Running an LQ4 without o2 and maf?
Running an LQ4 without o2 and maf? I have been looking at my harness lately and can't find the plugs for my O2 sensors and my MAF, is it possible to run these motors with a basic program and not use these sensors?
Thanks
Tom
Thanks
Tom
Staging Lane
Joined: Apr 2009
Posts: 76
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From: Ohio, USA
If I understand GM's open-loop and "limp-home" strategies well enough, you should be able to get by without both, since it should default to the MAP and preset fuel tables, but I dunno why you'd do without oxygen sensors in a system like this? or no MAP without an SD-only tune? I mean I could forsee it it you just wanted to get things started, but...
Hell, you can take a piston out and still make it run, but why would you want to? I ran my LS1 in my '33 without a maf when starting it for the first time, and several times after that, but it fouled the plugs in short order and then wouldn't even run. Just my experience.
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You can run without the MAF and O2s....it's called open loop speed density. If you are confident in your tuning abilities you can make a OLSD car run fine.
Personally, from an engine safety perspective, I would run Closed Loop SD if you are set on running without a MAF.
Personally, from an engine safety perspective, I would run Closed Loop SD if you are set on running without a MAF.
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From: ocala,fl--- forest-ocklawaha
exactly,,, i m running my 5.3 in my chevelle with niether one of them, temperarly.. spark plugs look perfect to me,.. i'll be running wideband.. i recondmend on getting one if ur tuning urself..
I'm not running with a MAF, im using O2s though. Not having a MAF doesnt really matter. Unplug the MAF on your LT1 or LS1 and drive without it, i didnt even lose 1mpg with it unhooked in my LT1.
