R34 GTR Engine Management Options

[GiJOr33]

After looking into R34 GTR's and their upgrade paths, i was wondering what people do as far as engine management goes. That monitor that sits in the dash i assume hooks up to the standard computer, so if you replace the stock computer with an aftermarket one does it mean you lose all function of that display? What are the options to keep the full functionality of the display unit but also allow much better tunability of an aftermarket ECU?

Just wondering what you R34 GTR owners have done...

Cheers,

Andrew

[meshmesh]

Good Question... I'd also like to add to that if I may.

I believe the Boost Controller setting is adjustable on the R34 but only upto 1.2bar~. I remember someone mentioning that Nismo or Apexi have a software upgrade option for the monitor panel.

[Snowman]

No you are both confused.

The monitor that sits on the dash is just a large range of electronic clusters if you like. All they have in it is readings of various factors such as exhaust temps, boost, battery voltage etc. There seems to be a lot of stuff but there isnt really. The only thing you can change through that system is the "redline" values. EG if you want the little red warning light to come on when your oil temp hits 120deg you can set it to that value. But nothing to actually CONTROL any values.

The aftermarket ecu has nothing to do with it. I run a power fc on my r34 gtr btw. It did previously have a mines ecu. There are no limiting options with them.

As for the boost controller simon - there isnt one. Again all you can do is set the redline factor again. the max level the standard little computer goes up to is 1.2bar.

If you want to further that there is a Nismo aftersales option which has increased the boost screen to 2.0bar - also contains things like the g-force meter and lap times you see on those english GTR dvd's.

Hope that clears things up.

[GiJOr33]

aaahh... sweet. So the screen is it's own computer that gets the readings from various sensors rather than from the ecu itself (which would get them from other sensors). So if you pull out the stock ecu the monitor will still be able to display the items as normal. The nismo aftersales option, is that just a display upgrade? So if i got a powerfc and the nismo aftersales option i could see 1.8bar on the screen? Or is the aftersales option only available if you keep the stock ECU?

Thanks for the info

Andrew

[Snowman]

The best thing you can do is think of them as completely seperate entities. You can get the nismo upgrade for the display until and it has no consequence over the ecu what so ever. As I said all it is is a set of electronic display clusters. There is basically 3 different screens. One shows you ALL of the elements in a simple line format - this looks unexciting but eventually this is the screen you will use the most. Secondly there is a screen where you can chose any 2 parameters and it will show them in a dial format and record the highest peak for that run, and finally there is a screen where you can chose one parameter and next to it there will be a graph plotted of the results against time. This looks cool but Id rather be able to see everything at once.

As far as getting the nismo upgrade well IMO you really have to be made of money to get it. All its really going to do is allow you to read up to 2.0bar on your boost on this screen. However - chances are that if you are going to be putting in aftermarket turbo's you will have some form of EBC that will be telling you your boost anyways so spending the $1,000 on the nismo screen upgrade seems extreme to me.