z32 vg30dett (620 hp) ?

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jfern
 

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z32 vg30dett (620 hp) ?

Post by jfern »

Is this correct? The MAF vq table in Nistune shows the z32 vg30dett MAF as 620 hp. I thought the z32 maf can up to 550 hp.
Matt
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Re: z32 vg30dett (620 hp) ?

Post by Matt »

The HP figure has been re-calibrated to match the required K constant adjustment we used on the dyno, to get a more accurate start point when swapping MAFs

This replaces the previous 550hp figure which caused K not to be adjusted enough
Eric
 

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Re: z32 vg30dett (620 hp) ?

Post by Eric »

A better way would have been to show the max. cfm/airflow a certain airflowmeter can measure accurately.
But this is not known for all AFM's

a Z32 AFM can measure up to 850 CFM...above that it will just put out a voltage of 5.12v

it'll depend on many factors of how much power an engine can make with that kind of airflow, so max. powerfigures will vary.

on a VG30DETT (from a 300ZX/Z32) this translates to roughly 500 bhp
Matt
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Re: z32 vg30dett (620 hp) ?

Post by Matt »

When we tested we did a resize from the R34 MAF as a baseline and then switched in R32 (about the same), SR20, Z32, R35 GTR, HPX etc and then took the figures from that

The percentage changes did not line upto the current estimated HP readings.

Z32 MAF measures upto about 370rwkw before it hits the 5.12 volt mark which is about 500rwhp as you have mentioned Eric

S2 R33/ER34 MAF measures upto about 230-240rwkw (about 310rwhp) before topping out. The figure for this being same as HCR32 show 360hp in the drop list

R35 MAF measures about 300-310rwkw and getting close to 5v (perhaps about 400-420rwhp) but that shows up at 550hp in the list

All of these figures are higher than they should be and need to be dialed back about 50-80hp but I will need to be careful not to mess it up (there are 46 MAF entries in the list)
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Re: z32 vg30dett (620 hp) ?

Post by Matt »

I've reverted this back to the 500hp for the Z32 and adjusted all other MAF sensors accordingly as well as add new definitions for R35/HPX MAF sensors
CamsX
 

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Re: z32 vg30dett (620 hp) ?

Post by CamsX »

Does this change back to 500hp for z32 modifies the MAF VQ table at all? Would I need to readjust Kconst accordingly?
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Re: z32 vg30dett (620 hp) ?

Post by Matt »

Doesn't change anything. Everything was rescaled with the same multipliers around the 500hp number
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