Recently I found out 05 LS has developed a miss. I took it to the local garage to confirm if that was exactly what I was feeling and hearing. Went to local O'reilly's (I hate advance auto parts) and had a price quote of 6.99 a plug for Iridium plugs. Are these really as good as some people say also how good are the replacement AC Delco plug wires or is there something better than OEM for these cars?

Thanks.

 

the ac delcos are the ngk iridioms as for the wires for being oem are a good quality. just make sure to see if the gap is correct befor putting them in also use anti seize in the plugs before you screw them in. the last thing you want is when you do the plugs again is have one of them break in the head. also do a fuel clean when you change the plugs as in change the air and fuel filter as well as use some of bg or sea foam to clean the valves it is a fuel additive.if it misses after you do the plugs and change the filters it would be one of two things a coil pack or maf(mass air flow meter). what i am saying is you are doing it right.

 

its not recommended to regap the iridium plugs, if your cars stock i would just throw in regular ac delco plugs, my lightly mod'd 3800 seemed to like the iridiums a lot better then the AL103's im running now

 

The last time I went to the parts store, you couldn't get regular AC plugs anymore. had to get platinum or Iridium ones. I ended up putting a set of NGK V-power's in it. They are only a little over $2 a plug, and the work fine. My car is stock, but I used to run the same NGK plugs in my modified camaro I used to have.