plug question....
 

guys,

help me take a look at my spark plugs.... all time running AFR 11.2 for WOT.. sometimes 10.9... my country is VERY HOT all year long.

and the plugs were just around less than a year old.... around 7 months... i believe..

then i went for rebuild.. same set of plugs were used back... i believe...it's giving me hesitation on high end... then i dump in my old cleaned iridium plugs heat range 10.5 ...the hesitation disappeared....

these plugs duno if it's not suitable for my application.... ?

http://img222.imageshack.us/img222/5291/dsc01207bz2.jpg

http://img175.imageshack.us/img175/2656/dsc01208pf9.jpg

just curious how come the ground ended up eating first.