Subject	O2 Corection is a Secret!
Posted by	Cjw3 on August 20, 2013 at 4:37 PM
	This message has been viewed 219 times.
In Reply To	or is it cause the o2's will sense rich and lean it out posted by inf on August 20, 2013 at 01:51 PM
Message	The ECU forum for 300ZX ECU tuning talks BRIEFLY about how the O2 Correction Works.. but only mentions that all the information the poster had was confidential.. and he could not post about it.. ( Thanks.. ) The ECU's I'm familiar with can only do a 30% Correction.. your machine was programmed for 370's and has some 500's in it.. LIKELY the ECU will not be able to pull enough fuel to lean out the 500's.. but it will pull fuel on the 370.. so it will run lean at cruse.. Idle is a different animal.. the 300 ECU does not use O2 Sensor correction for Idle.. so the 500's will be running rich, and the 370 will be running proper.. LIKELY that is why the idle is so good.. you do not have a lean cylinder.. just rich ones.. Still hunting for a way to get O2 Sensor correction at Idle.. Cj
Follow Ups	What would the dangers/results be if a stg 3 TT had a 370cc - inf 12:58:06 08/20/13 i assume it'd run rich? (n/m) - inf 13:00:56 08/20/13 DON't DO IT! - Cjw3 13:14:20 08/20/13 gotcha... - inf 13:47:36 08/20/13 or is it cause the o2's will sense rich and lean it out - inf 13:51:06 08/20/13 Yes. - -Grimm- 14:26:09 08/20/13 O2 Corection is a Secret! - Cjw3 16:37:50 08/20/13 Wtf...smoked was coming out the exhaust which is expected - inf 18:28:06 08/20/13 no pinch found... (n/m) - inf 19:08:42 08/20/13 Hmmm... - inf 20:42:06 08/20/13 and a few more follow up questions... - inf 20:50:01 08/20/13 lastly, boost was 1 bar and duty cycle around 80% (n/m) - inf 21:02:24 08/20/13 What would cause the vehicle to smoke right after installing - inf 21:11:26 08/20/13 Fubared - Cjw3 21:11:57 08/20/13 oh right, the exhaust valve...for some reason I was thinking - inf 22:38:11 08/20/13 oh actually...what made me think it was the rings - inf 23:28:30 08/20/13 I technically didn't shoot myself in the foot though. - inf 22:39:01 08/20/13 I purchased an Injector Test Bench. - Cjw3 07:10:59 08/21/13 I was contemplating a Launch Diagon, or whatever it's called - inf 12:03:16 08/21/13 that's interesting though... - inf 22:41:18 08/20/13 what confuses me is how it smoked literally the same - inf 22:53:01 08/20/13
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