open loop
01-27-2004, 02:02 AM
#3
0.5 BAR
Thread Starter
Join Date: May 2003
Posts: 127
Re:open loop
You shure it's only triggered by TPS?
I ask because when on freeways, I usually drive ~100-110mph, and that's now with like 1/3 throttle... so wondering if staying in closed loop will cause me to run more stoich A/F ratio -> coudl that damage engine?
I ask because when on freeways, I usually drive ~100-110mph, and that's now with like 1/3 throttle... so wondering if staying in closed loop will cause me to run more stoich A/F ratio -> coudl that damage engine?
01-27-2004, 10:52 AM
#4
3.0 BAR
Join Date: Apr 2003
Posts: 2,260
Re:open loop
Well, it's all about air (pressure) vs fuel, not speed when determining A/F ratio and being "safe".
I can drive about 110 (entirely too fast mind you :P ) and still maintain 10inHg at 12% throttle.. Which is still closed loop. All the while having a bouncing A/F (indicating ECU correction, I.E. closed loop). So you should be safe.
OBD0 is based on TPS. I don't have much experience with OBD1 or 2. They could factor in engine load, I guess. I do know, however, that TPS is a main, if not the, deciding factor.
I can drive about 110 (entirely too fast mind you :P ) and still maintain 10inHg at 12% throttle.. Which is still closed loop. All the while having a bouncing A/F (indicating ECU correction, I.E. closed loop). So you should be safe.
OBD0 is based on TPS. I don't have much experience with OBD1 or 2. They could factor in engine load, I guess. I do know, however, that TPS is a main, if not the, deciding factor.
01-27-2004, 04:28 PM
#6
0.5 BAR
Thread Starter
Join Date: May 2003
Posts: 127
Re:open loop
Originally Posted by TurboEF9
Well, it's all about air (pressure) vs fuel, not speed when determining A/F ratio and being "safe".
I can drive about 110 (entirely too fast mind you :P ) and still maintain 10inHg at 12% throttle.. Which is still closed loop. All the while having a bouncing A/F (indicating ECU correction, I.E. closed loop). So you should be safe.
OBD0 is based on TPS. I don't have much experience with OBD1 or 2. They could factor in engine load, I guess. I do know, however, that TPS is a main, if not the, deciding factor.
I can drive about 110 (entirely too fast mind you :P ) and still maintain 10inHg at 12% throttle.. Which is still closed loop. All the while having a bouncing A/F (indicating ECU correction, I.E. closed loop). So you should be safe.
OBD0 is based on TPS. I don't have much experience with OBD1 or 2. They could factor in engine load, I guess. I do know, however, that TPS is a main, if not the, deciding factor.
Mind that... I usually cruise at 100mph.. so 110 aint that fast
.. as some might wonder what about cops? Well... mostly they use laser guns to read speed.. and that's where laser jammer does it's magic.. even when pulled over, I never ever paid more than 30US$ (well, our currency converted to US$), as I was always able to bribe 'em.. at least there is something good living here
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