Greater than stock cam, will driving 60 miles to dyno tuner hurt engine?
10-09-2011, 06:32 PM
#1
Greater than stock cam, will driving 60 miles to dyno tuner hurt engine? So I am running in open loop on my LQ4 with LS3 heads and a 222/230 cam (.570 lift). Engine is in 68 Camaro. O2 sensors aren't yet hooked up (exhaust isn't welded up). ECM is loaded with base LS3 program with rear sensors deleted by the guy who took VATS out of my box. Transmission is 4l80e, supposedly the 4l80e segment was added to the ECM. It has the ls3 fuel/ignition tables with all injector settings to go with it.
Right now (obviously) the car stumbles and dies quite often. Idle is about 650 but when I push on the pedal it hesitates very badly until it catches then it goes with all the power of a Honda Civic LX. Sometimes when I push it in gear it dies. I'm sure this is from being in open loop with open headers. It's gone all of 25 mph. We'll see how it does next week when the exhaust is welded in with the o2 sensors hooked up. It isn't throwing any codes outside of 134 and 154 (o2 sensor problem).
I want to drive to west palm beach (about an hour away on the highway) to get the car dyno tuned.
A couple of questions.
1) Will running closed loop with the O2 sensors plugged in for 60+ miles with a stock ls3 tune ruin my engine? Any problems doing this? Better phrased, if I put a 230 cam in a stock 2010 camaro would running it a great distance hurt the engine?
2) My harness has LQ4 o2 sensor pigtails. With the base LS3 program, any problem with running the LQ4 o2 sensors, or are the LS3 sensors necessary? ECM is from a 2003 vehicle. Do the sensors provide different voltages or are they the same between model years?
Right now (obviously) the car stumbles and dies quite often. Idle is about 650 but when I push on the pedal it hesitates very badly until it catches then it goes with all the power of a Honda Civic LX. Sometimes when I push it in gear it dies. I'm sure this is from being in open loop with open headers. It's gone all of 25 mph. We'll see how it does next week when the exhaust is welded in with the o2 sensors hooked up. It isn't throwing any codes outside of 134 and 154 (o2 sensor problem).
I want to drive to west palm beach (about an hour away on the highway) to get the car dyno tuned.
A couple of questions.
1) Will running closed loop with the O2 sensors plugged in for 60+ miles with a stock ls3 tune ruin my engine? Any problems doing this? Better phrased, if I put a 230 cam in a stock 2010 camaro would running it a great distance hurt the engine?
2) My harness has LQ4 o2 sensor pigtails. With the base LS3 program, any problem with running the LQ4 o2 sensors, or are the LS3 sensors necessary? ECM is from a 2003 vehicle. Do the sensors provide different voltages or are they the same between model years?
10-09-2011, 09:05 PM
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I believe the sensors are the same, p.e. as in power enrichement. Depending on the operating system, it will default to open loop WOT mode at as little as 30% throttle input.
