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N2O ATap Results. Problem?

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Old Apr 2, 2002 | 10:18 PM
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Default N2O ATap Results. Problem?

I have been tweaking my NA MAFT setting and got it pretty closeBase @ 0 and WOT @ 2% lean)

LTFT B1/B2 avg. (cells 1-19) = -1.17
O2 B1/B2S1 avg. (WOT) = .910
Timing avg @ WOT = 24.8
KR = 0

I felt pretty good about these results, so I opened up the bottle and got the following:

LTFT B1/B2 avg. (cells 1-19) = -1.08
O2 B1/B2S1 avg. (WOT) = .858
Timing avg @ WOT = 24.6
KR = 3.8 (one occurrance at WOT)

As a note here, lower O2 reading were at initial WOT (.79 -.82) and then rose to .86 - .89 on balance of readings @ WOT. Also, the timing dropped to 20 on the occurrance of KR.

First of all I feel pretty good about my pre-MAFT condition with running a little rich vs. the lean condition I fully expected using the GMAF. Should I be concerned about the N20 results? I really like the NA tuning, but don't want any problems on the juice.
<img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Thanks in advance for any input and suggestions.
Randy Hughes
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Old Apr 2, 2002 | 10:27 PM
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Default Re: N2O ATap Results. Problem?

One thing I forgot to ask....where should my timing be at NA and NOS? I still have a timing "tricker" I took off because I read that increased timing is a no-no on the juice. Should I try it? One more thing...what do you use the STFT readings for?
Thanks again..Randy
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Old Apr 2, 2002 | 11:16 PM
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Default Re: N2O ATap Results. Problem?

i can answer one thing.. i just dont like those .85's for n20.. thats sorta on the lean side for spray.. i likem in the .90-93's on spray and .88-.89 NA
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Old Apr 3, 2002 | 12:35 AM
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Default Re: N2O ATap Results. Problem?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BLUEBYU:
<strong>I have been tweaking my NA MAFT setting and got it pretty closeBase @ 0 and WOT @ 2% lean)

LTFT B1/B2 avg. (cells 1-19) = -1.17
O2 B1/B2S1 avg. (WOT) = .910
Timing avg @ WOT = 24.8
KR = 0

I felt pretty good about these results, so I opened up the bottle and got the following:

LTFT B1/B2 avg. (cells 1-19) = -1.08
O2 B1/B2S1 avg. (WOT) = .858
Timing avg @ WOT = 24.6
KR = 3.8 (one occurrance at WOT)

As a note here, lower O2 reading were at initial WOT (.79 -.82) and then rose to .86 - .89 on balance of readings @ WOT. Also, the timing dropped to 20 on the occurrance of KR.

First of all I feel pretty good about my pre-MAFT condition with running a little rich vs. the lean condition I fully expected using the GMAF. Should I be concerned about the N20 results? I really like the NA tuning, but don't want any problems on the juice.
<img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Thanks in advance for any input and suggestions.
Randy Hughes</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Is this a wet kit? If so, just increase your fuel jet. 0.85 is getting pretty risky, but then again, you really need to use a WB O2 sensor to know for sure. But the fact that you knocked at least once doesn't sound good and I'd try to richen it up a bit. Or use higher octane gas. 24 degrees sounds okay to me.
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Old Apr 3, 2002 | 09:54 PM
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Default Re: N2O ATap Results. Problem?

I was having the same problem with my setup.Get the NA where you want it and when you spray it would be too lean.I finally settled on a little richer NA to even the N2O.
A wideband would help out alot for the settings.
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