honestly, thats nothing for kr really. id live with it. unless you want to play tuner and pull those little blips out, by either adding more fuel or taking a degree of timing out in the cells with the blips of kr. to do that your eyes will bleed reading up on how to tune.

a avt box for dhp runs about 250. after that its free to use, no credits to buy. hp will run you in the 500 range.