Most ecu's are hard to beat the greddy's and apexi the results that these ecu's have given and nearly every tuner can work them easy there is no need to mess about with the hks one or anything else the problem is there is more parts to it more fiddles you can buy a plug n play loom with up to date piggy backs you can have the car set up perfect in 30 minutes or summit no adding boost and brand new in the box with warranty