Power Fc Vs Nistune

[wolverine]

x13 for keep your ecu (whatever it is) and get it tuned by a competent tuner.

Jez is top bloke.

Unigroup are also worthy of a mention in Sydney.

[Ruff Ryda]

Lots of mis-information there ^^^^

In regards to...?

BTW to correct my last post, Power FC D-Jetro has a lot more tuning capabilities so don't get me wrong. In terms of tuning it's a big deal but in terms of power difference then there wouldn't be a big difference between a NIStune and PFC.

Most of it came from NS, so......

This is true but how well it's paid off? We'll see how the flames go.

[Rolls]

What are some stand out features of the D-Jetro that make it better than a nistune for tuning? and have you personally used both to determine these differences?

Edited July 20, 2011 by Rolls

[Fry_33]

I would have thought that if the Nistune handles the Z32 AFM's and aftermarket injectors etc that it would be the better option. That is if it can control the idle better than a PFC and peg back the timing it it is knocking. If it doesn't then it is going to be pretty similar as far as I can tell. I haven't read up much on the Nistune as I have a PFC which is why I'm not too sure about it's exact pros and cons. If if is the change in AFM that causes the idle issues with PFC then maybe Nistune is in the same boat depending on what it can adjust for idle?

Is there a better option for Nistuning an R33 GTST, ie any pros and cons of Z32 or R32 ECU's?

[Rolls]

Z32 can control the VCT and it has something else that it can control better, I can't remember but pete from nistune was telling me, might have been something with the knock sensors I can't remember.

But you can easily control the VCT via an MSD window switch or an eboost street (with built in window switch). There is plenty of discussion on the nistune forums and on here regarding the differences if you do a search though.

[GTSBoy]

I would have thought that if the Nistune handles the Z32 AFM's and aftermarket injectors etc that it would be the better option. That is if it can control the idle better than a PFC and peg back the timing it it is knocking. If it doesn't then it is going to be pretty similar as far as I can tell. I haven't read up much on the Nistune as I have a PFC which is why I'm not too sure about it's exact pros and cons. If if is the change in AFM that causes the idle issues with PFC then maybe Nistune is in the same boat depending on what it can adjust for idle?

Is there a better option for Nistuning an R33 GTST, ie any pros and cons of Z32 or R32 ECU's?

Nistune can be set up to idle really well with most changes, but as with all such things, spastically large injectors or massive AFM capacity mean that you're working at the very bottom end of the scale (pulse width or AFM voltage) when idling, so you'll still end up with fluffy behaviour once you go past a certain point. It is the factory ECU in all respects except that you can change the maps and the various other values. So the code that makes it run remains the same - the same smarts. I suppose there are probably a number of places where we push the tuning out past where the ECU designers expected it to operate and so the code might not be smart enough - but it still works pretty well even when pushed. The main place where Nistune falls down is when you want to do things that you can do with aftermarket ECUs like run aux outputs and ECU based boost control.

The other place where Nistune suffers is that the factory ECU sometimes sucks at reliably detecting knock and switching to the knock maps. Some will work fine. Some will change to the knock maps when there's no real knock at all, and others won't change when it's pinging its tits off. Mine was wrongly convinced it was knocking, so we ended up having to make the knock maps the same as the main map to keep the tuning as we wanted it. Some years later, it's still running that way and it's perfectly fine.

If you use an R32 ECU to run an RB25, the main thing is you need to use an external control box to switch the VCT at the right points. If you use a Z32 ECU, it can do the VCT already and you just have to rewire the outputs for the different firing order. They are otherwise all almost the same ECU. The tunability and so on is all pretty much exactly the same. The Z32 is probably the easier option overall.

There may be other points for an aganist, but that's pretty much the core of it.

[Rolls]

Yeah do not trust the knock sensors, I had audible knocking that was not picked up with them. From talking to pete he is in the mind that due to overwhelming engine noise above ~5k the knock sensors increase the threshold massively and basically ignore knock, hence if peak torque is above 5k then it will probably ignore knock, where as with the stock turbo peak torque (and hence where knock usually occurs) is around 4k

Edited July 20, 2011 by Rolls

[Torques]

I bought into Nistune since I wanted to have data logging and the ability to map

via a connected PC with all the data presented nicely.

I do map myself, but if you're not into that kind of stuff you might consider the PFC.

Knock detection display is still under development with Nistune, so if you want some flashing lights

at knock events you better go for the PFC.

Also the Z32 ECU is not directly a plug in ..

