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Originally Posted by saand
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Thanks saand, I'll look into that thread.
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The concept is definitely a good idea, the ECU configuration and design for the whole car is set up for the worst case conditions
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Volvo used this concept on their DrivE-models fitted with the same engine - apart from the usual ecomods (LRR tyres, lowering, wind deflectors), they also have a remapped ECU that makes them use less fuel.
Actually, these eco-versions also have a better driveability than the original version of the car that I have
Their official FE went from 5 L/100km on my car to 4.5 L/100km on the first DrivE version, then to 3.9 L/100km (with a start/stop function) - that's a 22% change !
If anyone got that sort of FE improvement just from applying the usual ecomods and switching off the engine more often, I think they'd be very happy
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Unfortunately the implementation can be difficult.
From what I have read you can usually change out the eeprom or connect up a daughter board which will override settings
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The upgrade I'm looking at is fully reversible, and is done over the OBD2 port.
In a worst-case scenario, I could have the Volvo dealership overwrite the upgraded software.
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If your getting a chip tuning place to do the work for you there is the disadvantage of you might not understand what they are tuning out
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I doubt I'll ever understand exactly what they're doing
But these E-Power remaps are specificly meant to improve FE, not so much the output power (though their is a slight power and torque gain at low RPM)
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If you have a bit of a search on google you will find some chip tuning web sites and instructions which might help.
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Most of what's out there, is about pure power upgrades, with better FE claimed as a by-product. I don't care about the extra power.
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As for my solution I will just be "fooling" the ECU by either overriding its outputs or changing its inputs so it does what I want.
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That's the sort of upgrade I'd not do - but it may be the only option for your car.
That way you're fooling the logic in your car into thinking some parameter is different from what it actually is.