iridium spark plugs

[knightrider]

which is the best iridium spark plug available in the market???????? any idea????
NGK laser or DENSO??

 

[treeCUTTERman]

either or??? same arent they??

 

[knightrider]

no both r different american brands
BTW i think NGK is better.
any other suggestions by u?

 

[obi_waynne]

Iridium plugs, by their very nature are vitually indestinguishable. It really will not make a difference which you go for and both should last a considerable length of time.

 

[Saint Bastage]

Back in the 70's I ran NGK's in my bikes. They seemed very stable at high RPM but were Pre-Iridium. Due to those experiences, I run NGK Iridium in my Ferrari. I recently got 175,000 miles out of a set of Bosch Iridium's in my A3 (installed by the factory). I changed them because I thought I should but they were still operating perfectly. Wifey has the Denso Iridium in her Yukon x 50,000 miles without issue.

Honestly...unless you are partial to a specific arc pattern, no differance.

 

[indiaman]

In my limited experience with NGK and Denso, I noticed no difference.

 

[jarrus]

NGK seem to be the tuners favourite i've found, but yeah I wouldn't have thought there would be a difference, the reason for using the iridium tip plug is that they don't have to be gapped every 5 minutes to maintain engine performance and fuel economy, i bet really if a manufacture uses iridium plugs in there cars, they wouldn't need to be replaced at the set intervals, just "gapped"

 

[knightrider]

thank u all for the pretty good info...........