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What plugs have you tested? Can you post the results? How did you test them, i.e., car, motorcycle? I would be interested in more info.

Well I don't think it is a "placebo affect", I think there are differences in plugs. I am an engineer, professional metal fabricator/welder, motorcycle/car mechanic (I own 3 racing motorcycles), etc. etc. and I study and read a lot about engines, etc. because I love this stuff. Like I said in...

Well, according to Denso: http://www.globaldenso.com/en/products/aftermarket/plug/plus/features.html Iridium and Platinum does effect performance as well as lasts longer. I have read this on other major spark plug manufacturers web site as well.

I like the E3s a lot and now use them in my 2 and Yaris. Funny, the factory 2 plugs are excellent, but I am seeking higher performance and believe the E3s perform better. Actually over Thanksgiving I am going on a long trip and will get a better idea as I am planning to evaluate them more...

I have never heard of the LGS plug you show above -- which exact plug number do you use in the Mazda 2 2011 and have you seen any improvements? I am now using the E3 in my Mazda 2 and they seem to be working great and I have been using them in my 2007 Yaris and they are outstanding in that car...

They seem to be working great.

Yes, the factory plugs are excellent, but I wanted to see if I could get increased performance as well. I only have a little over 1K miles. E3's design exposes the spark directly in the middle (not blocked by the outer electrode) so less degradation the ignition cycle.

Yes, the E3.48 are the exact fit for a 2011 M2.

Yes, I will let you know. Interesting point about the octane you speak about. Also, I have done a lot of experimenting with MPG with my other car using high performance spark plugs, i.e., Plulstar and E3. Excellent plugs. In my other cars I got ~ 2 to >4% better performance and MPG with them...

Cool web site, never knew about it -- fuelly.com. Thank you.

I understand and agree John, what you said happens with me as well. I am going on a long trip over Thanksgiving and will do a MPG test and post it herein.

Hi John, Thank you for sharing that with me. Actually, I am really not sure I was getting ~ 40 because I didn't test it long enough, but I thought it was about that. I would love to drive crazy as well, but around here N VA (DC area) there are cops everywhere and tickets are more painful than...

Miles per Gallon MPG Inquiry Has anyone done a MPG test on their stock 2011 Mazda 2? The Mazda web site as ~ 35 MPG, but I am getting better ~ 40. I was just wondering what other 2011 Mazda 2 owners were getting?

Has anyone tried installing pulstar iridium pulse plugs (be1i) in their car? Or the E3.48 plugs? The OEM plugs are good, but these plugs mentioned here are high performance and burn fuel more effectively which helps overall engine performance. Any thoughts from the forum?

Hi, I know this is a dumb question, but on a Mazda 2 what are the procedures for removing all the top plastic stuff (air filter box, etc.) so I can get clear access to the spar plugs, etc.? I am seeking the service manual instructions? Thank you, Bruce

Does anyone know the correct procedure for removing the plastic intake cover to gain access to the spark plugs?

Does anyone know the correct way to take the plastic off to gain access to the spark plugs?

Hi, Does anyone know the correct procedure for removing the intake manifold plastic cover (air filter cover, etc.) to gain access to the spark plugs?

Does anyone know the correct procedure for removing the air filter/valve cover plastic from the top of the engine? I want to get access to the spark plugs. Thank you. Bruce