1
Configuration / Re: Crank and after start enrichment suggestions
« Last post by MWfire on December 18, 2018, 01:41:47 pm »you need around 500% crank at 0c and 600% at -20C
Enabling enthusiasts and racers to extract the potential from their engines
News:
When asking for technical help at the very least let us know the version of firmware you are running.
Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
Recent Posts
2
Configuration / Crank and after start enrichment suggestions
« Last post by Morris400 on December 17, 2018, 10:15:30 pm »looking for some ideas on my enrichments for my 94 Audi S4 AAN. having trouble getting it to start, it takes 3 time before it will stay running and maitain idle. it starts up then dies the first 2 times, then the 3rd time its fine.
i cant upload my config file for some reason, im guessing i need to post more.
Crank enrichment:
-30c (300)
0c (200)
20c (138)
80c (125)
Afterstart Enrichment
-30c (200)
0c (150)
20c (125)
80c (100)
Should i rasie these up or are they too high as is?
Kenny
i cant upload my config file for some reason, im guessing i need to post more.
Crank enrichment:
-30c (300)
0c (200)
20c (138)
80c (125)
Afterstart Enrichment
-30c (200)
0c (150)
20c (125)
80c (100)
Should i rasie these up or are they too high as is?
Kenny
3
General Discussion / Re: porsche 964 tpc supercharged vems ecu,
« Last post by gunni on December 09, 2018, 06:28:03 pm »Use the Vemstune sharing center to share files
4
General Discussion / Re: porsche 964 tpc supercharged vems ecu,
« Last post by mohamad sabehtaayon on December 08, 2018, 03:37:42 pm »vacuum i read on Idle is 70 PSI, on deceleration minimum is 50 psi!!! i will check the FPR first easy work 
5
General Discussion / Re: porsche 964 tpc supercharged vems ecu,
« Last post by mohamad sabehtaayon on December 08, 2018, 06:06:06 am »can i attach file here? or pls send me ur email
thx a lot
thx a lot
6
General Discussion / Re: porsche 964 tpc supercharged vems ecu,
« Last post by gunni on December 07, 2018, 11:21:48 pm »Hi.
Please provide a log of the occurance,
I don´t know what you mean by -0.5 ,
you FPR could only affect vacuum readings if it was leaking air pressure
Please provide a log of the occurance,
I don´t know what you mean by -0.5 ,
you FPR could only affect vacuum readings if it was leaking air pressure
7
General Discussion / porsche 964 tpc supercharged vems ecu,
« Last post by mohamad sabehtaayon on December 07, 2018, 09:26:50 pm »i ve done a nice project, i installed a tpc supercharger on my 964 1991, controlled by vems ecu,
all was going good, but suddely i realized that the mixture is too rich on idle, and that on deceleration from high rpm, the mixture is rich (10) i realized that the vaccum is not going less than -0.5 which is strange, i checked all vaccum lines there is no leak, is it possible to be fpr? does it affect the vaccum?
this problem happened suddenly!
i will be glad to hear from u guys
all was going good, but suddely i realized that the mixture is too rich on idle, and that on deceleration from high rpm, the mixture is rich (10) i realized that the vaccum is not going less than -0.5 which is strange, i checked all vaccum lines there is no leak, is it possible to be fpr? does it affect the vaccum?
this problem happened suddenly!
i will be glad to hear from u guys
8
Configuration / Re: Anomaly with cold starts
« Last post by Kamuto on December 02, 2018, 06:07:41 am »check by disconecting sensors, btw, bmw should have 12v on cam and crank, not 5v
9
Configuration / Anomaly with cold starts
« Last post by H.E on December 01, 2018, 11:40:17 pm »Hi all,
I have a genboard V3.8 that is running a hybrid engine of BMW M52TUB28 (block), M52(vanos and cams) and M50 (intake).
I'm having problems to start the engine after it has been standing for a while. There is a correlation between the magnitude of the problem and the time it has been standing.
1. I turn off the car.
2. I turn on the ignition after 12hours. The 5v output is fluctuating around 2-3V, so MAP, TPS and Hall crank position sensors are affected.
3. I wait for about 30sec to 2min. The 5v output jumps to normal and fuel pump primes once more. (Recently it has got a lot colder, from +10 to -5 and either this or maybe just time has made it recently a lot worse). Now if I try to start the engine, everything seems to be in order, but the car struggles to start.
4. I now wait again for about 1-2+ minutes and the car starts perfectly.
There are no log differences in cranking after the 5v output gets to normal.
I do not have a oscilloscope to verify what is causing the starting problem after the 5v jumps to normal, but maybe someone has ideas to check?
I bought a V3.8 genboard and the plug with casing. I'm using VEMS 250 external 3-wire MAP sensor.
Thanks for all the ideas!
I have a genboard V3.8 that is running a hybrid engine of BMW M52TUB28 (block), M52(vanos and cams) and M50 (intake).
I'm having problems to start the engine after it has been standing for a while. There is a correlation between the magnitude of the problem and the time it has been standing.
1. I turn off the car.
2. I turn on the ignition after 12hours. The 5v output is fluctuating around 2-3V, so MAP, TPS and Hall crank position sensors are affected.
3. I wait for about 30sec to 2min. The 5v output jumps to normal and fuel pump primes once more. (Recently it has got a lot colder, from +10 to -5 and either this or maybe just time has made it recently a lot worse). Now if I try to start the engine, everything seems to be in order, but the car struggles to start.
4. I now wait again for about 1-2+ minutes and the car starts perfectly.
There are no log differences in cranking after the 5v output gets to normal.
I do not have a oscilloscope to verify what is causing the starting problem after the 5v jumps to normal, but maybe someone has ideas to check?
I bought a V3.8 genboard and the plug with casing. I'm using VEMS 250 external 3-wire MAP sensor.
Thanks for all the ideas!
10
Fuel Injection / Re: Correct settings for staged injectors - i'm asking for help
« Last post by Kamuto on December 01, 2018, 04:56:22 pm »I have an impression that the staged injectors mode does not work. I have changed the activation parameters of the staged injectors so that they are constantly active, i.e. RPM = 600 TPS = 0 MAP = 20 and has no effect. The injection time has not decreased twice, I also removed the plugs from the injectors to make sure they do not work - they do not work. I made a firmware upgrade from version 1.2.11 to version 1.2.38 - no effect.it works without any problems
Is there anyone who has successfully launched staged injection?