Xterra 005.jpg 7505 hits | 73.91 KB | Posted: 9/29/06 The knock sensor I believe. When the lower intake is in place this will be pretty much inaccessable.
Xterra 006.jpg 7874 hits | 70.45 KB | Posted: 9/29/06 The crankshaft position sensor. Right behind the driverside cylinders.