I want to change my helix out to another stock one and see if it has any effect on my rpm problem. I changed out the stock spring to another stock spring but had the same results with low rpm and hearing it shift out at around 45-50 mph. So this makes me think its not all in the secondary spring and must have some other secondary problem that's makin some of these mav's do this. Also it would be nice to try a helix that came off a mav that's hitting 8000 all the time. Also I did put the airdam spring in and was hitting rpm but now not so much.. Even with the airdam spring from new I was able to hear it shift out at 45-50 mph a little but not as bad as the stocker..