Runs bad in low rews.

[Bixxer Bob]

Not knowing the internals, it seems like another case of function defying physics.  It shouldn't make any difference; it just does.

[Swede1]

'Shooting in the mufflers'? You mean 'backfire',or a 'popping' sound like I've got,due to holes in them

Yes it kind of backfires. Today when I tried to start it made a loud backfire!

[Swede1]

Thanks a lot I'll try that!
I thought that red was + and not ground so hopefully you're right about that.

I'm not shore any longer about anything but that's worth a try 😀

Old ground (electric cables) in houses are red.

[Bixxer Bob]

I thought that red was + and not ground so hopefully you're right about that.

Old ground (electric cables) in houses are red.

  It'd be fun watching a brit electrician at work over there 

[P3aK]

I just read up on this coil polarity thing as well. It will work even if they're reversed, but it takes around 15-20% more to create sparks. If the coils are slightly bad,  that extra bit could be the difference. 

So I'll steal a question as well.
Does anyone know which is the negative side on the Denso sticks? Looking at the connection pins, coil pointing downwards.

[Earthscape]

I just read up on this coil polarity thing as well. It will work even if they're reversed, but it takes around 15-20% more to create sparks. If the coils are slightly bad,  that extra bit could be the difference. 

So I'll steal a question as well.
Does anyone know which is the negative side on the Denso sticks? Looking at the connection pins, coil pointing downwards.

All I can tell you is that with polarity reversed I had the crappy low-RPM running even on a brand-new Nology coil.

[JayDub]

I would re-wire them all the same way, if there's no improvement then reverse all of them?