NX 150 lean on take off............

[yellow-cat]

Running a 150 shot of NX, and it is running a little lean on take-off. At higher speeds, no problem. Supposed to use a 62 N20 and 38 fuel jets, I already bumped up fuel jet to 42 with the same results. The next fuel jet is a 52, but that seems like it would then be too lean. Anyone have some suggestions?

[SPD DMN]

based on what? Dyno wide band?

Are you purging the nitrous line? Did you use the lines provided in the kit or did you use shorter/longer lines between the selenoids and the nozzle. How is the fuel pressure? Could be spiking the fuel pump and not being able to maintain pressure momentarily.