Remap and MPG

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D9406
2.2 16v
Posts: 211
Joined: Wed Feb 02, 2011 2:12 pm
Location: IO81XW

Remap and MPG

Post by D9406 »

A family member has just, two weeks ago, had his 406 90Hdi remapped, completely transformed the car. Does anybody know if the MFD still display a 'true' MPG figure or does the remap distort it due to the longer injector opening time? It is showing an average of 35 mpg at present, though this could be due to the heavy right foot that has developed, dating from the remap date coincedentally.
1999 406 HDi 2.0 110 GTX Estate. 48k when bought, now 150K. Second owner, I've covered over 100k in it.
Clutch changed @110k, bottom pulley changed, cam belt changed, EGR blanked, cat removed, front springs changed.
madmadmax
2.0 Turbo
Posts: 484
Joined: Sun Jan 01, 2012 5:49 pm
Location: sheffield, south yourkshire

Re: Remap and MPG

Post by madmadmax »

thay can very so you will have to test it with a tank to tank
nutski
2.0 Turbo
Posts: 417
Joined: Sat Jul 28, 2007 10:43 am
Location: Norwich

Re: Remap and MPG

Post by nutski »

On my remapped 2.2's the figures are within 1 mpg variance, but this does vary from car to car
1997 2.1 TD Exec (Sold)
1997 3.0 V6 Coupe S (Sold)
2001 406 HDi 110 GTX (Sold)
2002 406 Coupe HDi SE (RIP)
2003 406 Estate HDi 2.2 SE (Sold)
2003 406 Coupe HDi SE (To be sold)
2001 406 Coupe 3.0 V6 SE
2003 406 2.2 HDi SE
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Doggy
Mod with a 2.2 HDi, De-Fapped!
Posts: 10710
Joined: Mon Oct 13, 2008 11:49 pm
Location: Northants

Re: Remap and MPG

Post by Doggy »

Both of my remapped 2.2's have been about spot on.

Those 'tuning boxes' that fool the ecu into running excessive fuel pressure do screw up the mpg calcs, though.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
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OdinEidolon
3.0 24v
Posts: 1166
Joined: Wed Apr 13, 2011 5:24 pm
Location: Belluno, Italy

Re: Remap and MPG

Post by OdinEidolon »

Waht nutski and doggy said! :arrowu: :cheesy:
2001 2.2HDi saloon Executive (not the English exec, worse!) in Obsidian Black. Semi-Mux D9, build code 8761
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