Spark plugs

[911monty]

This is how my plugs looked @ 30k miles. Looked so good I replaced with the same.

[Frodo]

And "the same" would be?...

Are they Bosches?

[911monty]

Originally Posted by Frodo

And "the same" would be?...

Are they Bosches?

Yes. They are Bosch 4417 platinum +4. They were run in my 2.5L and pulled after 30k

miles @ 110k on the engine. Also for convenience you do not gap the plugs, just inspect

the electrodes for damage before installation.

[PLP]

Based on the spark plugs selection, is there any difference in terms of performance (I mean actually something felt, like low end torque, not necessarily high end power), or smoothness of the engine.

I started a thread in the Technical subforum, so maybe these two should be merged...

[blue62]

Originally Posted by PLP

Based on the spark plugs selection, is there any difference in terms of performance (I mean actually something felt, like low end torque, not necessarily high end power), or smoothness of the engine.

I started a thread in the Technical subforum, so maybe these two should be merged...

With proper plugs for the application.
Of the proper heat range
Gaped properly.
You will not feel any difference from one make or type of plug to another.