I forget just where I was getting shocked. I 'm sure you'll find out
for install/remove, be gentle. it doesn't need to be torqued down. just seat it lightly and go to town. be very sure your idles jets are absolutely clean first. on each cylinder I adjust idle mixture, pull the idle jet and blow it out, look thru it, re-install and re-check with the gunson. a bit of transient schmootch in the jet can really throw you off. I wound up using around mirror on a telescoping rod to look. much easier to get the angle than the attached one.