Author Topic: BMW E30 M20 VEMS,turbo  (Read 102567 times)

Offline Sale335i

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Re: BMW E30 M20 VEMS,turbo
« Reply #75 on: January 17, 2011, 03:57:51 am »
Gox,updates? :)

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #76 on: January 18, 2011, 10:22:48 pm »
Curently rebuilding the engine after 3 years of drifting :)
Pics soon,got a lot of work so i cant do anything on my car right now.
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #77 on: April 12, 2011, 11:25:26 pm »
I just updated the firmware to 1.1.70,engine starts and runs just fine...
I didnt selected the AIR and CLT patch files when i was uploading firmware...is there any way i can select them again?
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline mattias

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Re: BMW E30 M20 VEMS,turbo
« Reply #78 on: April 12, 2011, 11:30:03 pm »
You have to upload a new firmware again, this time - try 1.1.88 and use only the latest VemsTune  : www.vems.hu/vt

If you experience "lag" and display problems with gauges, there was a mistake with a "rtMinRefreshInterval" in config/v3gui.cfg file, just edit and replace with a high enough number. It's milliseconds between redraw, 200 would be 5 times/second.

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #79 on: April 12, 2011, 11:36:43 pm »
i just find that out in some other topic :) think is that i first uploaded 1.1.88,and i saw that i was did a mistake and bring it back to 1.1.70 lol
Ok,i`ll put it back to 1.1.88,my cfg will work without problems?
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #80 on: April 12, 2011, 11:41:13 pm »
btw,i`m using the last version,it did crashed one or two times under Win7...
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline mattias

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Re: BMW E30 M20 VEMS,turbo
« Reply #81 on: April 12, 2011, 11:45:21 pm »
Last?  is from March 24.

Press the verify config button to check for warnings/errors after the upgrade. There shouldn't be too much difference.

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #82 on: April 13, 2011, 12:29:17 am »
Yes,because i finished car 5 days ago and decided to get rid of the old 1.0.73.This is new laptop so i didnt had any software installed....

Ok tnx,i`ll see how does it work and post logs.
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #83 on: April 13, 2011, 05:07:29 pm »
After installing 1.1.88 and fixing the reported config errors (from ValidateConfig) i couldnt start the car.It is just cranking,rpm reading is fine,everything looks normal,but no sign of starting....I have a small cranking log.
I switched back to 1.1.70 and started the car just fine with same config.

One more odd thing is that this "new" (new piston rings,better condition pistons,rebuilt head,honed block) need much less fuel then the old one was asking at 1.0.73.For example @ idle i had VE values arround 80-82 and it was idling @ lambda 0.95,now i need arround 62-65 to idle @ lambda 1.0.Is there any change in calculating VE in new firmwares?

Here is the log:
http://www.vems.hu/files/MembersPage/MilanaPerisic/v3.3_n001036-2011.04.13-14.23.30.vemslog
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline gunni

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Re: BMW E30 M20 VEMS,turbo
« Reply #84 on: April 13, 2011, 07:24:32 pm »
Check your PW and compare, you´ll find the anwer there

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #85 on: May 04, 2011, 08:21:43 am »
After engine rebuild and firmware update from 1.0.73 to 1.1.70 my VE is completely different.Old engine was requesting more and more fuel up to 7000rpm,now new rebuilt engine is haveing high VE values only from ~3000rpm to 5000rpm after that i need to lower the VE values...
My injectors where never maxed out,now i`m seeing some creazy duty cycle numbers that gives me some headaches...I see that my alternator is haveing problems with voltage under boost,i will try to put another one,is it possible thats the reason why i`m seeing high duty cycle numbers? I will check FPR also....
How do i get rid of the lean spots just after shifting when i press wot instantly?

Here is the log to check what is going on...

http://www.vems.hu/files/MembersPage/MilanaPerisic/v3.3_n001036-2011.05.04-01.29.56.vemslog
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline mattias

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Re: BMW E30 M20 VEMS,turbo
« Reply #86 on: May 04, 2011, 08:53:58 am »
Update to 1.1.88. With your last attempt to upgrade you used a too old VemsTune version and the prohibit/safety mode (dialog "ECU calibrations") prevented any outputs from working, and you had a few glaring errors in the configuration file, like TPS lookup for ignition/lambda, injector trim tables all wrong, etc. Make sure you're using the latest VemsTune when upgrading this: www.vems.hu/vt
Post here when you get into trouble and we can try to get you going on the more recent firmware.
« Last Edit: May 04, 2011, 01:13:32 pm by mattias »

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #87 on: May 04, 2011, 09:34:53 am »
I have a drift event starting at Friday,so i will stay it on this just for now,i will sort the ve a little bit more and go like this,then i will upgrade and see whats going on.Tnx ;)
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline gox

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Re: BMW E30 M20 VEMS,turbo
« Reply #88 on: June 18, 2011, 04:39:34 pm »
Last weekend i visited Zagreb,Croatia for an drift event,so i left my car there to be dyno tuned ;)
I have problems with too much oil burning what makes spark plugs die after one day of drifting :( Will open the engine to see what is the problem.
Rpm limiter was set at 6000rpm since i couldnt get rid of the overfueling that was happening above 6000rpm,i didnt have too much time to play with it so i set it to 6000rpm and it stayed that way :/

This is dyno graph @ 1bar with stupid manual boost control,spring is 0.8bar
First run measure 280hp and then one spark plug die,after putting new spark plugs power was 60hp more  :o

Final power output:



This is torque graph:




Special thanks goes to MWfire for tuning the car,update to 1.1.88,fixing all of the cranking,warmap,acc enriech. and other values :) Car now starts right away and works much better :)
Another thanks goes to Mattias who helped me with the ignition map (somewhere around 3years ago,or something like that) it was hit in bulls-eye ;)

Since the power is still growing after 6000rpm (engines has Schrick camshaft) i will move rpm limiter to 7000rpms
E30 2.7 - VEMS,KKK K27.2,Schrick,1bar

Offline mattias

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Re: BMW E30 M20 VEMS,turbo
« Reply #89 on: June 19, 2011, 02:04:30 pm »
What "overfueling" are you talking about above 6000 rpm?

It makes decent power at low boost! :)