As with all revup owners, my engine turns into a wild beast during the winter and then a tame kitten during most of the summer. This the first car I've owned where I could unmistakably feel the difference. I can compare my G directly to the detuned VQ in my wife's Maxima - her car feels consistent year round. I understand that hot low density air effects any engine, but it really seems to kill the revup.

Is a Motordyne 5/16th copper in order? That should obviously help but it can't be that simple. I'm imagining a mega radiator, meth injection (I realize that's for FI guys), or something more serious is needed. Any winter climate drivers out there know what I'm talking about and achieved this performance year round?

 

You need to get the MREV2 and the 5/16 or 1/2 spacer from MD. REVUP need both.

 

^or a non-revup lower like i did. sure the mrev2 adds a little more but the non-lower mixed with my 5/16th spacer definately is a great combo.