N62 MAF Mapping

Nistune topics specific to the 6802 cpu

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ff7f00
 

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N62 MAF Mapping

Post by ff7f00 »

https://imgur.com/RH2mb9s
Image

22680 30P00 A36-000 N62

I'm using the above with a 1990 S13 KA24E-T with Deatschwerks 550cc Injectors.

I'm having trouble finding a definitive resource that would help me map the above part number to a MAF in the MAF Calibration dropdown list. It supposedly maps to a Z32 from a 300ZX but I'm not 100% sure. I attempted to use "Z32 VG30DETT (500hp)" and "J30 VG30DE (LATE) (403 HP)" and the car wouldnot idle/stay on.

I switched it to the Z31 VG30ET (266 HP) and this is the only MAF option so far that will keep the car idling.

Was hoping someone might have a better idea. Thanks!
Matt
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Re: N62 MAF Mapping

Post by Matt »

That MAF is Z32 300ZX. You might need to further adjust the K constant after resize to get the injection time right (set for 2000rpm light load, once you can somewhat get it running)
ff7f00
 

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Re: N62 MAF Mapping

Post by ff7f00 »

Matt wrote: Mon Oct 05, 2020 12:36 pm That MAF is Z32 300ZX. You might need to further adjust the K constant after resize to get the injection time right (set for 2000rpm light load, once you can somewhat get it running)
hmm, okay will try and get the K-Constant sorted with the "Z32 VG30DETT (500 hp)" MAF option.

Here is my current K-value. Does this seem ballpark correct for my 550cc injectors?

Image
ff7f00
 

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Re: N62 MAF Mapping

Post by ff7f00 »

This appears to be the required KConst for the car to idle at a sane AFR with the Z32 MAF selected.

Image
unex
 

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Re: N62 MAF Mapping

Post by unex »

Increase injector latency, decrease K.
Read some nistune tuning basics.
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