The ECU printed circuit board has to be slightly changed.

So for a tuner the PFC is probably the easier option (as for installation)

Yeah do not trust the knock sensors, I had audible knocking that was not picked up with them. From talking to pete he is in the mind that due to overwhelming engine noise above ~5k the knock sensors increase the threshold massively and basically ignore knock, hence if peak torque is above 5k then it will probably ignore knock, where as with the stock turbo peak torque (and hence where knock usually occurs) is around 4k

[Torques]

You don't have to rewire the firing order ...

That was a misconception and has been corrected in the Nistune documentation.

If you use a Z32 ECU, it can do the VCT already and you just have to rewire the outputs for the different firing order. They are otherwise all almost the same ECU.

Edited July 20, 2011 by Torques

[DVS JEZ]

Correct.

A few things like fuel temp sensor needs to be changed inside the z32 ecu.

Ill be doing a z32ecu to rb25 on my new 32gtst drifter.

Just need to find an ecu for cheap.

[GTSBoy]

Ah. OK. I haven't looked at the R33 RB25 situation for Nistune for a couple of years, and have jumped right over the need for stuffing around by going to a Neo.

[The Mafia]

I'm a tuner, I do powerfcs, Vipec, and Link.

Played with a nistune, it is by far the best on a budget, and just as capable as the powerfc, if not more capable.

The others are for higher performance applications.

[D_Stirls]

Correct.

A few things like fuel temp sensor needs to be changed inside the z32 ecu.

Ill be doing a z32ecu to rb25 on my new 32gtst drifter.

Just need to find an ecu for cheap.

You can get them from the states pretty cheap. I paid ~US$50 + Postage.

[sneki81]

You can get them from the states pretty cheap. I paid ~US$50 + Postage.

have you got a link at all??

[D_Stirls]

have you got a link at all??

That was second hand (of course) and was through eBay and was 18 months ago so no link but i'll have a look now. There were a number at that price back then.

EDIT!! Here's one close to that price,

http://www.ebay.com.au/itm/1990-NISSAN-300ZX-ECU-Engine-Computer-A18-A68-MB1-/170669745331?pt=Motors_Car_Truck_Parts_Accessories&hash=item27bcb5a4b3

Edited July 21, 2011 by D_Stirls

[DVS JEZ]

Ill be watching that one like a hawk.

I need 2.

[Ruff Ryda]

What are some stand out features of the D-Jetro that make it better than a nistune for tuning? and have you personally used both to determine these differences?

By what I've read, the MAP sensor doesn't rely on air flow but it functions via air pressure which can lead to better response and power output once tuned correctly. D-Jetro also has launch control, fuel / ignition cut, anti-lag, NOS, etc which are some features you may or may not use.

I was going to take this path, but I wasn't aiming for high power so based on my findings and having a NIStune setup, the NIStune is the best bang for buck. Hit up a few searches and this will also confirm what I've just typed.

Power FC is 20 x 20 and NIStune is a 16 x 16 resolution so if it's a high RPM revving monster then PFC should be considered.

I remember reading that NIStune is tuned cell by cell at 500 RPM intervals, think it was ns.com though so take that with a grain of salt.

[Fry_33]

By what I've read, the MAP sensor doesn't rely on air flow but it functions via air pressure which can lead to better response and power output once tuned correctly. D-Jetro also has launch control, fuel / ignition cut, anti-lag, NOS, etc which are some features you may or may not use.

I was going to take this path, but I wasn't aiming for high power so based on my findings and having a NIStune setup, the NIStune is the best bang for buck. Hit up a few searches and this will also confirm what I've just typed.

Power FC is 20 x 20 and NIStune is a 16 x 16 resolution so if it's a high RPM revving monster then PFC should be considered.

I remember reading that NIStune is tuned cell by cell at 500 RPM intervals, think it was ns.com though so take that with a grain of salt.

Even though the PFC has more cells to adjust the standard ECU calculates/interpolates better between them. I think the new HPI covered this subject come to think of it. The standard ECU takes TPS into the load calculation. Not sure if all PFC's do that? So if you got your cells as smooth as the PFC with the Nistune then is should calculate the load points better under dynamic conditions. In saying that I don't know if you can adjust the load points, ie if you can't what happens once you go above the standard redline?

[DVS JEZ]

Nistune CAN adjust rpm points and load points.

So if boost is increased load points must be increased. Same as rpm limit.

[Rolls]

Can you do a non linear scale with nistune? I know you can with some other ecus.