SSNISTR
10-03-2006, 11:09 PM
My speedo is reading about half of what it should, and my tach is about 1000 rpm off (I know this because my Autometer tach works fine). Does anyone have any reasons why this might be? This happened soon after my cam install. All grounds seem to be good, as does the cluster and PCM and BCM. Any ideas? Car is getting tuned in 2 weeks, worse comes to worse I can ask at the shop but it's bugging me. Any help would be great guys.