So i have some heatwrap laying around and with the new RX-8 i bought it came with a AEM cold air. I was wondering if putting a heatwrap on the section thats in the engine bay would make a temp difference of the air that inside the tube. I would think it would just make a slight difference in the temp not anything noticeable. What do you guys think.

Not anything noticeable. The air doesn't stay in the intake very long, at least in my '8. ;)

I have my battery box and intake box removed for air to flow more easily through the engine bay, I heatwrapped my intake a while back. All I know is my strut bar gets pretty danmn hot but if you move over the heat wrap, the intake piping is less effected.

If heat wrap can keep heat in, it can also prevent the piping from reaching as high a peak heat aka keep it out (or so my potentially flawd logic tells me). I'll take a pic, I call it "mummy spec" I figured it couldn't hurt, even if it doesn't have any noticeable effect...