07-08-2014, 10:57 AM
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#1 (permalink)
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Base Member
Join Date: Dec 2013
Location: Costa Mesa, California
Posts: 216
Drives: 2009 370Z
Rep Power: 22
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Quote:
Originally Posted by mikey1600
where should we be aiming for AFR wise? I would have thought tune would have been super clean, they are a pro uprev dealer. I see my peak number flatten out and the AFR come from around 11.7-11.8 to 13. there is a lot of unburnt fuel I think it could go a little leaner.. I know safe is good but kind of looks to be quite rich.
also what sort of timing should we roughly be looking at? I can ask what it's at or any graphs of it, forgot to ask about it. Any help would be appreciative and I can point them in the right direction and we can do some testing to make sure there's no detonation.
It's currently middle of winter here, so out and about most places where I am, gets down to 0ish-10degrees celcius while nighttime, would you also advise a sort of summer tune? pull back some of the timing during the hotter weather?
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You'd have to look at timing tables to see all that. Nissan is really confusing as the timing tables aren't in degree but some kind of unit based off cylinder pressure.
It doesn't look like it is running super rich, but it could be smoothed out a little and optomized. Right around 12-12.5:1 AFR is going to be your target range (closer to 12:1 to be safe).
As far as a summer tune...the tune should be able to compensate for the temperature differences but I would have it checked when it gets warmer to make sure everything is good to go.
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