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Quite a few places can fit the time the 197 cams correctly. Alex @ AW motorworks in Essex can fit time the 197 cams.
EFI is the worth the distance- travel (432 mile round trip for me) I live near Southampton and had my 172 mapped there.
Somethings not right. I had 197 cams timed up to 7 degrees, and the car ran fine and the idle was good (apart from being lumpy due to the cams) on the long drive up to EFI for mapping.
Not a great deal in it between 197 cams and GrpN timing power wise, but iirc you can’t get a clio to pass emissions test with GrpN timing, whereas you can with 197 cams.
I have 197 cams fitted and mapped at EFI to my 172, and it made another 15bhp.
Mine hasn’t changed a lot, as I tend to keep my cars for a long time (forever)
December 2005 Clio 172 which I still own.
Toyota Hilux purchased July 2009, still own.
Fabia VRS bought December 2010, still own.
BMW M2, 2017, still own.