thanks for all the replies, yes in ni we only have 97, eco max millers was the first one i tryed first at 1 shot then 2 , the more i added the worse it performed, same goes for nf race formula, tryed half bottle first then half bottle on half tank so full dosage, again got worse the more i added, recently replaced a faulty fuel rail pressure sensor so i thought i would try another just incase that was hampering the effect so tryed lucas as full dosage, same result as on the others, i remember fifth gear testing all these products and finding the same results so i guess they were right,
but going from 95 - 97 is the complete reverse you instantly feel the difference so thats full gone clusion for me,
for anyone thats putting these things in your fuel without custom tuning for it i would suggest trying a tank of normal super to see the difference,