never used it was going to buy it for my capri car. but me and my buddy deiced to go with a sds kit from a place in Canada. roughly 1k tho. the good thing about it is no more emmissions no more van. you tell them all the specs of you motor ect and they give you a rough tune all plug and play. and when we get the second motor finshed volvo head swap we can send the ecu back to them and get another rough tune for use with that head ect. no pc needed to tune it. the main reason of the we didnt go with the ms unit is because you have to make it you self maake your own harness