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87 951 VEMS Install

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Old 09-03-2019, 11:33 AM
  #466  
czentner
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Hi,

I am using Siemens Deka 80 lbs injectors.

Is this the table you wanted?

Old 09-03-2019, 11:37 AM
  #467  
DLS
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Yes, thank you.
How much boost is you running?
Regular fuel or e85?
Old 09-03-2019, 11:39 AM
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15 lbs boost, 94 octane regular fuel.
Old 09-03-2019, 11:52 AM
  #469  
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Ok.
I run 980cc injectors (93lbs) and plan on running 1,2 bar (18lbs) aiming for 1,4-1,5bar
Next year i will switch to e85.
Old 09-05-2019, 01:02 AM
  #470  
shortyboy
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Originally Posted by czentner
Well, I finally got my car running right. My issue after getting VEMS installed and running around doing the autotune for 60 ish miles was that I was fouling plugs and the car didn't seem to pull as hard as it used to with the Vitesse piggyback (my car also has a vitesse stage 3 turbo). Since I don't know how to tune and didn't want to blow something up. I took it to a dyno tuner.

Here's the first dyno pull using the basemap that shipped with it + 60 miles of autotune:



Not too impressive.

However, after a dozen or so pulls, adjusting the fuel and ignition curves, this is what I ended up with:



I am very happy with these numbers and the car pulls harder than it ever has. In fact, the car has never run this good - idle is now dialed in and rock solid and performance off boost is much better than it ever was before I put in VEMS.

So - I plan to just enjoy the car for the fall then this winter put in the wasted spark system. I'd also like to get A/C system working. Does anyone have settings/instructions for these two things?

Thanks.
What are your others mods on your car? Do you min sharing your configuration file to compare?
Old 09-05-2019, 01:06 AM
  #471  
shortyboy
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Originally Posted by Cyberpunky
It was pre existing and was hoping WS might solve it but no such luck
Unfortunate you are still having the same problem. I've read online a few people experiencing a hard reset of the vems ecu during cranking. Primarily a voltage drop issue and that vems is sensitive to voltage drops. Basically the solution was to put a capacitor in parallel with vems ecu to compensate for the voltage drop.
Old 09-05-2019, 07:21 AM
  #472  
Cyberpunky
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Originally Posted by shortyboy
Unfortunate you are still having the same problem. I've read online a few people experiencing a hard reset of the vems ecu during cranking. Primarily a voltage drop issue and that vems is sensitive to voltage drops. Basically the solution was to put a capacitor in parallel with vems ecu to compensate for the voltage drop.
That makes sense. I might try googling and see if I can find out what someone who solved it did. Cheers
Old 09-05-2019, 09:52 AM
  #473  
czentner
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What are your others mods on your car? Do you min sharing your configuration file to compare?
Sure no problem - config attached.

Car is not very modified - Vitesse stage 3 turbo, manual boost control set to 15 psi, now VEMS...that is pretty much it.
Attached Files
Old 09-05-2019, 04:48 PM
  #474  
shortyboy
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Originally Posted by Cyberpunky
That makes sense. I might try googling and see if I can find out what someone who solved it did. Cheers
Heres the thread i found

http://www.vemssupport.com/forum/ind....html#msg22154
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Old 09-05-2019, 04:50 PM
  #475  
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Originally Posted by czentner
Sure no problem - config attached.

Car is not very modified - Vitesse stage 3 turbo, manual boost control set to 15 psi, now VEMS...that is pretty much it.
Much Appreciated. Just want to compare ignition timing and VE tables. Looking to improve off boost throttle response. Thanks again
Old 09-06-2019, 06:00 AM
  #476  
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Originally Posted by czentner
Hi,

I am using Siemens Deka 80 lbs injectors.

Is this the table you wanted?

Not so much of a change , did that little make almost 100hp?
At 200kpa line you have raised the ignition by 0,5-1 degree only and at the lower 160 and 130 kpa lines you have lowered the ignition a little ?
Nothing changed at all below 100kpa line.
You skipped the 250kpa line i think
Old 09-06-2019, 07:21 PM
  #477  
SamGrant951
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This is my current table, pretty similar to czentner from a quick glance. 2.5L / T04E .57, ~18psi.


Last edited by SamGrant951; 09-06-2019 at 07:42 PM.
Old 09-07-2019, 04:35 AM
  #478  
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SamGrant951

What fuel?
Any more mods to the engine?
Do you have a max egt reading?

Last edited by DLS; 09-07-2019 at 05:48 AM.
Old 09-07-2019, 05:50 AM
  #479  
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czentner

Do you have a max egt reading?
Old 09-07-2019, 09:15 AM
  #480  
SamGrant951
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Originally Posted by DLS
SamGrant951

What fuel?
Any more mods to the engine?
Do you have a max egt reading?
93, stock internals, 3" test-pipe/exhaust, tial wg, manual mbc, #80 siemens injectors. I have an EGT sensor hooked up but I haven't logged anything...I could do that at some point.


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