Jump to content
SAU Community

Recommended Posts

  • Replies 765
  • Created
  • Last Reply

Top Posters In This Topic

Quick update Trent

Got sent a map from one of the guys on the SOC forum and tried it last night and the car ran perfectly. Came to the car this morning and running rough as hell again, with a definate smell of petrol until the engine died. Reconnected the stock ecu and ran fine. Drove the car 25 miles to work no problem. At work reconnected the emu and now the car won't even start. Is this starting to indicate a potential problem with the emu hardware? Harness should be OK, as it is a genuine Greddy N4 harness. Totally lost what to do next other than chuck the lot in the bloody bin and give up! :O

I've come across one annoying problem with the emanage, while stuffing around with the laptop when connected to the emanage with the car running somehow the map becomes corrupted and car runs megga rich on idle and can't rev past about 2 grand. However the problem is easily fixed, start a new map and then copy all the infomation across to the new map and car runs fine again....wierd.... its done this to me twice now.

Anyone know what a safe rev limit is on RB25 I want to push it up just a bit to say 7200, 6800 doesn't seem enough.

Edited by SevenAngryPenguins

I've had that happen too, but not since the latest software upgrade. When it's happened I've looked at the datalog and the emu has stopped outputting an afm signal. Start a new map and it's all fine again.

The hydraulic lifters on mine started complaining at 7500 so I wouldn't go above 7200. Personally, I left it at 7000 as I really don't need any more revs. Especially with a 3.7:1 ratio diff :O

I've had that happen too, but not since the latest software upgrade. When it's happened I've looked at the datalog and the emu has stopped outputting an afm signal. Start a new map and it's all fine again.

Yeah there was an old glitch in the software that did that on occasion but the new updates have cleared that up.

Quick update Trent

Got sent a map from one of the guys on the SOC forum and tried it last night and the car ran perfectly. Came to the car this morning and running rough as hell again, with a definate smell of petrol until the engine died. Reconnected the stock ecu and ran fine. Drove the car 25 miles to work no problem. At work reconnected the emu and now the car won't even start. Is this starting to indicate a potential problem with the emu hardware? Harness should be OK, as it is a genuine Greddy N4 harness. Totally lost what to do next other than chuck the lot in the bloody bin and give up! :O

is the temp reading accurate i the EMU datalog? if not you need to swap jumpers. D board does not have the inbuilt temp vs inj adapter built in.

Yeah there was an old glitch in the software that did that on occasion but the new updates have cleared that up.

which software update is that? I'm running 2.16 downloaded from mohdparts.com

which software update is that? I'm running 2.16 downloaded from mohdparts.com

yeah, is the emu updated? as i have not had that issue for months now.

um, emu has the 2.16 firmware as well it seemed to of done it when the laptop shut down and had to be restarted, well I think

yeah check it updated, then load say rb20 into your EMU then start a complete new rb25 setup file and load that into the EMU and see if it fixes your issues.

ok will do I'm pretty sure it updated the first time I connected it after the update though. Your boost cut settings worked as well thanks for that, I just had to change one of the settings a bit lower and it was all good. I Think my rubber intake was sucking closed as well, I reinforced it after the boost cut settings didn't work at first.

Edited by SevenAngryPenguins

Hi guys.... I plugged in and turned on my EMU yesterday. So many questions....

Firstly, I have a D board, is this a major issue???? Trent, if it is, can we do a deal re your spare E board?

Secondly, when I had it on the dyno (I got some free time from a place I used to work at), I couldnt make any changes stick.... I.e. whenever I changed the airflow adjustment map, the stock ECU brings the values back to lambda.... How do i get rid of this, as in turn on closed loop?

I'll think of some more no doubt

Hi guys.... I plugged in and turned on my EMU yesterday. So many questions....

Firstly, I have a D board, is this a major issue???? Trent, if it is, can we do a deal re your spare E board?

Secondly, when I had it on the dyno (I got some free time from a place I used to work at), I couldnt make any changes stick.... I.e. whenever I changed the airflow adjustment map, the stock ECU brings the values back to lambda.... How do i get rid of this, as in turn on closed loop?

