I haven't tried them in my bonneville yet as I just bought the car but if your gonna get NGK I've also had really good life and performance out of Bosch Platinum plus four. 4 tips for more spark. Combine that with K&N filter and you'll get even better gas mileage and performance.....but.....if anyone here knows they aren't the best for bonne please correct me.

Hey e8r23i80c,

put your year and trim level in yo sig.

oops, it was there i just needed to turn it on

I like the copper plugs for shear performance. NGK or if you want a hotter copper, Champion RS14YC6. These work exceptionally well in northern colder climates.

so many different options , should we make a POLL well the owner of the forums should and put a sticky this way ppl can just have an idea overall.

If money isnt an issue, then go with Nology Silverstone Sparkplugs. Silver is the best conductive metal on Earth and will give you much noticable performance. Most claim they will give you a performance difference but actually do very little. Believe me Nology Silverstone spark plugs are the best on the market. http://www.nology.com
Its funny though a ricer was the one who intruduced me to these silverstone spark plugs but at first I was sceptical and though they would be okay and not really intended for my supercharged bonneville, but the tech guy from nology explained to me how much of a difference they are and also who uses them. Hey If the Keith Black Hemi'* the produce well over 2500 hps use them. why not my bonne - right!

I just bought the bosch 4 series sparkplugs so far i havent noticed the difference but everyone tells me the best way to find the difference is changing the wires.


Maybe i should have went with NGK