http://cgi.ebay.com/ebaymotors/ws/eB...category=33693

My favorite parts are as follows:
"Denso themselves dyno'd a Civic 1.8 L Race Engine, and managed to Massage 59 more HP from Switching from Platinum to Iridium Plugs. How Much Will You Get?"
"2001 Subaru Impreza 2.5L RS with 45,552 Miles

6.1 HP Increase At the Wheels

5.1 TQ Increase At the Wheels"
MMmmMMmmHHhhMMmmmmm...

TVA

 

I wonder if those gains are actually true.

 

yeah but i bet the plugs they compared them to were in horrible condition. then again any new spark plug would have a similar increase