Quote: Originally Posted by
wonderboy 
Ideally, you would do this on a dyno or at a track.
Videotape, or get a friend to videotape your gauges while you do a 3rd gear run. (Just be safe and do it on an isolated flat stretch of road.)
I have the aem wideband, the boost gauge and the scangauge (reading knock and timing advance)
Play it back at home and document the gauge readings.
great idea!!! gonna do that this weekend!!