E3 spark plugs are said to accelerate the combustion process. However, modern EFI engines utilize extremely high compression ratios and very efficient combustion chamber designs that already yield a very fast burn rate.

I highly recommend the E3 for small engines. I replaced the OEM plug we use on my Honda GX390 with the E3. I do not have a dyno to check hp, but it did make a noticable difference. It does not stall at idle anymore and the power seems to be as stronger, through the entire rpm range.

Headquartered in Point Vedra, Florida, Pyrotek E3, d.b.a. E3 Spark Plugs, was formed to help customers increase power, improve fuel efficiency, and reduce engine emissions that contribute to global warming.

E3. 36 is a 12mm, 0.750″ reach plug with a gasket seat. It is used in a variety of powersport applications, and is often the correct plug for V-Twin motorcycle engines. Most late model Harley Davidson engines require E3.

5 years How often you change the spark plugs in your vehicle depends upon the type of plugs you use and how you drive the vehicle. Naturally, better plugs and easy driving conditions are optimal. E3 automotive spark plugs offer a 100K mile warranty, or 5 years from the date of purchase.

Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.

Tailored for high hp boosted (turbo, nitrous or supercharged) applications, the plug features E3's patented diamond-shaped ground electrode for maximum combustion and edge-to-edge spark, as well as a resistor to keep stock electronics functional. The E3.

By simply replacing your existing plugs with premium E3 spark plugs, your ride will have the performance it deserves. Horsepower gains of 4-6% can be expected, depending on engine class size.

Start and check if sparks happen. If they are blue, the spark plug is ok. Else if the sparks are yellow or there is no spark at all then the spark plug is bad.

The Best Ignition Coils for Optimal Engine Functionality and Startup

• ENA Ignition Coil.
• Runner Up. QYL Ignition Coil.
• Premium Quality. Bravex Ignition Coil.
• Best Value. Delphi Ignition Coil.
• ACDelco Ignition Coil.

By simply replacing your existing plugs with premium E3 spark plugs, your ride will have the performance it deserves. Horsepower gains of 4-6% can be expected, depending on engine class size.

The most common signs of bad spark plugs include start-up trouble, rough idling, sluggish acceleration, declining fuel economy, engine misfiring, and engine knocking.