Tunit VCR- on 2.4 Puma

Hi

Has anyone fitted a Tunit VCR - on a 2.4 Puma engine?

Just bought one on ebay - because it was there!

What I am hoping for is increased MPG dont need any more torque!
I drive long distances across Europe and want economy at cruise speed in 6th.

Any tips on the manaul setting

Thanks

norbut mines is a sony vcr.ah just plugged it in and it worked