just curious, how often do you guys change your sparkplugs? i have a 88 T2 with streetport, mildly modded, running 10 lbs... in my turbo eclipse i used to change them every 2nd or 3rd oil change depending on how much i would beat on the car... i know the rotary plugs are way diffrent than regular plugs in a piston engine so i dont know if they last longer than regular ones or not. ... any info would be great. and my plugs are new since the motor has been redone, aprox 1400 miles on them.. and runs premix too so i dont know if that makes a diffrent. thanks guys!

 

I'll randomly pull the leading ones during oil changes to look. But I think 7 to 10k miles before I start noticing a little harder starting.
Stock boost levels (10 psi), mildly modded primarily street driven. NGK stock heat ranges. I stopped getting the Platinum versions after I didn't notice them lasting any longer. YRMV

 

on what your running i would say yeah about 7-10. check the leadings early if your beating on it real good

 

This is good info to keep when i get my car