Dyno Tune

[GD2ILA]

Hello everyone i didn't know if i should post this in the turbo upgrade sticky, but i didn't upgrade my turbos. so i decided to add it here.

i have attached 2 dyno graphs one with standard AFM and one with Z32 AFM. i did this so new people can see how much power they can get for this modification. But remember this is how much i gained on my car, every car is different depending on mods/age/worn engine ect.... But in my instance i gained 17rwkw from adding Z32AFM to my car. Hope this helps you in deciding what mods you wanna do to your car in the future .

[Pal]

needs to go in turbo upgrade section

[89CAL]

Isn't this just standard AFM pushed to max then putting a better AFM on with a larger scope and tuning to suit and getting more power

I don't think if you had for example 190rwkw you would necessarily gain power just by adding a Z32 AFM

[blue_vl_t]

You should find that the z32 air flow meters will give you a larger tuning resolution that the stock ones,

but there really is no way that the Z32 AFM's can give you a power increase on their own.

The stock AFM's will run out of resolution/max out and have no more Voltage range to give at approx 300rwkw, i have had this exactly on my own car, then the Z32's are installed to give tuning resolution past this mark.

The power gain you have shown is most likely because of a diferent day on the dyno, some other modification you performed, or most likely it is running a bit leaner on boost or have more ignition timing.

Not having a go at you, just letting you and others know, that AFM's, just like upgrading fuel pumps and injectors will not give any power increase, but they will support more power.

The only other way a pair of Z32's will give more power on their own would be if the stock 65mm AFM size was restricting the motor and the 80mm size allowed the engine to breath better. The Nismo AFM's are 65mm though, with the tuning resolution of the Z32 AFM, so really, unless we are looking at 550+rwkw, i cant see that being the case .

[blue_vl_t]

haha, both posted at the same time

[R31Nismoid]

Yeah Z32 won't give you more power.

Any extra power would come from tune adjustments, boost, dyno variance etc.

Could even be the old AFM's were on the way out for instance. Or you had a minor leak, so replacing/refitting piping removed that etc. Plenty of reasons why there is more power - the AFM's though ain't one of them.

[GD2ILA]

Hence i'm showing that having Z32AFM would give you more potential to make more power over stock items, off course to make the extra power you would need a proper dyno tune and other mods (that's why i added the mods done listed on 1st graph).

[R31Nismoid]

No you said: "how much power people can get from this modification".

That is distinctly different to "give you more potential to make more power ".

The AFM swap did not give you power. Something else did.

It's common knowledge a Z32 or Nismo AFM will 'read' more air than a stock AFM.

Either way @ 250rwkw, your stock AFMs were not maxed out.

[JonnoHR31]

but everyone already knew that? and as said you didnt gain 17kw just from changing afm's....

[89CAL]

Hello everyone i didn't know if i should post this in the turbo upgrade sticky, but i didn't upgrade my turbos. so i decided to add it here.

i have attached 2 dyno graphs one with standard AFM and one with Z32 AFM. i did this so new people can see how much power they can get for this modification. But remember this is how much i gained on my car, every car is different depending on mods/age/worn engine ect.... But in my instance i gained 17rwkw from adding Z32AFM to my car. Hope this helps you in deciding what mods you wanna do to your car in the future .

Just that part there may have been a poor choice of words. I get what your saying

But the way you put it just sounds like you mean "Put a Z32 AFM on and you'll get more power"

Question but for the more experienced users on here:

Say for a 150rwkw Skyline with a Power FC, just as an example - Would having a standard AFM be better then a Z32 as the resoloution isnt spread out so much? Or am I completely misunderstanding the idea behind this

The way I see it, if you have a 20x20 map on a stock AFM thats good for 150kw (I'm just using a random figure), then you have a 20x20 map with a Z32 AFM map thats good for 300kw (again hypothetical figure). You've got so many more cells to tune the amount of airflow for 150kw as its using all the cells rather then just half on the Z32.

