Spark plugs

[Joranger2023]

These are the ngk 6510 one step colder with nearly 10,000 miles on a 91 unleashed tune, if I go back to stock configuration, can I keep those plugs in or go one step hotter, factory plugs?

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[Grandaccess]

I am due for a plug change, I like to keep an engine within design spec if not building out an engine for a reason like towing or speed performance....

Do you have a performance Tune?
why are you running cooler plugs?
I always thought you would run a cooler plug if you were running a Tune for it...
if you are not running a Tune, I see no reason at all to run a cooler plug

there are other threads on R5G that cover it
https://www.ranger5g.com/forum/threads/went-to-colder-spark-plugs-and.17786/

https://www.ranger5g.com/forum/threads/benefits-of-colder-spark-plugs-after-tune.8590/

 

[Joranger2023]

I am due for a plug change, I like to keep an engine within design spec if not building out an engine for a reason like towing or speed performance....

Do you have a performance Tune?
why are you running cooler plugs?
I always thought you would run a cooler plug if you were running a Tune for it...
if you are not running a Tune, I see no reason at all to run a cooler plug

there are other threads on R5G that cover it
https://www.ranger5g.com/forum/threads/went-to-colder-spark-plugs-and.17786/

https://www.ranger5g.com/forum/threads/benefits-of-colder-spark-plugs-after-tune.8590/

Yes read my post, 91 unleashed tune

 

[Grandaccess]

Yes read my post, 91 unleashed tune

I havent had enough coffee yet ... My Brain read 91 unleaded LOL

 

[Joranger2023]

I havent had enough coffee yet ... My Brain read 91 unleaded LOL

lol it’s ok

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