Jump to content
SAU Community

Recommended Posts

  • Replies 765
  • Created
  • Last Reply

Top Posters In This Topic

To use this on an RB20det, is the wiring harness swap the same as the 25 one, or are there other wires that need changed around?

the rb20 requires more swaps, but all ultimates have the instructions in them and the wiring diagram is idiot proof so just compare RB20 to the loom you are buying in the manual.

I got my EMU today.The good thing: Its version E. Serial number 9027 or something.

The bad: My instruction manuals and install cd got stolen or lost.

I got the instructions already. Found the where to get the software also.

Now some questions.

In the manual it says that I can either run Knock1/Knock2 or water temp/iar temp. So this means that I wouldn't be able to datalog all of them at once, right ?

Another thing. What about the relay switching option in EMU. U can turn on the electric radiator fans with it, no ? And u can have the VCT if u got rb25 running of rb20 ecu, right ?

Edited by robots
  • 2 weeks later...

God damn the day I installed the EMU !!!))

First day I had a hangover and little sleep, installed the emanage. According to the manual ! Engine didn't start. Ripped the baby out, still didn't start. No spark!

2-nd day. Traced the problem - faulty igniter. Changed to a working one. Wow, we got spark now and engine starts.

Did some driving with Innovative LM-1 wideband, good afrs at idle, low load/cruise. around 14-14.7. Nothing under 13 for sure. Hard to look at the thing when driving.

Plugged the emu again. Haha, this time I noticed, that yesterday I didn't even look at the ignition channels chart for the inline-6. Damn ! Thats what fried the igniter.

Engine started, lumpy idle. And damn those afrs! 10-11 on idle ? Wtf ?

Did some driving. Cruise - 10-11. When I step on it it gets better - 13-12. even 14 some times. What is going on ?

I did choose the rb20det and wire it in according to the manual this time ! Didn't give me any errors.

Need help !

Anyone ?

URAS, looking forward to your insight. ))

Edited by robots

Ok. I went to the basement car park to play around with e-manage.

What did I find out.

Started from scratch, like choose the vehicle type etc, like I didn't touch anything, exported the data to EMU, started the car. Was rich. Then I tried to play with I/J map. I subtracted 0.05% or 0.02ms from the revs it was idling at and wow afrs rocketed to 14-14.7/15. I was like yeah, cool, but do I really have to subtract 0.05 from all the load points ? I played around with it and went for a quick 1st gear drive around the basement. Still runs rich everywhere.

I went back to my parking space. Then I opened up the choose your vehicle type menu.

Everything was spot on, accept when I got to the I/J setup. It said I got 260cc inj. I believed that rb20det got 270cc inj. WTF, Greddy ? I changed the inj. size to 270, like I was upgrading them. Left the stock one: 260cc, and put the new one - 270cc. And afrs turned to normal again! Haha.

I went for a quick 1st gear drive with dataloger on again. Seemed to run beautifully, just like stock. Afrs also same as with stock ecu. I was happy.

Then I opened up the throttle a bit and bam ! I got new rev-limiter/or rev cut at around 4-5k rpm ! Car just splutters. I didn't believe my eyes and tried again. Same thing. Went to park the car. I tried to rev it at idle - revs freely to redline on light throttle. As soon as I open the throttle more it cuts the revs at 4-5k rpm.

I didn't have time to stay, so I decided to leave it as it is for now. I got back my stock afrs at idle and cruise and it idles smoothly now. Just need to find out what is causing the rev-cut now !

Need some help, guys !

Thanks!

I will upload a datalog later.

EMU_DATALOG.zip

Edited by robots

looks like you're hitting r&r with 3.7v @ 3500rpm

in the boost limiter cut settings, put 3.7v from 3500-4500 and see if that solves anything. it may do it again at around 5500 but we'll deal with that if it comes up. keep an ear out for pinging.

edit: i made you a map for you to try. PLEASE keep an ear out for ping, log data and report back.

p.s. i take no responsiblity if you blow your motor because of this, but i didnt do much to it.

270cc_rb20det_TRY.zip

Edited by SECURITY

Thnx, Security. I will try it today later or tomorrow. U just clamped the AFM voltage, right ?

Today I swapped the knock1 channel to read water temp. Now I can do auto-target map and afr datalogging. I will datalog all the stuff and post it here.

Seems so strange. When I put it back to 260cc it doesn't have that R&R. It just runs rich. I will leave all my data here, see if we can get around this problem. So other rb20det guys won't have to hurt themselves so much )).

I do have a frontface plenum, but I doubt its that. It was all good with factory ECU, no R&R. Only rb25 guys know about this R&R word, not rb20s :banana: Haha.

yeah mate, i only clamped afm voltage. with the front facing plenum you may be getting more flow which may max out a normal afm. i mean, another standard rb20 may not see those afm voltages at those rpm because of the usual gear + usual setups. you're running more flow on the standard AFM (im guessing) so maybe it is causing some kind of r&r?? thats just a guess though, the map that i made you should test my theory.

