[OrbitalEllipses]

Originally Posted by roddy

I'll back this statement up. I'm running a roots (4th gen Eaton MP-90) on a 4.0 in an '07 Mustang, non-intercooled @10+ PSI. I have pretty much the same observations as above... power drops somewhat in the heat, but no damage done. If the tune is properly set up, as temperatures rise, timing is pulled to prevent detonation.

As stated above, twin screws create less heat. That combined with lower PSI, makes it a non-issue in my mind. Frequent track users may still want to opt for the intercooler though.

I'd assume the already high compression nature of this engine makes running without an intercooler that much less desirable. Sounds like knock city.