350z UTEC comments from TurboXS
04-19-2007, 10:09 AM
#121
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Originally Posted by cersoft
So this brings me to my biggest point of contention with trying to tune the 0% column, say you pick a number -18 for example, if this is too lean then the ECU will auto add in more fuel and so it'll seem like this is a good number. The same will happen if the number that you pick is too rich, the ecu will scale back the fueliing ...
One thing I've noticed is that when I am driving along under light load conditions and I let off the throttle completely, the AF will swing back to about 12.8 and then swing back up because of being a free air condition. So, my question is, what should the AF do once you let off the throttle completely ???
Colin
One thing I've noticed is that when I am driving along under light load conditions and I let off the throttle completely, the AF will swing back to about 12.8 and then swing back up because of being a free air condition. So, my question is, what should the AF do once you let off the throttle completely ???
Colin
04-19-2007, 10:25 AM
#122
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But the funny thing is my AFR at idle is around 13.8 all time.. No matter what I do to change it, it won't change a bit.. Should I change my Open TPS Treshold value to 0?? So Utec controls the ecu from the idle?? Or is that even possible? And seems like everyone else has FI.. I'm still NA.
04-19-2007, 10:55 AM
#123
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Originally Posted by westpak
The best way to tune the idle is to get something to read the ECU and the fuel trims specially the short term fuel trims and try to get them to 0, it wont be perfect at zero but at least in the vicinity. Otherwise the ECU will keep bouncing around trying to maintain 14.7
Colin
04-19-2007, 11:01 AM
#124
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Originally Posted by cersoft
Hmmm, interesting, out of interest, are there any tools (cypher etc) that will let you see this info???
Colin
Colin
04-19-2007, 11:48 AM
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Originally Posted by westpak
Unfortunately Cypher doesn't I use Digimoto www.digimoto.com you can see both short and long term fuel trims with it and on both banks.
Colin
04-19-2007, 11:57 AM
#126
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Originally Posted by cersoft
Man, I don't need my idle $190 fixed, it's good enough as it is
Colin
Colin
04-19-2007, 04:21 PM
#128
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Originally Posted by westpak
Unfortunately Cypher doesn't I use Digimoto www.digimoto.com you can see both short and long term fuel trims with it and on both banks.
04-19-2007, 05:08 PM
#129
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Originally Posted by MRC Motorsports
Looks pretty useful for scanning and what not...We use the Snap on Modius for our scanning.
Originally Posted by rcdash
How is it that Cipher ISN'T covering parameters that are present in standard OBD-II? Or does Digimoto have something Nissan-specific in their product???
04-20-2007, 08:39 AM
#130
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Originally Posted by westpak
It is your call no one is forcing you to do it but 190.00 bucks to make sure things are running smoothly seems like peanuts compared to what you have spent already, it is also good for many things like clearing codes, diagnostics.....
The other benefit I can see for getting your short fuel trims correct is that when shifting and the UTEC is interpolating back to the 0% column, if you have set that column too rich it'll log as all the cells back to 0% being rich wich is kinda confusing ...
Colin
04-20-2007, 09:02 AM
#131
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Originally Posted by westpak
The best way to tune the idle is to get something to read the ECU and the fuel trims specially the short term fuel trims and try to get them to 0, it wont be perfect at zero but at least in the vicinity. Otherwise the ECU will keep bouncing around trying to maintain 14.7
If it's a Nissan parameter in the ECU, it seems like something the Cipher guys could add.
UpRev was supposed to come out with a new version of Cipher in February, but it seems to have been set back a few times. Maybe short fuel trim monitoring will be included.
04-20-2007, 08:47 PM
#132
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Ok.. I reflashed my UTEC and the ThrottleControl.mot.. And my CEL went away.. So Hopefully it won't come back.. And I was wondering what should I set my TPS Open Treshold thing? It is the one that you can set from 20 to 100 I think.. It was 65 when I received it.. Should I just leave at 65?? Cause when I reflashed it went to 25.. So.. Just curious.. Thanks guys..
05-29-2007, 01:46 PM
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Originally Posted by keznevin
did anyone still have the power loss problem after the grounding fix?
07 UTEC
Thanks,
jermaine@turboxs.com
05-29-2007, 01:53 PM
#138
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Jermaine,
If you could enlighten us on the subject of an update for us as far as more resolution for the UTEC that would be great.. I know Shariff had mentioned something was in the works and he saw some software during SEMA? and said alot of new features were coming.. Can you please let us know if this is in fact the case or no. I really appreciate it!
Ken
If you could enlighten us on the subject of an update for us as far as more resolution for the UTEC that would be great.. I know Shariff had mentioned something was in the works and he saw some software during SEMA? and said alot of new features were coming.. Can you please let us know if this is in fact the case or no. I really appreciate it!
Ken
05-29-2007, 02:10 PM
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Originally Posted by Kenk2
Jermaine,
If you could enlighten us on the subject of an update for us as far as more resolution for the UTEC that would be great.. I know Shariff had mentioned something was in the works and he saw some software during SEMA? and said alot of new features were coming.. Can you please let us know if this is in fact the case or no. I really appreciate it!
Ken
If you could enlighten us on the subject of an update for us as far as more resolution for the UTEC that would be great.. I know Shariff had mentioned something was in the works and he saw some software during SEMA? and said alot of new features were coming.. Can you please let us know if this is in fact the case or no. I really appreciate it!
Ken
As we get closer I will let you know.
Thanks,
Jermaine~