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Old Apr 19, 2018 | 10:00 AM
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If you want to do it, do it. It's your bike, your money. It's like saying dont change your mufflers because the stock ones already make noise.
 
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Old Apr 19, 2018 | 10:34 AM
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Originally Posted by bicard
OK, thanks.
So when Cycle Solutions, for example, claim the NGK plugs increase HP and Torque a bit, they are misleading us somehow?
What? A vendor making misleading claims? I'm shocked! Shocked, I say!

You should consider changing your blinker fluid as well.
 
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Old Apr 19, 2018 | 10:39 AM
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Only advantage Iridium or platinum has is a little better longevity that is all... the bump in HP or MPG is so insignificant that you will never noticed...
 
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Old Apr 19, 2018 | 10:41 AM
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Originally Posted by Keithhu
What? A vendor making misleading claims? I'm shocked! Shocked, I say!

You should consider changing your blinker fluid as well.
Don't joke about blinker fluids, if your out of it, the vehicle is technically lighter hence better acceleration and gas mileage.
 
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Old Apr 19, 2018 | 10:52 AM
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I use OEM spark plugs and just checked them at 15,800 miles and they look perfect clean, tan brown. I'm going to put new OEM plugs back in at 20k. Life is good!
 
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Old Apr 19, 2018 | 11:04 AM
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After my cam install I swapped the factory plugs for some SE plugs and kept it HD. No complaints.
 
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Old Apr 19, 2018 | 01:07 PM
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Default OEM Plugs
Looked at my owners manual, didn't see a reference for "spark plugs"..... Do you have a part number and or can we use the same ones as the previous TC used? thanks, CSM-H

Originally Posted by SomeOld Biker
I use OEM spark plugs and just checked them at 15,800 miles and they look perfect clean, tan brown. I'm going to put new OEM plugs back in at 20k. Life is good!
 
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Old Apr 19, 2018 | 01:20 PM
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IF there is a performance change, it is negligible. the reason for using platinum or iridium over a standard copper spark plug is longevity. what do the M8's come with from the factory?
 
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Old Apr 19, 2018 | 01:53 PM
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Originally Posted by h7009
Looked at my owners manual, didn't see a reference for "spark plugs"..... Do you have a part number and or can we use the same ones as the previous TC used? thanks, CSM-H
The M8 uses a different plug than the TC. M8 plugs are a 10mm plug, I think the TC uses a 12mm.
 
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Old Apr 19, 2018 | 03:44 PM
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Originally Posted by bicard
OK, guys thanks!
I'll leave it alone for now. I appreciate the input...
I'll be heading to DC for Memorial Day events (from DFW area), no sense in doing anything other than changing the oil and putting gas in her...!
Bob
Yeah leave it for now and then change them to iridium
 
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