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N62 MAF Mapping

Posted: Sun Oct 04, 2020 1:12 am
by ff7f00
https://imgur.com/RH2mb9s
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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!

Re: N62 MAF Mapping

Posted: Mon Oct 05, 2020 12:36 pm
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)

Re: N62 MAF Mapping

Posted: Tue Oct 06, 2020 8:31 am
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?

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Re: N62 MAF Mapping

Posted: Tue Oct 06, 2020 8:43 am
by ff7f00
This appears to be the required KConst for the car to idle at a sane AFR with the Z32 MAF selected.

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Re: N62 MAF Mapping

Posted: Tue Oct 06, 2020 7:47 pm
by unex
Increase injector latency, decrease K.
Read some nistune tuning basics.