I tried to do some datalogging again. With my LM-1 and Water temp sensor working this time.

Only left 1 knock sensor (knock2).

I see some Knock reading of 4% highest with 270cc inj, and up to 11% with 260cc and running very rich.

When I lift the throttle at 260cc it just continues to backfire until drops to idle. There is no R&R issue with 260cc. Only with 270cc.

Security provided me with the map, with clamped AFM voltages at certain RPM (aka Boost CUT). As u can see it didn't help a lot, but I could over rev the cut and go to redline(go pust the cut, by keeping the throttle depressed longer.)

I can't really understand whats going on. Maybe I should clamp more voltages, datalog it under slow rev up, and add fuel where necessary to avoid lean afrs and knock ?

Appreciate all the feedback!

EMU_DATALOGwithVoltageClampAndAFRs.zip

Edited by robots

well then obviously the afm clamp is working because you've completely overcome the last problem, its just moved to a higher rpm which you couldn't have seen because you couldnt get there!

try this one, ive added more voltage clamp:

270cc_rb20det_SECURITY_TRY_2____more_voltage_clamp.zip

Thanks, Joe ! I will give it a go today. Will let you know how it went.

-------------------------------------------------------------------------------

Ok. It didn't really change much. I even tried to clamp 3.7v through all the rev range. And still that R&R/Miss. Maybe its something different ?

I've included AFRs/Knock this time.

Also I got my EMU reading 1point higher than LM-1. LM-1 shows 14, EMU - 15. Did I get my ground wrong or what ? It wasn't like this the first time I connected it.

I think something is a bit wrong with my setup. The only thing I can think of, is I wired EMU ground to the same wire as EMU inj. ground. As id didn't want to turn on(no lights) when connected to factory ECU ground.

Damn. With 260cc I have no R&R problems, accept running rich. ((

EMU_DATALOGwithBoostCut10.01.2008.zip

Edited by robots

cant you use the 260cc settings but by using the A/F map settings?

like, you'll be getting the emu to tune your injector map to suit your preferred a/f's at every rpm vs. afm point.

Joe, check out my thread at emanage forums. It seems that the problem is deeper than I thought. In inj. drop outs. Need to ground them better.

Can you pls send me your maps to work out my settings ?

Have problems starting the car with 270cc inj. Put back 260cc and fires flawlessly. I will try to do a couple of power runs with 260cc inj. settings. Log A/FRs, Knock, Water temp everything. And see if I will be able to lean the tune out a bit.

Will see how it works.

Updated my EMU with the newest firmware and software. Went to do some powerruns and datalog.

Idle AFRS were even worse than before - 9-10.

Check out the logs, guys. Some really crazy things there ))

Thanks for all the feedback !

EMU_Datalogs12.01.2008.zip

Yahoo ! Some good news ! I've reset the EMU. Like I choose the engine, all the stuff. Done everything from scratch ! And ohh my god. AFRs went to normal at idle ! Didn't mess with inj. left it like Greddy programmed.

Gave it some rev - no splutter. Gave it open throttle rev on idle - no splutter ! Haha, was I happy ) Went for a drive with datalogging. No more splutter in 1,2 gear )) 3rd gear had some splutter in 140km/h range. But it wasn't as violent. And afrs didn't drop. Maybe I had little fuel in the fuel tank or it still my inj. earth problem, but it was much better than before )) Haha. I'm still smiling now ))

Still need to source the inj. drop out problem.

:P

EMU_Datalogs13.01.2008.zip

What I've noticed is that Greddy have changed the RB20 inj. lag time in the latest update(2.16). It was 0.70ms before, which I think is right. And now its 0.

still confused ))

