For you 5-speeds.. since the max hp on a 5th gen is 6400rpm, and you have to shift soon so you wont bang into the limiter, why not get the jetchip and remove the limiter so you can stay in the higher end of the torque curve/hp curve? (I read in a previous thread jetchips remove the revlimiter and governor.)

 

seems Jetchip claims are... questionable...
http://forums.maxima.org/showthread....&highlight=jet

 

I know, i dont think they gain any hp at all, but removing the rev limiter is pretty nice to me.. you can take advantage of the torque curve without a limiter.