I'd rather use OS plugs myself. I run them in my OS Speed and love OS plugs, they last so much longer.


i actually had it on the richest setting it would run on and it would still idle like that.

Could it be that im using 20% nitro? i know that these engines come from the factory to run 30%

its driving me crazy. Once i get this untuned broken-in, ill throw the .28 in and give it another chance.

if i used os plugs, am i able to put a grp plug in? I heard that the taper is a lot different from the os. then again you can't always believe what you read these days.

thanks for the replies.