Edited by robots

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

    • So, I started this repair and got as far as "fixing" the holes with some fibreglass. God all those years working on boats came back quickly. I decided I'd reach out to some rust guys just to see what they would say about it. I came across a guy about 40 mins away and went to see him. He said the windscreen needs to come out, that there might be some more bits around the windscreen and he'd quote them at the time. But his quote was $300 to remove and replace windscreen and $3k for the damage he can see. He said he could respray the roof for $1200 and the bonnet for another $800 (somebody has previously rattle canned it, its horrendous). This is $5300 + any small additional bits. It's a lot, I get that and the name of one of my fave youtube channels 'Not Economically Viable' comes to mind.  I'm not being financially rational, but I've taken him up on the quote. He's opening a new shop in November with more room, so we're waiting for that. I'll leave the currently missing headliner out until then. I'm looking forward to it being fixed and having the paint looking nice again (lots of clear coat issues on the roof too). / flame suit on.
    • Oh and some up-and-comings; New rear drivers wheel bearing. I'll do that this weekend while the diff is out. The car is already up and the d/c axles and missing exhaust will help with space. This is the last bearing for me to do and I've been dragging my feet on it. I also have some new EBC blue stuff pads for the car and some new brake fluid. I haven't ever flushed the fluid in this car and looking forward to it. I have 600 degree fluid to put in. Not exactly "race fluid" but better than the typical stuff I have been using.
    • A proper clutch/plate type mechanical diff with quite a lot of pre-load and high locking % is better for drifting. Much more consistent in its behaviour. A helical can be annoyingly vague and inconsistent in how it responds under the sorts of abuse found in drifting.
    • Some updates here. I pulled the entire interior out, minus some trim to respray the seats with Colourlock dye. It turned out really nice though I accidentally let the dog in the car after and she scratched up the front seat.  This is what it looked like before, the colour was just washing out everywhere but thankfully the leather was in good nic. Then after the respray   And after the bloody dog jumped in The headliner is out waiting to be retrimmed, but it will stay out now until Nov - see why below. I replaced the stereo/headunit with a period-styled Android headunit. I have no after pics, but I'll get some. This is because of the missing pixels. I tried to fix this twice with replacement ribbon cables but couldn't. Also the bluetooth interface I'd bought for this was crap. Then there's the rusty roof. Pics and info in this other thread. I have decided to get this repaired professionally, but I'll update that thread. This is why the headliner will stay out for now. I'll be getting the roof and bonnet resprayed at the same time the rust is fixed. I also had an interesting issue with my drivers door lock.  For a small period I was having issues getting any 12v power to the car - I mean *any*. It would have no dash lights, nothing. It happened while I was at the shops and I couldn't get in the car. So, we had 2 problems. The most pressing here is that I was locked out. I have only a single physical key hole on the car, the drivers door and no amount of turning would unlock the car. Surely it doesn't need power for this? The second issue is why am I losing all power periodically, The battery isn't dead, its almost like the battery isn't even there. Two issues that were surprisingly easy to fix. You fellow BMW over-engineering lovers will appreciate this. The lock in the door has 5 states; mechanical lock, electric lock, neutral, electric unlock, mechanical unlock achieved at -90 degrees, -45 degrees, 0 degrees, 45 degrees and 90 degrees. Although, the unlock is towards the front of the car, so opposite for LHD countries. Sticking the key in and turning 45 left or right is what is used 99% of the time. It activates the central locking etc. 90 degrees is for dead battery access and, obvs, only un/locks the one door. But because the mechanical lock is never used and is 27 years old, it seizes up. I was totally unable to turn the key far enough to get to the mechanical unlock (At the time of locking myself out, I didn't even know this was a thing). I eventually did it with some vicegrips and teflon spray.  I made a quick vid for other E39 peeps.   The battery issue is totally new to me also - It wasn't making sufficient contact between the post and the terminal. The terminal was bolted on tight, but the car wouldn't have power. After checking the battery with my multimeter I accidentally contacted the terminal and the battery post and the car got power. The battery was only a few years old and in good condition. I cleaned the post and the terminal with a wire brush, bolted it back on tight and never had the issue again. I'm still surprised that despite having solid contact it didn't work. Also, the car was getting Warragamba sized pools of water in the back when it rained. My initial concern was another rust problem. But when I went out on Weds while it was raining and while I had no headliner in I could see a steady stream of water coming through the roof mounted aerial. As this aerial is for the (now removed) car phone I pulled it out and whacked a blanking grommet in the hole. It seems fine now. I'm thinking I might get the hole permanently filled when the rust is fixed. Moving forward and things in progress; The tailgate needs some attention. I have taken all the trim off to clean it all and address some small rust spots. I have partially done all of this but I'll finish it up hopefully this weekend. As all the trim are now entirely devoid of trim clips I have bought a heap of strong velcro and I'm hoping it does a good enough job as any of this trim in good condition is super expensive and usually in Europe as we dont have many of the wagons here. Suspension and brakes!!! This is exciting. In the front; New control arms New sway bar links New lower Eibach springs (the only modification I'm planning on this car) M Sport shocks (these came with the car and will replace the longer shocks in the car) New top mounts Used 540i calipers (stock brakes suck!) New 540i disks and pads (22x296 mm for 528 and 30x334 mm for 540i) New front wheel bearings (thank all that is holy for bolt on bearings!) Annnnd in the back; New control arms New sway bar links Adjustable air suspension arms (fool the car into what the current height is so the self levelling suspension can match the new front ride height) New ball joints I'll also be doing a brake fluid flush while I'm in there. I'm planning on switching the car over to the 16's that came with it so I can clean up and respray the M Sport 17's. They've lost a lot of colour over the years and have some gutter rash. None of this will start until the E90 is back.
    • You mean you will regret it for drifting duties? I don't quite follow.
×
×
  • Create New...