 | Home > Puma (Tdci) > Remapping a 2.4 TDCI - What does it actually mean? |
 
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| Regard Member Since: 08 Dec 2011 Location: RSA Posts: 251   
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Whats news? When is your "new" Puma due? |
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5th Nov 2012 1:50pm |
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| BruceT Member Since: 01 Nov 2010 Location: South Africa Posts: 518
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About a week or so is what I've just been told. The wait is killing me!  |
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5th Nov 2012 1:52pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731  
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If you would like a very good and objective reason to get a BAS remap, here's one...
Testing fuel consumption on the same "granny run" home of 5 km Munich City roads and 20 km autobahn: Fuel consumption before remap 8.3 l/100km or 34 mpg Fuel consumption after remap 6.9 l/100km or 41 mpg Bear in mind I keep my speed to 80 km/h on the motorway and use whatever gear necessary to minimise consumption throughout. I know these may look like crazy figures but they are measured using Scangauge II on identical runs. Mine is a 110 SW running on Discoverer ST/Maxx 265s. I can now drive at 100 km/h using the same fuel I used to need at 80 km/h. I have not tested driving like a loony or with a 2 tonne trailer on the back. I am not into performance cars and would not attempt to compare handling etc. but acceleration it somewhat improved. I think the fuel consumption will be interesting to a lot of people. I just like solid figures. Please note I am NOT making any comparison between tuners (as I have no experience). My remap just happens to be from BAS. 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 3:39pm |
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| o4dn Member Since: 08 Jan 2010 Location: South West Posts: 548  
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Are those figures taken from the ScanGauge or computed on actual measured data?
Reason I'm asking is because these seem to be extremely optimist figures while the ScanGauge will need recalibration after a remap, or else it may let you believe the fuel consumption has drop dramatically (whereas it hasn't). |
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5th Nov 2012 3:49pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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What do you mean recalibration?
How does the remap change the measurements - do kilometers get shorter or litres get bigger? I'm interested 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 4:10pm |
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| o4dn Member Since: 08 Jan 2010 Location: South West Posts: 548
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The SG needs initial calibration as stated in the user manual (ie adjust the volumes of fuel actually loaded at each fuel up).
By installing the remap, you change a lot of parameters of your engine, so the SG will need to be re-calibrated again, otherwise the values you read on your SG will be inaccurate (and way too optimistic). All I'm saying is the only way to get an accurate mileage measurement is to measure actual distance against actual volumes, and calibrate your SG against these measures. |
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5th Nov 2012 4:27pm |
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| big steve Member Since: 24 Dec 2009 Location: hertfordshire Posts: 2456  
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I have one at the workshop that came off my 2.4 before swapping engine it was the first prototype one for development work it worked fine with and without a tune but best gains were when it was remapped
Very nice bit of kit shame I've got to give it back to pete although I'm sure a new one will be sent to replace the one currently on the 3.2 Steve 2015 2.2 tdci hardtop xs 3.2 conversion DONE 238bhp and 707nm torque and thats just the start ;-P hybrid turbo in build -done ready to fit ashcroft atb in transfer box 6 speed auto in build |
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5th Nov 2012 4:30pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Ah - I recalibrate fuel every fill up (surprisingly accurate) but haven't done it since remap. Have to fill up tonight so will double check the figures and post results.
Cheers 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 4:32pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Good to know 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 4:34pm |
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| Japseroony Member Since: 02 Jan 2008 Location: North East England Posts: 827  
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Confused here from the North East - how does a SG work? Is it user adjusted i.e. every time you fill up you tell it and you input the miles travelled  or is it connected via OBD somehow
If user input then I dont see why a recalibration is needed as ZeDefender would work out how much fuel was used and over what mileage
Help please 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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5th Nov 2012 7:09pm |
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| o4dn Member Since: 08 Jan 2010 Location: South West Posts: 548
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How a ScanGauge works is a question for ScanGauge, I cannot tell. But I am convinced the values given by the SG are an approximation, not actual values, and changing the fuel map does confuse the ScanGauge...
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5th Nov 2012 7:22pm |
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| Japseroony Member Since: 02 Jan 2008 Location: North East England Posts: 827
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If you are posting saying this then please back up what you are saying by explaining how  as I for one cannot work out why it would 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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5th Nov 2012 7:26pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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I just got a message from Pete that the remap doesn't change any of the fuel, speed or mileage signals from the ECU.
It is possible that the Scangauge is a bit inaccurate overall (although it was only 2 litres out when estimating my fillup this evening) BUT I now do not believe there can be a problem with the comparison. Even if the "corrected" consumption before remap was 25 mpg, the figure after remap would be 30 mpg. I know using Scangauge isn't as good as running two whole tanks and comparing mileage but that would be impossible to do under controlled conditions. It's the percent improvement that interests me... and others perhaps
p.s. sorry Japseroony - Scangauge gets fuel level, speed and distance info from the ECU and uses them to calculate fuel consumption, fuel left in tank and calculates realtime how far you can keep driving on your current tank. You can recalibrate the fuel level each fillup by adjusting the scangauge to match the fuel you put in. It is amazingly accurate  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... Last edited by ZeDefender on 5th Nov 2012 7:33pm. Edited 1 time in total |
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5th Nov 2012 7:27pm |
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| o4dn Member Since: 08 Jan 2010 Location: South West Posts: 548
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Huh? Just telling what I experienced myself. You don't have to believe me, I don't really care. Just try by yourself.  |
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5th Nov 2012 7:32pm |
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