This is just a question, as I've thought about this for a while and this is how I see it, I know that the Power FC intorpolates the 'in between' data, but still would be interesting to know if my assumption is right

Also thought the same applied for injectors? Get stupidly large injectors and you'll have plenty of room to breathe, but lose a bit of the fine tuning

Or am I completly wrong

[Hanaldo]

Hence i'm showing that having Z32AFM would give you more potential to make more power over stock items, off course to make the extra power you would need a proper dyno tune and other mods (that's why i added the mods done listed on 1st graph).

Well... Yeh, obviously lol.

This is like saying you had maxed your stock injectors at 200rwkw so you upgraded your injectors and now make 300rwkw, therefore the injectors gave you an additional 100rwkw. In reality it didn't, it was the other things you modified that gave you the power increase.

I'm not sure what you were trying to show by posting this? I mean is that not the exact reason everyone upgrades their AFM, because they have maxed their stock item?

[mico]

epic power upgrade thread, epic.

[JKR-32]

I want that couple of minutes of my life back.

[JonnoHR31]

Question but for the more experienced users on here:

Say for a 150rwkw Skyline with a Power FC, just as an example - Would having a standard AFM be better then a Z32 as the resoloution isnt spread out so much? Or am I completely misunderstanding the idea behind this

The way I see it, if you have a 20x20 map on a stock AFM thats good for 150kw (I'm just using a random figure), then you have a 20x20 map with a Z32 AFM map thats good for 300kw (again hypothetical figure). You've got so many more cells to tune the amount of airflow for 150kw as its using all the cells rather then just half on the Z32.

This is just a question, as I've thought about this for a while and this is how I see it, I know that the Power FC intorpolates the 'in between' data, but still would be interesting to know if my assumption is right

Also thought the same applied for injectors? Get stupidly large injectors and you'll have plenty of room to breathe, but lose a bit of the fine tuning

Or am I completly wrong

if you set up the power fc to suit yes you would have more accuracy with a standard afm, but you'd be lucky to notice any difference. the afm voltage and power fc load points arent linear either, its exponential. for example, on the power fc base map for a rb25 the last load point (p20) is double p15 and nearly 4 times p10. its set up this way to give more accurate tuning under light load. also you can adjust the load points to suit but the base settings (which almost everyone uses until they max them) arent scaled to suit the standard afm, they suit up to and over 300rwkw without any resolution problems.

as for injectors the only reason you lose fine tuning is if the injectors cant atomize properly at idle and low load or if the ecu/injector drivers arent capable of opening them for short periods with enough accuracy. with a good ecu and decent injectors (id2000s for example) you can have the car idling at the same AFR's and with the same quality as standard injectors.

[AngryRB]

No you said: "how much power people can get from this modification".

That is distinctly different to "give you more potential to make more power ".

The AFM swap did not give you power. Something else did.

It's common knowledge a Z32 or Nismo AFM will 'read' more air than a stock AFM.

Either way @ 250rwkw, your stock AFMs were not maxed out.

what about if it were a r33 gtst, would the z32 be better than a stock afm, at what power output would the z32 be best to use?

[89CAL]

Makes sense. The injector one was more of a random thought I had ages ago but didn't think it would make a big difference

Thanks

[paulr33]

what about if it were a r33 gtst, would the z32 be better than a stock afm, at what power output would the z32 be best to use?

no, the Z32 AFM is not better than the stock GTST afm. Both are 3 or 4 wire, hotwire Air flow meters that are 80mm in size.

The Z32 AFM allows for a wider tuning scale but it does zero to add more rwkw or average power etc.

[AngryRB]

no, the Z32 AFM is not better than the stock GTST afm. Both are 3 or 4 wire, hotwire Air flow meters that are 80mm in size.

The Z32 AFM allows for a wider tuning scale but it does zero to add more rwkw or average power etc.

so say for example, i was at a power level between say 200 and 250kw, would using the z32 give the dyno graph a fatter curve or /more accurate or steeper curve than the standard?

[R31Nismoid]

Have you read the thread? I'm struggling to understand why you'd ask that given the half a dozen posts so far...

All the replies clearly say you won't MAKE extra power, torque, or BOV noises swapping the AFM.

[Hanaldo]

Thread needs to be moved to the NA section.