Downtown 300i Changing Spark Plug

[TANWare]

It is amazing how fast we buy into gimmicks. Multi prong plugs of one type or another have been around for years. Hopefully these are actually better but I figure other than wear can be no worse.

Edit; an added note is I had about 20 miles on a tank of gas when I put in the plug. After the rides and some WOT the MPG on the tank was 73, no too shabby.

[pipster326]

Wow, not bad at all. Thanks for the update. Been a busy weekend, it's going to be a rainy day today. I'll keep the DT in the garage and change the plug. I let you know if I see a difference, with this amazing,new technologically, advanced plug [emoji16][emoji106]


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[pipster326]

Finally changed plug to E3 today. Took it out for a quick spin . Did not do TPS/ISC reset. To early to tell, but it seems it has a little more kick. Got it up to about 80-85mph, still had some throttle left. But it's hard to go any faster than that on North Jersey highways at 4pm. So far , so good

  -Rich


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[Nireen999]

I am interested, what does this spark plug do for the bike?

[TANWare]

The idea is that with the higher RPM's these is a very short time frame for the explosion to happen within the combustion chamber. The faster this explosion happens the more power from expansion within the chamber. The Iridium plugs raaised firing consistency helping a bit and now the E3 plugs supposedly raise the firing time yet again. Again this is the theory anyway.

[pipster326]

Yep, what TANWare said...For $10 , I figured I'd give it a try. I like it so far


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[Nireen999]

Thanks great explanation

[TANWare]

As a side note though the Givi screen is due in today. I just got 80MPG from a fueling but I will probably get less in the future so I won't be able to make comparisons.

[TANWare]

Ok, got the new screen in. With out a doubt it is taller. During a short ride I have noticed if I sit with proper posture then I slightly look over the screen, without trying to sit erect I look threw the glass.

At 30 MPH and above there is a slight whistling and at 40 MPH it is a solid whistle. This does though move allot more air than the old screen. Riding at 65 MPH there is little buffeting of air, where as there was a fair amount before. I also in stagnated air at WOT got to 89-90 MPH, so it does seem there is a slight drop of 2-3 MPH. I did notice 65 MPH was now 6,000 RPM instead of 6,100 as before, this was not expected.

I may later decide to cut thee screen down a bit, but I will live with it for a while as is to see what might be best.