I have aquired these plugs from Lee, Thanks Lee, and I must say I am totally impressed with them so far! I only installed them today along with my PRJ 10.4 plug wires and the difference between my AL 104's and the LGS's in NIGHT and DAY!
Why?
Well so far, the performance of the engine in acceleration is almost seemless now as compared to my 104's. Idle in my car is smoother than before. I have yet to do a really good WOT run, but with the limited space I had in traffic, they performed WAY BETTER than I had hoped!
I am serious about the acceleration part. I noticed a difference almost immediately with them. There was no jerkiness in the steady increase in the gas to the motor as I had felt with the 104's. I almost couldnt tell I had shifted and power just seemed to keep coming until I realize I am almost doing 80mph heading into traffic![]()
I will hopefully figure out the mileage thing, but my current tune is kinda jacked so it will not be an accurate account for these plugs, but on the performance scale they are TOPS so far in my book! I am nowhere as versed as Lee is in regards to these plugs, but from a pure drivers take on them, I can not see why anyone would not want to use them!
As for the heat ranges of these LGS plugs, that is something maybe Lee can answer or perhaps Overkill. But I definitely am enjoying them and plus with them being pure silver, they are gonna have atleast double the life of the 104's. And that is a plus in my book.