This sounds like it's worth it alone... If you can run 91 instead of 98 that's a good saving at the pump with each fill... Especially if (like around where I live) there is good competition on 91. Down the road 91 is 2c cheaper than standard price... That makes it 13c cheaper than 98... and with a fuel docket that's 17c cheaper than full price 98, 6c cheaper than full price 91.99gtt wrote:Go and talk to bob homeward he is an agent for fuel star . I asked him about installing it on my caldina which he did not recomend. He has dyno tested it on his own cars . Got no performance gain but allowed him to run the car on 91 unleaded instead of 98 without the engine pinking and gets a little better mileage out of a tank . So it works but it doesnt.
As for this fuel star testing... The method is now a bit iffy...
It would have been better to have a dyno run from right before the fuel star was fitted, and then one straight after, and another after a few hundred kays driving...
But... 5% is often considered the statistical threshold, anything less than that can't be considered a reliable result, but can be considered indicative.