I got a '02 450es that is stock except the hmf penland pipe, k&n with the outerwears prefilter. I got the dyno jet kit I have been trying to get tuned in. I have a air/fuel meter I have been using. I just cant get it to have a good steady reading. How much should it change on the meter? It jumps around worse than before the kit was installed. I would greatly appreciate any help with this.