Jump to content
SAU Community

Restoring R32 ECU with Mines tune?

weikleenget
 Share

Recommended Posts

weikleenget Explorer

weikleenget

Posted
Posted

Hi all, as the title suggests my R32 GTR has an ECU with a Mines tune which worked really well in summer and was a ton of fun, but now that the cold weather has set in, it’s running very rich and won’t get above 2500rpm without the throttle retarding. 

I understand that they epoxied the RAM to the OEM board with this tune so resetting is tough but I’m wondering if anyone knows a specialist who can revert it back to OEM settings?

Thanks!

Link to comment
https://www.sau.com.au/forums/topic/482998-restoring-r32-ecu-with-mines-tune/
Share on other sites
Duncan Grand Master

Duncan

Posted
Posted

To answer directly, no, I don't know how they physically achieved the reflash of the ECU. 

However, the change in tune from factory is minor and unlikely to be your issue. If it is misfiring as it comes on boost it is likely to be some issue other than the tune. What boost is it hitting just before it starts to cut out (might be overboosting due to a boost control issue), or perhaps just an air leak somewhere.

joshuaho96 Veteran

joshuaho96

Posted
Posted
On 11/9/2021 at 6:51 AM, weikleenget said:

Hi all, as the title suggests my R32 GTR has an ECU with a Mines tune which worked really well in summer and was a ton of fun, but now that the cold weather has set in, it’s running very rich and won’t get above 2500rpm without the throttle retarding. 

I understand that they epoxied the RAM to the OEM board with this tune so resetting is tough but I’m wondering if anyone knows a specialist who can revert it back to OEM settings?

Thanks!

I doubt you can revert, removing the epoxy would probably damage the board beyond repair. I would just try and source an OEM ECU with the stock map.

weikleenget Explorer

weikleenget

Posted
  • Author
Posted
On 11/9/2021 at 1:46 PM, Duncan said:

To answer directly, no, I don't know how they physically achieved the reflash of the ECU. 

However, the change in tune from factory is minor and unlikely to be your issue. If it is misfiring as it comes on boost it is likely to be some issue other than the tune. What boost is it hitting just before it starts to cut out (might be overboosting due to a boost control issue), or perhaps just an air leak somewhere.

At any amount of boost and the throttle is almost completely retarded, and the car starts shuddering. It’s gotten significantly worse as the weather gets colder, and wasn’t an issue at all above 70*. I don’t think I have a misfire, had a compression test done and they tested all the cylinders everything was fine. Just happens when boost comes on in the cold

GTSBoy Grand Master

GTSBoy

Posted
Posted
On 11/10/2021 at 7:53 AM, joshuaho96 said:

I doubt you can revert, removing the epoxy would probably damage the board beyond repair. I would just try and source an OEM ECU with the stock map.

It's just an EEPROM. Epoxy isn't some magical substance. Anyone sufficiently fearless with a small Dremel burr would be able to remove epoxy from around the Mines chip legs sufficient to be able to get the chip out and a stocker (or more sensibly, a Nistune board) back in its place.

Having said that, a Mines ECU is essentially a bin job. They should never have existed.

On 11/10/2021 at 12:05 PM, weikleenget said:

At any amount of boost and the throttle is almost completely retarded,

Throttle doesn't retard. What exactly are you saying?

What does the boost gauge say? What is the fuel pressure? What is the AFM voltage at the time?

joshuaho96 Veteran

joshuaho96

Posted
Posted
On 11/9/2021 at 5:58 PM, GTSBoy said:

It's just an EEPROM. Epoxy isn't some magical substance. Anyone sufficiently fearless with a small Dremel burr would be able to remove epoxy from around the Mines chip legs sufficient to be able to get the chip out and a stocker (or more sensibly, a Nistune board) back in its place.

Having said that, a Mines ECU is essentially a bin job. They should never have existed.

Almost guaranteed I would grind into the board trying that and scrap it, maybe some people have steadier hands but I assume most people aren't that precise with a dremel. Someone will surely buy it just for the Mine's name, so better to just sell it and get a stock ECU which everyone seems to get rid of for a standalone these days.

weikleenget Explorer

weikleenget

Posted
  • Author
Posted
On 11/9/2021 at 7:58 PM, GTSBoy said:

It's just an EEPROM. Epoxy isn't some magical substance. Anyone sufficiently fearless with a small Dremel burr would be able to remove epoxy from around the Mines chip legs sufficient to be able to get the chip out and a stocker (or more sensibly, a Nistune board) back in its place.

Having said that, a Mines ECU is essentially a bin job. They should never have existed.

Throttle doesn't retard. What exactly are you saying?

What does the boost gauge say? What is the fuel pressure? What is the AFM voltage at the time?

I’ll have to check fuel pressure and AFM voltage but boost won’t go positive. What I mean is the throttle loses all response above 2500rpm, pedal turns to mush and the car shakes

blind_elk Grand Master

blind_elk

Posted
Posted
On 11/10/2021 at 1:51 AM, weikleenget said:

...and won’t get above 2500rpm without the throttle retarding.

Isn't this a symptom of a problem in the AFM? So, maybe the colder weather has caused a gap to open up in a broken solder joint.

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • 25RBGT
      Got this r31 silhouette flood car to rebuild.

      By 25RBGT · Posted

      IMG_8641.mov     She doesn’t sound the best but starts with out using any gas now. I just ran some injector cleaner through her. started roughly the first time after adding it but gave it the beans slowly upto 4k, Must have cleaned a few cobwebs out. another step in the right direction for the sub
    • Kinkstaah
      R34 Diff oil

      By Kinkstaah · Posted

      Sadly I can confirm if you are actually seeking to drift, you will quite easily spin up one wheel. Even if you're going in a straight line. I am not entirely sure of the metrics/terminology here but there's only a certain amount that the helical will actually spin both wheels. I've seen it on video with my own car where two lines of smoke switch over to just one after you really get in to it. Unlike with a clutch diff where you can keep your foot planted until the car regains grip, in my experience with the helical you want to be utilizing traction control allowing LIMITED slip or lifting (partially) when you start to spin up both tyres with a Nissan helical. Which makes them pretty sub optimal for drifting duty. That said... this is probably a helical on numbers alone. Just put the Kazz in
    • GTSBoy
      Short shifter r34

      By GTSBoy · Posted

      Let's just fix the problem by f**king the rest of the gearbox.
    • GTSBoy
      R34 Diff oil

      By GTSBoy · Posted

      Unlikely, as per Greg's post. This is not helical diff behaviour unless one wheel is up off the ground. Shimming what? You don't "shim" a mechanical LSD. Probably not in the sense that you have heard of people "shimming" a diff. And the process that Nissan f**kwits call "shimming" a diff involves super-preloading a VLSD cartridge against the side of the diff to create a friction/wear point (in a place that it wasn't supposed to have one) to make the sloppy, useless, viscous diff into a hybrid viscous/mech abortion. In case it isn't clear, I consider the process to be stupid. Nike.
    • Duncan
      Short shifter r34

      By Duncan · Posted

      How much does the shifter move when the car is in gear with the engine off? If it is more than about 1cm you need to replace your shifter bush. Your shifts will just get crunchier, not faster, with a short shifter unless you also rebuild the whole box
×
×
  • Create New...