NGK iridium IX

Don't know if this is old news but last year they weren't...

2 steps colder than stock heat range (BKR-5EIX-11) for the brave, the few, the foolish

I just ordered 2 sets... getting ready for my 3K western US road trip.

 

Is there a cheaper place to buy them than www.sparkplugs.com ?

 

I'll post where I got them ($5 each) when I get verification that they were shipped and are a good source..

 

Copper, its good enough for 11.9et's

 

Yeah, but I don't live my life a 1/4 mile at a time
Plus I'm a lazy butt that doesn't like to work on the car anymore!

Matt, what heat range are your coppers?

Even though I don't think my J&S has really shown any detonation even with the 3.12" pulley, I'm gonna try this set on my summer road trip the end of this month. About 3,000 miles of highway driving.

 

OK... just received my 12 plugs... quick service, too.
Total bill was $99 (Canadian) for 12 plugs and shipping to CA.

http://www.pdm-racing.com/products/misc_tune.html