I installed the Pulstar plugs in my 2005 Harley ultra classic and noticed an increase in fuel economy, smoother running and a slight power increase. So I have recommended them to several other riders who have made the upgrade.
I first saw Pulstar spark plugs advertised on TV. As a retired Fireman I recognized the difference in the combustion chamber explosion. That vision said "self you better buy those puppies". As a cheap old guy the lifetime warranty spoke loudly.
After putting the Autolite plugs back in (my 09 Harley FXDC Dyna) the pinging and misfiring was back! The Pulstars NEVER did this while using! The HE1-IT's are back in and will not be taken out ever again! Thank you for a product that does what it promises!
I have a 1997 S-10 4.3 L 4x4 auto.... originally 16 mpg.... 17 mpg with a Tornado.... (with Pulstar) 231.8 mi and 21.8 mpg....4.8 more mpg!
We now have them in our '07 Saturn Greenline Hybrid with the 2.4 VVT Engine and can honestly say we have dramatically increased our MPG.
My gas mileage has jumped from an average of 22.1 to 25.4...the torque is almost scary high.. Just the way I like it.
WOW! what a vast improvement! The car is much more "lively" and gas pedal response is much "quicker"! The car seems to have much more torque and pulling power.
I can not tell you how pleased with the get up and go my truck now has. The throttle response is very quick, I can't keep my heavy foot of the pedal. Thanks so much for offering these plugs...