Do split fire plugs actualy work?

 

Short answer, no. They arent any better than anything else really. Get ngk.

 

I bought one and the biggest difference I saw was how much I paid. NGK from now on.

 

i dont like them, NGK here too.

 

They do work, but it has to be under the absolutely PERFECT conditions, which just doesnt happen in the real world. I agree with everyone else, get an NGK. One of the BEST plugs out there

 

BigBad is right, it has to be perfect. Let's say you had a 400 horsepower Scrambler, first you wouldn't sell it for a Honda (nudge nudge). If you gain 10% from the plugs, you get 40 more HP. In the real world you may only have 40 HP and hope at best to gain 4 HP. Those perfect conditions won't be stable and the power will fall. I put one in the Boss just to see, and the hp wasn't there. Better off spending the money on other mods.

 

NGK

 

I tried them in my snowmobile. the only thing i notced different was i blew it up. stick with NGK.

 

tried them and they are nothing special. go with NGK I have also tries bosch but thay are also nothing special.