Here you go guys, just copied this accross from another post here and yes they do work, well on mine at least.... Mine is a 1993 Discovery fitted with the 3.5i V8, auto box and has a Blaster2 coil. I did the math very much spot on and when you look at the kms covered it did return me way better than without it. No doubt I will have some loss when the supercharger goes on in a few days but hey, not fussed about the MPG at all, just the grunt!!! Enjoy
QUOTE:
Well guys, it came last saturday and here are the results from this weeks general running, I have covered 1,840kms this week:
Time to fit, 5 mins.
Cost, $25.00 inc freight ($36.00 NZD)
MPG prior fitting, 18mpg (UK Gal) on freeway/motorway.
MPG after fitting unit, 24mpg (UK Gal) on freeway/motorway.
MPG towing 2.1 tons inc trailer prior to fitting unit, 14.6mpg (UK Gal)
MPG towing 2.1 tons inc trailer after fitting, 18.9mpg (UK Gal)
So hey, it works not too sure re the extra 16% power it is said to give but it runs very smooth now. I recon 16% is so small its just not worth counting!!! No more issues with the idle too so that makes me smile big time. Just a wait now for the electric supercharger to arrive and see if that make a diff