Mine's running a polestar remap & yes it makes a difference esp on an auto in sport mode.
Yes the increase isn't much but the driveability of the car is much better. Not noticed any drop in economy in fact in some situations I would hazard a guess to say it's improved a touch.
It's expensive but I did get mine on offer when I purchased the car which was been sold to me with Volvo warranty etc. so wanted to preserve this
On an older car yes maybe Rica or BSR will give you more bang for your buck.
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Current 2015 XC60 D5 AWD - Caspian Blue
Previous 2012 XC60 D5 AWD - Seashell Metallic
Previous 2005 S60 D5 Geartronic - Gunmetal
Previous 2001 C70 T5 GT Auto Convertible - Saffron
Previous 1999 S40 XS - Silver
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