Closed loop with smog delete

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Jan 22, 2007 | 08:36 PM
  #1  
Was unsure if I should post this in ECM or DIY, but was wondering if there is a way to get the stock ECM to run closed loop without burning? Deleted the smog to make room for the turbo and didn't know if there is a way to possibly short, resist, send signal to the ECM via the smog pump wires.

I guess what I want to know is what signal is being sent from the smog to ECM to cause a closed loop condition?
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Jan 22, 2007 | 11:37 PM
  #2  
the ECM doesn't look for the AIR injection solenoids.
removing the AIR pump shouldn't affect closed loop as long as you capped the AIR injection fittings.
you may run a little rich or lean during the time the ECM thinks air is being injected into the exhaust manifolds during cold operation.

closed loop is mainly controlled by a timer which is set in the chip, engine temp, & the O2 sensor. sometimes idle or vehicle speed has an effect on closed loop, if im wrong on this for your car, im sure someone will point it out.
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Jan 23, 2007 | 07:28 AM
  #3  
That's the answer I was looking for! You confirmed my suspisions, just seems like everyone who talks about their car with the smog delete says "I'm in stuck in open loop".
Thanx DENN_SHAH
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