so stock plugs are only good for 100k miles?

 

owners manual says change every 30K id change around 40ish

 

umm i have an off topic question... does changing the fuel pump decrease mpg?

 

I don't know how often you should keep your stock plugs. On the box from NGKs it says good for 100k miles. (if I remember correctly)

Just change them 30k miles and you will be fine.

 

thanks (ty too jeff)

 

Changing fuel pump will not decrease mpg, upgrading fuel pump will.

 

>.>???

 

I think our stock fuel pump is 155lph. If you will get walbro 255lph you will decrease your mpg unless you will tune it.

 

Denso's eh? Where can I order them from?

 

Whatever you do choose to go with I would stay away from platinum tipped spark plugs. Since our car uses a wasted spark ignition system, two of the spark plugs fire from ground to electrode instead of electrode to ground. I have heard that this will cause the platinum electrodes to wear out prematurely. Just FYI.