Jump to content
SAU Community

Recommended Posts

The current one is capable of 330rwkws. I'm looking to trade that 30kws for roughly 300rpms of response making full boost of 20psi by 3900 Rpm instead of current 4200 rpm.

I'll finally be buying a turbo off you around July so ill see where your at with FNT and VNT designs of the G3 then. VNT sounds like it will be great if its a reality that soon

After studying motion of the vnt turbine setup I'm wondering if it actually creep heat when the nozzles directs in opposing direction. Appears the nozzle arrangement needs to be reset from scratch for it to work. Or for what I want it to do.

I've contacted Matt to see if he might know what could cause the corruption, as everything was perfect a month a go when I last drove the car.

There's Nistune documentation that talks about ECU corruption and how it can be caused. Worth a read. A loose Nistune board is just one path to corruption.

There's Nistune documentation that talks about ECU corruption and how it can be caused. Worth a read. A loose Nistune board is just one path to corruption.

Ah great, do you know which of the documents it's in? I've contacted Matt about it but he hasn't replied yet.

Thing is, I didn't touch anything related to the ECU, and it was perfect when I drove it in. Surely it has to be something related to my messing around with it all, it's not just coincidence?

After studying motion of the vnt turbine setup I'm wondering if it actually creep heat when the nozzles directs in opposing direction. Appears the nozzle arrangement needs to be reset from scratch for it to work. Or for what I want it to do.

So this is going to take a while?

Ah great, do you know which of the documents it's in? I've contacted Matt about it but he hasn't replied yet.

Thing is, I didn't touch anything related to the ECU, and it was perfect when I drove it in. Surely it has to be something related to my messing around with it all, it's not just coincidence?

http://nistune.com/docs/NIStune_Diagnostics_Document.pdf

Thanks for that mate.

Makes me wonder whether the message was passed on that my ECU has a Stagea image in it. I forgot to tell Sean when I dropped the car off, but I phoned up and let them know, the bloke was confused but he said he would write it down. Now I wonder whether or not he told Sean before he started trying to tune it, if he tried to use the R34 image with my ECU then it wouldn't have worked. I'll have to give them a call tomorrow morning and get hold of Sean himself.

Edited by Hanaldo

You might be able to get away with editing the fuel & ignition maps (and most other normal tables and scalars) in the Stagea image using the R34 address file, because I've been doing essentially that myself over the last few days. Load up the Stagea address file, then the bin file for what's in my ECU, then an R34 bin as comparison, and looking to see where the differences are. As you'd expect, the two ECUs are essentially the same. Same ECU, same engine. Just a few differences in the ABS/TCS department.

But....because you can do that, it might be very easy for the tuner to use an R34 address file, load up an R34 bin file, then sync from the ECU and or/ sync to the ECU and perhaps cause havoc. Just because there are some differences.

depending on how much problems I might encounter. would be couple of month at least.

Sweet as. ill keep an eye out

I'm waiting till July now till I get something so if its not far off by then I might just wait.

Sounds like it will be impressive :)

This assembly should have some effects, With the device engaged the turbo gains faster response how ever the engine pins up top, with it disengaged the motor picks up 8 degrees of timing up top but loses big chunk of power band down low. So I want it to be engaged till about 20psi then slowly released after that point to gain the top end timing. That way we should have fat power band from start to end.

You might be able to get away with editing the fuel & ignition maps (and most other normal tables and scalars) in the Stagea image using the R34 address file, because I've been doing essentially that myself over the last few days. Load up the Stagea address file, then the bin file for what's in my ECU, then an R34 bin as comparison, and looking to see where the differences are. As you'd expect, the two ECUs are essentially the same. Same ECU, same engine. Just a few differences in the ABS/TCS department.

But....because you can do that, it might be very easy for the tuner to use an R34 address file, load up an R34 bin file, then sync from the ECU and or/ sync to the ECU and perhaps cause havoc. Just because there are some differences.

Yeh well when Matt reprogrammed my board with the Stagea image, he was able to upload my current tune so I could just plug it back in and it was like nothing had changed. Except the misfire at about 5000rpm from the ECU pulling timing was gone.

But if the message hasn't been passed onto my tuner and he is trying to start with the R34 address file and then sync the bin file from the ECU, it wouldn't work as you said. But then I have no idea what he meant when he said it looks like it has earthed out, so I'm not sure.

This assembly should have some effects, With the device engaged the turbo gains faster response how ever the engine pins up top, with it disengaged the motor picks up 8 degrees of timing up top but loses big chunk of power band down low. So I want it to be engaged till about 20psi then slowly released after that point to gain the top end timing. That way we should have fat power band from start to end.

Your the man stao!

I'm keen to seen how this turns out. I have 2 friends who just acquired RB25s and hopefully will be looking for killer upgrades in time for production on these.

Hello, ive got a r33 s2 and wondering what is your best hi-flow turbo for response, only looking to make 220-250rwkw, stock internals with associated mods. Its a daily and would be looking to run between 10-14psi max.

cheers

Standard high flow would be suitable for your applications. I'm generally seeing around 240rwkws with option, how ever I'm recently seening some 260rwkws results based on 15psi from Toshi's remaps using stock injectors, afm and ecu.

So for your goal, get the standard high flow, then pm toshi for ecu flash and that should archeive it.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • From my youth: GTi-R clutch change is a massive pain. The gearboxes are fragile? But the car is super cool and I want one 😢 
    • Remember this is 1988 tech.
    • Driveline vibration is resolved. I ended up loosening all my engine mount and trans mount bolts, giving it a good shake then retightening everything and it's gone... Let's just say I was surprised that fixed it.  I've been happily driving it around again but unfortunately put zero time into my direct port/constant pressure WMI setup. I'm on vacation next week, so I'll try and finalize it then.  On a different note, I spent all week fuel/ignition mapping 2x 216L V16 engines. Turbo's were burning glycol and we swapped them out for larger units. We also had planned emissions testing on site, so I figured I'd be there the same week to use their instrumentation and massage any emissions issues out if needed. This was a first for me. Fuel management is similar in certain ways to automotive (i.e air density as load variable) but very different in others. It's all PLC based and AFR's are controlled by air and not fuel. They use a control valve between the turbo and air manifold to control pressure which in turn controls AFR's. Due to this, target AFR tables supplied by the OEM are in pressures and not mass which really through me off. They use air pressure vs fuel pressure tables. I also relied on an O2 concentration sensor the emissions team had in the exhaust. Ignition timing was also all over the place and we were losing a fair bit of power. They're now happily sitting at 16-40BTDC depending on load. We were making about 1600kw at 900rpm at 90% load. Engines were running a lot smoother as well.    
    • heh, aint no R32 ever meeting modern targa cage rules unless the driver is veeeery short OP, good luck with the sale, since its already in the land of freedom I'm sure you will find a good buyer.
    • meh, it was a good video, clear about the issue and how he dealt with it. A bit heavy on the RTV and very brave to put an RB in anything without rebuilding it first, but otherwise I thought it was good Dose, I'm not sure that having the pickup forward is a big issue; yes of course the oil could shift under brakes but the sump should never be empty enough for that to be a problem (unless you also have a higher volume oil pump, and that oil can't return from the head to the sump quickly enough)
×
×
  • Create New...