they do get hot, we have small radiators. Anyone know the size of paper cone filter that fits right onto the maf? I want to get a cheap cone filter to put on my sri so i can still drive the msp while i am cleaning and drying my foam air filter. BTW would a dirty air filter lead to less than optimal performance? (slow building boost, and just not running as good?) I havent cleaned it since september or maybe earlier like last summer.