since: 02 Jan 2008 Location: North East England Posts: 827  
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ofourdan, I hope I have not upset you in any way, hence you not wanting to post anymore on this thered, as If I have I am sorry - just there are so many people poo pooing the claims of decent folk reporting back about a remap and an increase in MPG without any evidence or substantial information as to why not. I have had several re-maps in the past and on my 2.4TDCi can confirm that once the initial use of the power gain grin factor was passed I had a 2 - 3 MPG improvement over all driving conditions including off road. In the D3 it was even better and especially on a long journey Gas, Grass Or Ass - Nobody Rides For Free
"UNDERSTEER" ----is when you hit the fence with the front of the car. "OVERSTEER" ------is when you hit the fence with the rear of the car. "HORSEPOWER" ----is how fast you hit the fence. "TORQUE" -----------is how far you take the fence with you. |
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6th Nov 2012 11:04am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2646 
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I'm getting an Allisport intercooler too. Consumption is already down with the BAS remap, expecting a little bit more reduction with the intercooler. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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6th Nov 2012 11:19am |
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| The Boy Member Since: 28 Aug 2008 Location: East Northants Posts: 1459 
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I think my next buy will also be an intercooler. May also get some of those silicon hoses at the same time. I think some people buy intercoolers, performance exhaust and tune to go faster but there are also people who buy them so the car runs more efficiently. I fall into the latter group, I have kept a detailed record of fuel consumption for more than two years right up to last week when I change my iphone for a new one and lost the last 12 months.
 So I now have to start again. Anyway keeping this record does make me a bit of an anorak but it does give a indication as to what is going on with you vehicle. The best result I have was de-cat and exhaust both in the way it drives and to saving a little fuel. The tune doesn't really work for me but for others it does so i guess it's horses for courses on that. I really do like the way mine runs now and though I think the intercoolers are expensive I will be giving one a go to see if that has any improving effect on the vehicle. One thing I have always wondered is if porting and polishing the head would have any benefit or is that too old fashion and not needed in modern engines?
Boy |
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6th Nov 2012 12:13pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2646
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Use fuelly, see my signature --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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6th Nov 2012 12:15pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6312 
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the boy.
was ony wondering this myself the other day (porting / polishing). I know thats the way to go on naturally aspirated engines but if you've got a turbo doing the work perhaps there's no need (or little need)? I presume it being diesel as opposed to petrol makes no difference? |
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6th Nov 2012 1:00pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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Nothing wrong with that Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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6th Nov 2012 1:19pm |
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