For LPG and CNG cars I would recommend Denso Iridium TT . Because of their thinnest central electrodes in the industry , they lower spark breakdown voltage by up to 5KV . As it’s known , LPG and CNG air/fuel mixtures are more difficult to ignite and because of that usually the spark gaps of regular spark plugs need to be reduced ( when used on LPG/CNG converted engines ) . With Denso Iridium TT this is unnecessary. Also since the central electrode tip is made of Iridium and the ground electrode tip is made of platinum they last at least 100K km and no need of recapping them during the all service interval . As about multi ground electrodes spark plugs , it’s scientifically proven ( by not somebody else but NGK) that their ignitability is lower than on single ground electrode “J” gap spark plugs , because multi ground electrodes disturb the mixture flow in the spark gap and after the mixture get ignited they consume too much heat from the initial flame kernel , cool it down and this way slower its growing and expedition in the combustion chamber. Also the constant movement of the spark from one to other ground electrode ( spark never jump to two or more ground electrodes simultaneously!) make the idling more unstable .

Why would you say that? I would actually think the opposite!!!

Acceleration. If your wagon did 0-60 in 16 sec, you could reach sub 5 sec with this allspark

More complete combustion. No ground strap blocking flame propagation or getting hot.

​@@natez0690 hey this plug for better ktm Duke 200 solvent fuel ratio combustion