Good that this post goes up, I'm still thinking on buying VEMS for a 20v project.
However, standalone EFI aren't common in my area and the only tuners around me seems to be MS(and Sybele)-only. Besides those "lel i kno not wat iz VMES, buy ms", I had a more neutral answer which was "As long as it looks like a decent standalone, we could manage to tune it", so here comes my question :
How decent must be a "MS-tuner" to get along with VEMS ?
When I made my decision it came down to a few things.
A local tuner who's very reputable dismissed MS3x because it has an unbearable amount of signal noise.
VEMS has great community support. You can easily get a base tune at home and be safe to drive to the dyno.
All the dyno tuner has to do is manage air:fuel:spark. Period. That's it. What's going to complicate things, is, if he's used to Haltech or Motec or MegaSquirt, etc, then he's going to have to adapt to the program/interface of the EMS you choose.
So you're paying for him to learn on the fly. If your base tune is solid, and he's a quick learner, one would hope it won't be too costly.
Another thing to consider is, see if whatever EMS you choose has a dyno in driving distance that you can go to. Get a base tune at home, make sure it seems safe/do necessary tweaks yourself, and drive to the dyno.
Since I bought VEMS, MaxxECU has come on pretty big in Europe. Lots of good features and people seem to like it as a platform. To do it over again, I'd still get VEMS, but that's because there is lots more "regional" support for it compared to others.
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|| 2010 Golf Sportwagen TDI /// #farmenwagen || 2002 Dodge Ram 2500 24vt 4x4 #bertancummins || 1992 80 quattro 20v /// Eventual AAN'd Winter Sled || 1990 Coupe quattro /// Because Racecar