Ecu Reccomendations

[iruvyouskyrine]

Hi all.

First off, RB25/30, Hypergear SS2, 20psi, E85, 45mm external gate. Car will be driven on the street semi-regularly and will do as many drift days a year as possible (probably 6-7)

I had originally planned on getting an Adaptronic and converting to MAP sensor for this build, but cash is very limited at the moment so now i am asking you guys for your advice. I already have a NIStune and a Z32 AFM, so i am thinking i may stick with that setup. I do have some questions though;

> Would a Z32 max out at 400kw on a 3 litre bottom end?

> Is there any issues running the AFM in the cooler piping?

I don't think i really need any of the features the adaptronic offers, the only thing i am unsure about if the ability of the nistune to keep the engine safe in undesirable conditions as it doesn't have any spare inputs for oil temp/pressure etc. I guess i will just have to do it the old fashioned way and keep an eye on my guages! Just trying to figure out where my money is best spent, and i think the NIStune will do the job fine provided the Z32 AFM won't be a restriction.

Thanks guys

[Badgaz]

Link g4+ do you wish to data log or input wideband?

The hot wire mass air flow sensors could be affected by the temps if they aren't on the suction side of the turbo from my thinking..... But others may have a proven answer

Edited June 30, 2014 by Badgaz

[KiwiRS4T]

Nistune will get you in the road. Z32 AFM is good for more than 300kw - how much more seems to vary . There are apparently more than one type of Q45 afm and some are good for better than 400kw..

I would keep the Nistune and Z32 and save up for a better ecu such as Link/Vipec or whatever you like later.

[Ben C34]

Keep the nistune.

Allows data logging and wideband input already.

[WMDC35]

As above really, the Nistune will do the job but if $ to spare go for a G4 or whatever your tuner prefers

[Ben C34]

Just to elaborate on my previous comment.

Nistune will log all ecu parameters.

In order to log more you need something else. I use a zeitronix zt2 which does wideband O2 and a heap of other inputs and Nistune picks it all up. I only use one for boost as I don't need to or care about logging others.

Look at blah blahs' s result. I think that was nudging 400rwkw not sure on the afm he used.

[Blackkers]

My understanding is that the afms have an airflow limit which roughly translates to a power limit. But on e85 you make more power for the same airflow so that power ceiling is a bit higher

According to nistune the z32s are good for 500hp (from memory) but probably a bit more on e85

The other thing is you might want a 4inch intake on that set up

[Ben C34]

Its not that the afm actually restricts airflow to create the power limit, it's due to the sensor being unable to read any more air flow.

The sensor outputs 5V (max) and then the ecu and tuner have to guess. Which isn't ideal.

[Ben C34]

And yes you are right blockers, you can make more power on e85 for the same airflow on e85 due to being able to run more timing.

[iruvyouskyrine]

Definitely will not be getting a Link G4+ as i know i don't need something that powerful for my applicaiton, and the budget is already being very stretched to cover the Adaptronic. I understand that what Ben said is correct, the AFM can only measure so much air (which translates to so much power) before reading 5v and then any extra air that does flow through is not recorded.

Was also looking at the Q45 as someone suggested, the advantage to that is its 90mm and would fit better in my intercooler piping.

I don't care about data logging, all i really need is wideband input and i am happy, which NIStune will provide.

[XRATED]

stick with the nistune and use a vh45 afm if you need the extra resolution.

use the money you save for more tyres

[Badgaz]

could you put the z32 into a larger tube? i think the z32 still has better resolution than that q45.

[Ben C34]

could you put the z32 into a larger tube? i think the z32 still has better resolution than that q45.

Sort of. The sensor is part of the body so you would have to do some hacking. It would also make thing difficult as there won't be a pre existing table for voltage vs airflow.

All afm's have the same output of 0 to 5V it's just that most max of to 5V at a lower air flow.

(Not really true as some use a pulse signal but not nissan so who cares! )

Hpx make custom airflow meters that read alot of air. Matt at nistune amongst all his other work is looking at creating the neccessary tables to use them.

Edited June 30, 2014 by Ben C34

[Blackkers]

Its not that the afm actually restricts airflow to create the power limit, it's due to the sensor being unable to read any more air flow.

The sensor outputs 5V (max) and then the ecu and tuner have to guess. Which isn't ideal.

That's what I meant I didn't mean to infer that the 80mm pipe will be the power restriction

[iruvyouskyrine]

stick with the nistune and use a vh45 afm if you need the extra resolution.

use the money you save for more tyres

Just doing some research on the topic and i saw that back in 2011 you said you were running a Z32 in your cooler piping. Was it cold side or hot side? No noticeable issues?

Turbo outlet is 2.5" so the 3" Z32 is already bigger than my cooler piping. Will have to step it up to put the Z32 in there

Also i won't be running a BOV if i don't have to.

Edited June 30, 2014 by iruvyouskyrine

[Dose Pipe Sutututu]

Use a R35 AFM in a larger tube..

food for thought:

http://www.pmas-maf.com/store.php#!/~/product/category=8217001&id=32363037

Nistune doesn't have wideband input, only uses the factory narrowband.

The wideband is read by the software on your laptop only through a serial output from your wideband controller or gauge (all in one units)

[Ben C34]

Which is what I said!

[Dose Pipe Sutututu]

Which is what I said!

you weren't clear, sounds like you said the ECU can take in a wideband input and use that

[Ben C34]

I speak English

And alot of crap.

Edited June 30, 2014 by Ben C34

[iruvyouskyrine]

Use a R35 AFM in a larger tube..

food for thought:

http://www.pmas-maf.com/store.php#!/~/product/category=8217001&id=32363037

Nistune doesn't have wideband input, only uses the factory narrowband.

The wideband is read by the software on your laptop only through a serial output from your wideband controller or gauge (all in one units)

That looks interesting. Could just stick that in my 2.5" intercooler piping and forget about it rather than having to try and fit the Z32 in there. I am still not sure if i should put it in the hot or cold side of the piping though...