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WydRyd WydRyd is offline
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Join Date: Mar 2002
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I don't have a CIS based car, so I can't really help much, but if the engine performs fine without the O2 sensor, then why not just leave it disconnected? Are you reconnecting it for the smog test police?

On my Motronic based motor, I left the O2 sensor disconnected as I found the car performs better without an O2 sensor. Albeit, a bit richer at idle and part throttle, but certainly performs better. With the O2 sesnor in, the ECU makes the idle/part throttle mixture leaner, for better economy and emmissions. I prefer it on the richer side, even if it means fuel economy suffers a bit.
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 03-29-2007, 07:32 PM
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