I'll think of some more no doubt

if you want to tune in closed loop areas disconect the o2 sensor. Also dont use the airflow adjustment map use the injector map.

happy tuning :thumbsup:

I have a question regarding the airflow adjustment map. I have been tuning the car using the injector map and have got the afr's pretty good but not quite perfect as the afr can change a little bit from within the same rpm tuning square. I think I read in this thread somewhere that you can use the airflow adjustment to fine tune the afr by changing the maps scale for finer adjustment. Is this still possible when my airflow meter is maxed out? I only really want to clean up my high rpm afr's

I have a question regarding the airflow adjustment map. I have been tuning the car using the injector map and have got the afr's pretty good but not quite perfect as the afr can change a little bit from within the same rpm tuning square. I think I read in this thread somewhere that you can use the airflow adjustment to fine tune the afr by changing the maps scale for finer adjustment. Is this still possible when my airflow meter is maxed out? I only really want to clean up my high rpm afr's

use injector map 2 and set your scale from where you want to clean up, for example you have a weird spot at 6250 you camn actually run the map scale from 6000 to 7000 (6000-6500 etc) and have the scale real specific around your problem (see attached pic)

you can do the same with timing. All secondary maps work on top of map 1 so any adjustments on map2 will be added to map1 ; so if you have plus 15% fuel in map1 at 6250 and 5% at 6250 in map2 you will have a total of 20% extra fuel at 6250.

hope it helps

post-34927-1212502312_thumb.jpg

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



  • Latest Posts

    • Had a go at the stuck crush tube this afternoon. Tried things like grips and a chain wrench first but wouldn't just twist straight off. So got to work with a drill. Started small and kept a depth stop on to make sure I didn't drill into the bolt. Made a line of drill holes all the way up and enlarged them. Then a combination of chisel and Dremel to split it all the way up. Levered the split to get oil in there and eventually it gave a bit while levering. Worked it back and forth with loads more oil till it was spinning freely, then with grips I could work it downwards and off. And no significant damage to the bolt (not by me anyway - just the 27 years of rust)
    • Well, I'm tired. I'm tired because about 4PM yesterday, before today's appointment someone immediately bought my bumper. They couldn't get it any other day as they're on the way back to NSW. So I had to do that big GTR conversion I had been planning. Unfortunately, the information on SAU about what you need and how this is done is incomplete. So what should be a simple bolt on affair, yeah, it's not. Did you know if you use all GTR items the bonnet won't close? This little manuever sent me into about 1am the night before trying to dodge a way to get it closed. I will have to revisit this in the next few days  - or maybe not, I may let a body shop figure it out. It all needs to come up and my motivation to pull the bumper off is low. It also seems to hit things in the bay where the GTT bonnet didn't. Yes I used 100% new OEM GTR items. Today, I had the joy of driving to the dyno looking like this: Given I had roughed in the fuel and given sensible but pretty conservative timing, I didn't really bet on having the car drive out any real difference than when it drove in. Sadly due to a miscommunication and laptop fun and games (and almost bricking the dongle, prayers and firmware updates indeed), I ended up using HP Tuner credits to licence the car that was already licenced. So in the end my laptop was used. It turns out my butt dyno is still well calibrated after all this time. The 325kw was on 74% Ethanol, the 313kw line was on 98. The other line is the 'before' line which was 281kw. While the numbers are pretty low, they're pretty in line with what you'd expect. Even if US dynos bump the whole result up about 50KW, gaining 10-15% is similar gains.  The curve of the cam is pretty much spot on with what was discussed as well. All this said, it still feels bad to not see the number you secretly want to see. Even if the car drove great beforehand, and I knew pretty confidently the car would drive out much the same way it drove in due to the nature of a wellish dialled in LS1 not gaining much if anything at all from being tuned from where it was. As expected, the car isn't particularly sensitive to running it at anywhere between 12.0 and 13.0 - And the initial timing at 20deg and 12.0 made 308KW. So 3 degrees of timing, and leaning it out to 12.7 for 5kw, anything above stopped giving any benefit until E85 (which has an additional 2 deg as before). Car itself behaved entirely fine. I found out that 100C = 1.15V! IAT at about 7pm was 19C. I might mess with the bonnet mounting.. but given the REO NEEDS TO BE CHOPPED TO FIT A GTR BAR this is possibly something I may leave gathering (more) dust until it returns to paint jail.
    • It sounds farrrrrrr too cold at your place Duncan... Here I was thinking our 10 degrees overnight is getting cold...
    • oh yeah, reminded this morning....bin lids frozen shut too
    • In my case not, because of total reno. But yeah.
×
×
  • Create New...