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Originally Posted by jwick This is on my todo list for the V1.75 upgrade. Bought the plugs to be able to pull them completely! yeah.... i been lazy...
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#1 (permalink) | |
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#2 (permalink) |
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That makes me sad. How am I supposed to pass emissions testing if I have to disable my O2 sensors to get the car to not flip out?
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#3 (permalink) |
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Not sure if this issue is still circulating about the forum. I was having the same issue. Bank 1 and bank 2 were always off by 0.5-0.7. An accidental wipe of my rom file lead me to this series of adjustments which virtually eliminated the disparity.
1) I downloaded a different rom from uprev by accident. I flashed the 2013 370 NISMO file 1A40D instead of the one my ecu was supposed to match:1A39D. 2) I began running all uprev programs as administrator. 3) I edged up my injector latency value at 14V a bit (added 0.3ms). That's it. Like the majority of useful medications on the market, this was a serendipitous discovery. I hope this helps at least one other person. Peace. -JMC |
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#4 (permalink) |
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Reading this thread I am looking also in my engine a little differences between banks: 0.5-0.8 AFR, but only in 1800-3600RPM Full Load area!
In this case, it's better to tune all richer maintaining all Bank1 & Bank2 MAX AFR below 12.7, or I must consider a mid value? ...after 4000RPM everything the AFR was balanced... Some positive feedbacks removing the O2s? Thanks.
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#5 (permalink) | |
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The two banks are pretty close, but in the 3250RPM area, there is a difference ![]() ![]() Two examples: ![]() ![]()
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#7 (permalink) |
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....mmh! I know....
![]() ![]() My question is: If you have an AFR balanced on the entire range, but only around 1800-3600RPM Bank1 differs from bank2.... What do you do? ....disconnecting O2s (The lambda after the cats) is the solution?
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HFC Berk - CAI Stillen GEN3 - Catback Nismo - ECU reflash with UpRev - Clutch South Bend Stage II daily with ZSpeed HD CSC - Setrab Oil Cooler Kit with Mishimoto Thermostatic Plate Gold - PJMu Brake Pads - Oil Pressure Gauge GlowShift - TPMs Hella TC400 - Steering Lock disable switch by me - OBD Link MX with Asus Nexus & Torque App Last edited by flashgordon; 11-09-2016 at 01:23 PM. |
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#8 (permalink) |
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Hmm that is strange.
Here's a silly question, but is your MAF voltages during that area? Wonder if it's possible that the MAF's are reading slightly different from one another? |
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#9 (permalink) | |
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....this weekend I can try to swap the 2 sensors....
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#10 (permalink) |
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Try it and report if the AFR dip changes between the banks.
I would also double check to make sure you don't have any vacuum/air leaks post MAF. I would imagine a vacuum leak on a MAF based system could make things run funny. |
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