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

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.

Yes, please keep us updated!

Well I have wasted spark in but forgot I need different leads, so waiting to hear back from Peep with a model number so I can get them ordered. Going to take a few days to source down here

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.

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.

Peep said that coil works well in the 951 at 3.0 ms dwell, and it does work well for mine.

Here are my settings, using the factory cycling valve wires for the aftermarket MAC solenoid. Boost level is entirely dependent on your particular turbocharger setup, what type of fuel you are using, if you have enough fuel flow capability to support it, if you are brave enough, etc.
https://cimg8.ibsrv.net/gimg/rennlis...df012e4c9.jpeg

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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PID boost control is a bit confusing if you don't know how it works, and can be time-consuming to set up. HP Academy has a good course about it-----but if you are able to cheat and fill in the values with some that are known to work, then it works out well :)

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.

changed dwell to 3.01 ms but didn't effect starting although on a good start its so smooth

Did the "good start, bad start" symptom start after installing the wasted spark coil, or was it preexisting?

It was pre existing and was hoping WS might solve it but no such luck

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:

https://cimg2.ibsrv.net/gimg/rennlis...9a33f47a77.png

Not too impressive.

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

https://cimg5.ibsrv.net/gimg/rennlis...7408deee07.png

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.