TwinTurbo.NET: Nissan 300ZX forum - Re: Re: Re: I have sport 500 and 555cc
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Subject Re: Re: Re: I have sport 500 and 555cc
     
Posted by sorka on November 15, 2005 at 12:00 AM
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In Reply To Re: Re: I have sport 500 and 555cc posted by dream Z on November 14, 2005 at 11:20 PM
     
Message I will dyno it once I'm close to being done tuning it but I don't need to do that see a graph. I'm using an LM-1 and conZult synchronized and then graphing the data in excel. I live near a very long deserted road, so I have the opportunity to do as many 4th gear redline runs as I need.

Here's an early example. This was when I was really lean on the drivers side because of a badly aligned plenum. I was also concerned about the fluctuating MAP values. JWT said this was totally normal. The AFR does not use SAE smooth so it's also a little bumpy. Interesting thing is, with the boost controller on, the MAP reading is perfectly smooth and so is the AFR. Just to give you an idea how unbalanced the AFR was, the first graph is on the drivers side and the second graph is of the passenger side. It turned out the unbalanced AFR was caused by a misaligned plenum because the bolt holes were machined *way* off center. That's now fixed and I have perfectly even AFRs.

The third chart...way way below... is one from a few days ago which doesn't have the latest changes, so it's still wasn't what I wanted.

Drivers side. Dangerously lean:

Passenger side:
http://5656.smugmug.com/photos/34101729-O.jpg ]">

Particularly lean between 4200 and 5000 RPMS. The next chart which isn't up yet has a more pronounced drop to 11.5 at 4000 RPMs and stays that way flat all the way to 7K RPMs. I'll have that one up in a few days.

     
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