Spark Plug Question

I think stock is a DPR-6EA-9. Someone told me if I went to a DPR-7EA-9 it would reduce pinging and add a tad more power. Am I just getting dung slung in my face or is it true.

[Cajunrider]

I wasn't the one who told you that but my dealer suggested going to the 7's. I replaced the 6's with new 7's and did notice less pinging and the engine did run cooler IMO. I didn't notice any increase in power though. I have since installed the TFI and have nearly eliminated the pinging and the engine is running much cooler now. I'm using 87 octane gasoline now where I had to use 93 before. I am happy with the 7's and if they don't foul out too quickly I will stay with them for future plug changes.

[ringadingh]

Ive been using 7's for over a year now and no problems at all. I switched to the Iridium series which they say give a better spark with less voltage required at the coil, I cant change the voltage to the coils, so that doesn't matter to me. They are burning clean every time I checked them.