Q45 AFM max HP?

[Torque]

I think that when I changed my AFM from Z32 to Q45 it was because in NT the horsepower rating was above that of the Z32.
(That's about 3 years in the past)

I recently had a look at NT (change MAF) and the Q45 is listed at 444HP?

My car makes about 420HP and the MAF value at that point is 4.8V (that's about 80% of the MAF voltage / flow range)
So when I add the remaining 20% I get to about 500HP, not 444.

[unex]

how to you calculate 20%? 5.1v compared to 4.8v does not look for me 20% difference. More like 6-7%

[Torque]

Hello,

You're correct with the % calculation if it were a linear relationship (voltage/flow), however it is not.
(please see attached)

Capture.JPG

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[Matt]

The change was done when the original file around 2008 was 480hp and changed in 2011 to 444hp (so six years ago)

Are you referring to engine or rwhp?

420rwhp = 313rwkw which is about the same as the limit for the R35 MAF

We dont have an accurate HP measurement for the Q45 but from what I know so far is that it maxes out sooner than the Z32 (500rwhp)

[Torque]

Thanks Matt..

.. that explains it.
I was thinking engine not rwhp.

If I should ever reach 500 at the engine I will let you know what the voltage is.

The Q45 has a lager diameter, it's interesting that it maxes out earlier.
Also MAF curves for both look very similar.

[STATUS]

best swapping out to something else anyway, the q45 is a pain to work with on small engines and small inj pulsewidths.