Autotap readings. Good or Bad? I took these readings: Run 1 B1S1=.875 B1S2=.905 B2S1=.845 B2S2=.905 KR=3.6 Deg Timing=13 Degrees Run 2 B1S1=.815 B1S2=.820 B2S1=.740 B2S2=.870 KR=4.0 Deg Timing=12.5 Degrees Trans oil Temp=156 MAf Air flow Rate=45.37lb/min Run 3 B1S1=.915 B1S2=.930 B2S1=.790 B2S2=.950 KR=1.8 Deg Timing=15 Degrees Trans oil Temp=169 MAf Air flow Rate=40.53lb/min These readings were takin with the wrong plugs NKG-TR55 and a very loose plug. I just changed to the correct plugs NGK-TR6. I have not done anymore readings as of yet. Could the loose plug cause KR? They look pretty wackey to me? Thanks Jason [ February 06, 2002: Message edited by: superchargedZ ]</p> |
Re: Autotap readings. Good or Bad? uhm I agree it looks lean based on guessing off the o2's but I assume by your handle you have a blower on the car? If so you certainly don't want 25 degrees of advance. they probably set you up with 16-17 of advance and once you lose the KR I bet thats what you see. changing the plugs is a good thing but you need to get on a wideband and see how lean you are and then fatten it up accordingly. |
Re: Autotap readings. Good or Bad? No need to log B1S2 or B2S2 either. These are your rear O2's. |
Re: Autotap readings. Good or Bad? MAf Air flow Rate=40.53lb/min at what fuel trim cell(s) ? I'd think at WOT it should be more like 27 lbs and reason you have that amount of knock retard but I would have to see a long trace to pin down what the issue is. Whats the boost ? I helped a C5 owner who was running 7 PSI and after good tuning it is now pushing close to 575 HP. Timing is way too low. |
Re: Autotap readings. Good or Bad? I just found out my Maf Translator was bad. I was on my way to Morgan Motorsports when that happened.(See my other post) They are doing some custom tuning to fix my problem's. Hopefulley it will run lke it should. Thanks Jason |
Re: Autotap readings. Good or Bad? Not under all cases, S2s are important for cold start and PCM in its fuel math uses 25% to what S2s report. I had a cold misfire issue and just recorded all 4 O2s to find B2S2 going bad, effecting cold idle, which caused misfire due to uneven idle, which CPS took as misfire. [quote]Originally posted by Jax White TA: <strong>No need to log B1S2 or B2S2 either. These are your rear O2's.</strong><hr></blockquote> |
Re: Autotap readings. Good or Bad? Very bad. Your O2's are indicating you are running to lean, preferably you should have 0 KR and your timing is very low - should be at least 25 degrees or more. Check all the plugs, plug wires, and the plug gaps then autotap again. Also are you running a stock PCM or has it been programmed? I didn't see your mods but your named is "superchargedZ" so I was wondering what your exact combo is. Anyways there is alot more power to be had judging by those readings. [ February 06, 2002: Message edited by: Godspeed ]</p> |
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