Please Help Me With This Question!!!

[honda400-4-ever]

I'm thinking about getting the Sparks Timing Key and wanted to ask a few questions. How well does it affect my performance? (more top end or more bottom end) Do I have to get a different spark plug because I keep hearing your pug gets red hot. Lastly how easy is the installation and do i have to rejet

[HondaRaceReady]

I never tried the advance timing key when I had my 400ex so I dont know how much it helps performance. I do know that just because the spark plug fires at a different time than stock, it wont get any hotter.

[honda400ex2003]

it is supposed to help quite a bit. check out a few of the other threads that talk about them too they are pretty good. steve