dont go for greys they are old hat. im running light blues on a 400 bhp engine mapped by ahmed 6 years ago works perfect better fuel consumption than greys and no need for closed loop {more expense}. how much are the light blues going for as mine are for sale at the right price so is the chip and pectel board and 3 bar. i know my injecters are spot on as they have been cleaned and tested 3 times in 6 years