I wouldnt put 97 in but thats just me
i had 3 maps with ECUTEK on my fi 370 and will do again
i had 98,97,and a 95 for just incase but the 95 was limited i think to stop me blowing it
even if i had mixed tank of 98,97 id run my 97 map for saftey
tesco at 99 sounds great but my pals evo with its stroker in hates the stuff loves the v power tho