doccrowley Posted December 25, 2012 Share Posted December 25, 2012 Just switched back to 91oct tune from e85 tune as the local pump is down for a month with tank repairs. How does my learning view look to you after 100 miles? I appreciate all the help. I am most concerned about the a/f learning of negative 13.30, -13.30 and -14.00 CAL ID:A2WF200C Description: 06 USDM Legacy GT AT ECU ID:xxxxxx3106 IAM 1.0000 A/F Learning #1: 0 - <5.60 5.60 - <10.00 10.00 - <95.00 95.00+ -13.30 -13.30 -14.00 0.00 FLKC Table 0 - <0.85 0.85 - <1.10 1.10 - <1.35 1.35 - <1.60 1.60+ 0 - <1650 0.00 0.00 0.00 0.00 0.00 1650 - <2600 0.00 0.00 0.00 0.00 0.00 2600 - <3200 -1.00 0.00 0.00 0.00 0.00 3200 - <4000 0.00 0.00 0.00 0.00 -0.15 4000 - <4800 -0.50 0.00 0.00 0.00 0.00 4800 - <5800 0.00 0.00 0.00 0.00 0.00 5800+ 0.00 0.00 0.00 0.00 0.00 Link to comment Share on other sites More sharing options...
ripemeat Posted December 26, 2012 Share Posted December 26, 2012 did you switch maps too? or just fuel? if you did switch maps- it looks good except for the injectors that aren't tuned for. those trims look just like what would happen if you put big injectors in and didn't touch the tune. if you didn't switch maps- you're not knocking enough to start to worry. but then again, if it's the same map as e85 and you're barely knocking on 91, one would think the tuner did not reap the benefits of e85 in terms of timing advance, which would be a shame. Link to comment Share on other sites More sharing options...
doccrowley Posted December 26, 2012 Author Share Posted December 26, 2012 Swapped tunes w fuel change. Tuner says I must have an air leak, but e tune was great before the switch and LV before tune switch was clear. Link to comment Share on other sites More sharing options...
ripemeat Posted December 26, 2012 Share Posted December 26, 2012 air leaks usually aren't consistent(almost identical) along all the closed loop the fuel trim ranges, larger injectors do. what you can do is look in both of the maps and see if the injector latency's and scalar are the same on both maps, as well as the maf scale. Link to comment Share on other sites More sharing options...
m sprank Posted December 27, 2012 Share Posted December 27, 2012 either something is up with the tune, you have some odd mix of fuel still, or you sprung a good leak. Link to comment Share on other sites More sharing options...
doccrowley Posted December 27, 2012 Author Share Posted December 27, 2012 Update: Tuner called it It was an air leak. Visual inspection showed the T-clamp from TMIC to throttle body hose wasn't tightened when the motor was done 1,100 miles ago.... So short drive showed this: CAL ID:A2WF200C Description: 06 USDM Legacy GT AT ECU ID:4512503106 IAM 0.8750 A/F Learning #1: 0 - <5.60 5.60 - <10.00 10.00 - <95.00 95.00+ -15.00 -0.10 -2.60 0.00 FLKC Table 0 - <0.85 0.85 - <1.10 1.10 - <1.35 1.35 - <1.60 1.60+ 0 - <1650 0.00 0.00 0.00 0.00 0.00 1650 - <2600 -1.00 0.00 0.00 0.00 0.00 2600 - <3200 0.00 0.00 0.00 0.00 0.00 3200 - <4000 0.00 0.00 0.00 -0.50 0.00 4000 - <4800 0.00 0.00 0.00 0.00 0.00 4800 - <5800 0.00 0.00 0.00 0.00 0.00 5800+ 0.00 0.00 0.00 0.00 0.00 Then tuner asked about voltage drop at idle due to dying alternator or battery..... Looks like my Braille 11lb battery is not liking winter. Time for a real winter battery. Thanks for the help everybody. Link to comment Share on other sites More sharing options...
m sprank Posted December 27, 2012 Share Posted December 27, 2012 Glad you got it all sorted out. Link to comment Share on other sites More sharing options...
iNVAR Posted December 27, 2012 Share Posted December 27, 2012 I'm assuming you reset your ECU after having that clamp fixed? Because your IAM is at 0.8750 and you're still pulling timing, and your A trim is still -15. Link to comment Share on other sites More sharing options...
ripemeat Posted December 27, 2012 Share Posted December 27, 2012 idle battery voltage effects injector pulse widths, that's what he was referring to with his superduper lightweight battery Link to comment Share on other sites More sharing options...
iNVAR Posted December 27, 2012 Share Posted December 27, 2012 Oh, I see I see... Link to comment Share on other sites More sharing options...
doccrowley Posted December 28, 2012 Author Share Posted December 28, 2012 So, Interstate Mega Tron battery shows 13.6v at idle now rather than the 11.2 that my Braille was showing. Simple test drive around neighborhood, 2nd gear light driving reveals: CAL ID:A2WF200C Description: 06 USDM Legacy GT AT ECU ID:4512503106 IAM 1.0000 A/F Learning #1: 0 - <5.60 5.60 - <10.00 10.00 - <95.00 95.00+ -4.00 -0.30 -0.30 0.00 FLKC Table 0 - <0.85 0.85 - <1.10 1.10 - <1.35 1.35 - <1.60 1.60+ 0 - <1650 0.00 0.00 0.00 0.00 0.00 1650 - <2600 0.00 0.00 0.00 0.00 0.00 2600 - <3200 0.00 0.00 0.00 0.00 0.00 3200 - <4000 0.00 0.00 0.00 0.00 0.00 4000 - <4800 0.00 0.00 0.00 0.00 0.00 4800 - <5800 0.00 0.00 0.00 0.00 0.00 5800+ 0.00 0.00 0.00 0.00 0.00 Link to comment Share on other sites More sharing options...
m sprank Posted December 28, 2012 Share Posted December 28, 2012 Low voltage causes all sorts of issues. You can even brick an ECM with low voltage. Link to comment Share on other sites More sharing options...
ripemeat Posted December 28, 2012 Share Posted December 28, 2012 Low voltage causes all sorts of issues. You can even brick an ECM with low voltage. I know flashing with low voltage can result in bricks, but what other ways? Link to comment Share on other sites More sharing options...
m sprank Posted December 29, 2012 Share Posted December 29, 2012 Driving with low voltage can cause it. Any low voltage situation can cause the electronics to go bad. I have seen an LGT with a bad alternator brick the ECM driving. Died driving down the road. Link to comment Share on other sites More sharing options...
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