Quote:
Originally Posted by Unclemeaty
Megan; yours and my Ignition timing maps are similar. I imagine since you have some mods you were able to get ~71 tuned in at higher rpm. In stock form, I was pinging at 70 so I lowered it to 68. Other than that our numbers are pretty close. Did you try tracing the timing through a gear to see if it steps left as I mentioned in my previous post? -Might be pinging. Yes, the RadioShack Mini-Amp might warn you of ping also..
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last summer when I only had my modded exhaust and stock intake system.
I was tuned to 75
but few month ago I decided to do a test and my timing was the same with 70-71
so I lowered it
thats give me about 29-30 BTDC from 7000-7500 RPM
again , that depend on what the AFR is reading,
a drop or higher than .2 AFR will give a different timing value during a run.
its like to be in a sweet spot , if you get out , the bonus in timing is ruined by the wrong AFR
I did do some tracing on the timing map but I never think about what you seem to have found out in your previous post.
in the future I will look at it.
because I always tuned by the way the knock sensor feel, if its pull timing , I do some modification in the map to make the knock sensor happy.
Quote:
Originally Posted by Unclemeaty
Interesting read about the stock WB vs your aftermarket sensor. You know you can adjust the WB AF vs Voltage rating in Cipher under Options. You'll notice the data supplied by UpRev is not linear. Since you have a 3rd party AF meter you might as well go ahead and calibrate the stock WB in Cipher..
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I thought about that but I didn't want to screw up something.
Quote:
Originally Posted by Unclemeaty
Very interesting about the injector trim. How do you figure out which injector needed more, and which needed less? Reading spark plugs is all I can think to do. Perhaps using a heat gun on the exhaust manifold could be another test. ~1% is substantial.
I have not played much with the MAF tables. I'll have to do my homework before I do though. From your first post I guess this is more necessary especially since you've changed your MAF, TBs and done some other mods. Are you really hitting 22-23 base scheduled fuel with your mods? Mine is only hitting ~20.5 stock.
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I just did an average from B1 to B2 and modified the whole B2
cylinder 1 is higher but I should set it to the 3 or 5 because they are the one receiving more air than the front one.
before any change , B2 was richer
after the change B1 was just a tiny bit leaner , this is why I only gave 1 cylinder to be richer
I'm trying to have both bank having the same fuel/air doing a data log with the MAF V. and WB
to answer your last question ,
yes I do get in the 22 ,, my max was 22.7
I would guess to be touching the 23 once I install back my modded Throttle Body.