87 951 VEMS Install
#451
Three Wheelin'
Cheers Wayne. So going wasted spark should sort ,my car too I hope. I didn't even think about it till now but I think I am running a MSD Blaster coil, so maybe that is my issue. Id love to be able to just start her and get a good start every time. I am hoping to finally get my wasted spark in, in next week or so. I have a bunch of stuff I want to do at same time as audio amp is in front of VEMS and a PITA to get around, so want to do everything at once
#452
Three Wheelin'
Just fyi, for anyone wanting to use a bluetooth screen but don't want to use a tablet, a double din unit running android will work. It won't have tuning capabilities, but you can have gauges of your choosing show while driving. I will be replacing my gagues in the centre console with this eventually.
#453
Rennlist Member
Cheers Wayne. So going wasted spark should sort ,my car too I hope. I didn't even think about it till now but I think I am running a MSD Blaster coil, so maybe that is my issue. Id love to be able to just start her and get a good start every time. I am hoping to finally get my wasted spark in, in next week or so. I have a bunch of stuff I want to do at same time as audio amp is in front of VEMS and a PITA to get around, so want to do everything at once
#454
Three Wheelin'
#455
Three Wheelin'
Well I got leads custom made and got her fired up today. All was good but then I got a bad start. Definitely better as started her a lot without issue but then I got one.
#456
Rennlist Member
For those with boost control,
I picked up a solenoid and in the process of wiring it in. Care to share a screenshot of your settings and values? Also boost levels. I went on the vems support page for some information but its a bit difficult to understand.
The following users liked this post:
Cyberpunky (08-09-2019)
The following users liked this post:
Cyberpunky (08-09-2019)
#458
Three Wheelin'
#459
Rennlist Member
Try changing dwell settings in ignition settings.
For those with boost control,
I picked up a solenoid and in the process of wiring it in. Care to share a screenshot of your settings and values? Also boost levels. I went on the vems support page for some information but its a bit difficult to understand.
For those with boost control,
I picked up a solenoid and in the process of wiring it in. Care to share a screenshot of your settings and values? Also boost levels. I went on the vems support page for some information but its a bit difficult to understand.
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#460
Three Wheelin'
I agree about difficulty in understanding what's going on. From what I can gather the boost control in VEMS is controlled by the software internally and is "learned" IDK is the correct?? I It's hard to see what's going on when driving around boosting and watching the road and the gauges. I finally gave up and put a Turbosmart e boost controller in the car.
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I have found that the VEMS system works well and "learns" the boost curve quickly at the settings that Peep suggested. There was no driving around and watching anything, I could tell that it worked well because the boost came on fast and hard and double-checking logs afterward showed that it was able to closely follow my pre-entered boost curve after 4-5 pulls. The only downside of the VEMS system is unless you wire in an external switch, you have top pull out the laptop to change boost settings.
The Turbosmart system also likely uses PID (or at least PI) controls to achieve the user's boost target, but has pre-programmed parameters from the factory.
#463
Three Wheelin'
#464
Advanced
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.
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.
#465
I think the base map is very conservative.
Do you mind sharing your ignition map?
What injectors do you use?
It feels like my car don't pull as strong as before i switched to vems so i think i need to adjust my ignition map also.
Do you mind sharing your ignition map?
What injectors do you use?
It feels like my car don't pull as strong as before i switched to vems so i think i need to adjust my ignition map also.