4 holes are much easier to install, flow more gas, switch over reliably, don't switch back for no reason, and the float valve doesn't rattle against the side of the tank in corners. I especially like the inference that it depends, somehow, who fits it. Yeah, ok 
I guess the 4 hole was invented for er, what reason? Oh I know, better safety, better reliability, and economics. All 4 components in one valve means a failure of one means replacement of all. A far more sturdy construction on the outside of the tank rather than the side of a pokey little hole in the middle that impossible to see into and around corners.
....Ahem, cough cough <sarcasm mode off> Apologies, must be having a bad day. 
With a suitably designed multi valve, properly installed, I have had none of the issues you claim to plague single hole tanks. If I were installing a kit into a Vxr,then perhaps you need high end components. But for a run of the mill Omega it seems like overkill. Perhaps the stag kits are poorly designed? After all it is a budget kit. Personally I would put money into better quality injectors than a 4 hole tank, which by the way is significantly more expensive. Well at least the ones I looked at were.
Edited to add: This is on a standard cylinder. The toroidal tanks are too small to have any useful range on an Omega.
Stag don't design multi valves....ecu's and presumably looms yes. It's the software that's stag, nout to do with the components. I have no idea if the stag system is well designed or not, but there's several members here happy with it.
...but note, none of those members, you included D, has the any experience with owning a multivalve in an UPRIGHT TOROIDAL.
Its good to see you've finally noticed the difference between your set up and the topic of this discussion. As said earlier, last I looked, no 4 hole exists in an upright toroidal. Now if a four hole does now exist, that would be different. Go for the upright toroidal and MAKE the damn thing fit as that's worth perusing.
To be totally fair, I didn't see why a single hole upright toroidal would be problematic either, BEFORE owning one. It's ok for plodding about, but upgrade your elites suspension and a new envelope of performance opens up that simply isn't possible on the standard suspension so affecting the valve in corners. Although Tunnie may not be concerned by that to tbh its still not something that could be described as satisfactory.
I would add, I would never attempt to pas comment on cylinder single hole, having never owned one. Because rightly, I would not be able to "see why it wouldn't work" either D! At least compare like with like.
We are aware of the poor range, as implied in the first few posts, and the suggestion of a larger capacity tank than the 55l tanks that are known to fit. 4 litres short of the 80l cylinders most of us have AND a full size boot space is worth having.
do try to keep up at the back
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Topic: LPG Donut Tank - 76L - Saloon (Read 3893 times)