TwinTurbo.NET: Nissan 300ZX forum - 4th and 5th Gear Rich
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Subject 4th and 5th Gear Rich
     
Posted by SuperBaas786 on February 04, 2010 at 1:42 AM
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Message Hi Guys,

I have a strange problem. I have Nistune on my 1992 TT with a 740cc Gt28R configuration. K values and Latency all set as recommended. Idle is one 100%. Idle, 1,2,3 gears run perfect AFR's. The problem comes in at 4th and 5th gears. As soons as I move into the uppper gears I get AFR's around 10 and it splutters badly after 4500rmp. I have read something about a High Gear Coefficient which can be switched off. Note: 5th Gear map is the same as primary and I used Z from Japan 740z map as a baseline. What could be this problem?

     
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