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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 700
Originally Posted by boosted 89 View Post
if I rev it up to 2000 rpm the co% climbs up over 3.0% and afr goes to 13.4 ish
Mine does the same thing with the O2 sensor unplugged, you need the O2 sensor plugged in to allow lambda system to control the mixture.

Set the idle CO to 0.4-0.8, set the idle speed, reset the CO to 0.4-0.8, then install and plug in the O2 sensor.

When I do this with mine, all my values are about 1/2 to 1/3 of the local limits. I don't have my test printout with me, but our limits are pretty close the California levels, so that's not bad, especially since I have C2 cams.

BTW, if the O2 sensor has been unplugged for quite awhile, it could be toast. I have a dummy (bad sensor) I run between tests just to plug the hole, and save the good sensor for test day.
1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 04-21-2010, 01:32 PM
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