efi just delivers the fuel, thats all, no different to carbie or whats on your lawnmower

Seee..... this is where the 'autotune' comes into its own.  I'm sure I have sparkplugs somewhere in the bike, but am confidant that the Thundermax sorts these out.

No wonder they call this the mad house

On ya GMH, gotta tell it like it is. 

quite surprised the pic was put up actually

In my experience Unleaded leaves a nasty black build up/sooty residue, rich or lean. It’s the devils spawn. 

does the same thing happen when put unleaded in your car? (if have car)

Interesting. Change your VE tables as much as you like, I don’t think you’ll ever get a clean grey/dry residue from unleaded coupled with peak performance. Plugs and piston tops always look dirty, well that’s my experience.

Ok will do.

I'll stick to a calibrated oxygen sensor thanks....

Ok

The steel end of the plug thread is black. It is much cooler due to the alloy head it's screwed into sucking out the heat, so has dark deposits. The insulator is pretty much white. It looks fine. I think the engine ( if it's Ralph's 110) is going just fine. Remind me of the torque Ralph? My experience with breathers is varied like all the available set ups. The size of the passages is often too small for a higher output motor. Oil grade/type is often an issue especially with softail models.

Quoting Lushy on 29 May 2019 10:56 AM

ok, 

ok, backing plate has been milled down to accommodate breathers 

Good on you ralphski, you got it sorted, as you say, see how it goes.

thats bit to drop in 5000kms, you running Penrite

Re read his post  robots  it hasn’t. Used  the oil he’s reduced the oil in the tank 

sorry, just to clarify, haven't used 1 litre of oil in the 5000 km's.

Lowering the level may help. Oil that does not foam in the tank is good. Lowering the level helps with that. On phone now with fat fingers. More later. Cheers