I'm almost done, need help to figure this one out....??

[98turbo]

Ok, just got done with my tune. Made 285whp and 295tq at 17psi. Now, when I floor it in any gear after 2nd, it studders for a sec then drives fine. Sounds like a spark plug misfire but I pulled them to look at the ends and on the last 2 threads it's black and the prong? is black and fades to white at the tip. Anyone know whats going on? Could it be my transmission?

 

[BGGSTin]

Check this out it may help you out http://www.motocross.com/motoprof/moto/mcycle/plug2/plug2.htm Good Luck!

 

[98turbo]

Thanks for the info man. My plug is like the second one. I know I was running really rich but now everything is fine....so I guess I should buy some new ones....anyone else have an opinion...

 

[andymoraitis]

I agree, it's from running rich. Swap them out and check them periodically. I like to pull mine every two weeks or whenever I make a tuning adjustment that will affect A/F. Nice numbers by the way!

Andy

 

[98turbo]

Ok, thanks guys...