i've seen SR's in action but never ridden in one. i did ride in a KA-T though! at only 3.5 psi <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/sad.gif" border="0" valign="absmiddle" alt='
'> boost leak, and he didn't buy the colder plugs before the meet so he had to use some from the local autoparts store.