Getting ready to do my first tune up since I bought the car. What is everyone's preference in plugs? Possibly stage colder two stages colder? Ngk or Denso?

Car is stock other than cosmetics. Lowered and wheels.

I'm new to Hondas. Have always owned Nissan's.

 

Forgot to add it's a 09 sport 5spd.

 

If it were me I'd keep whatever OEM plug gap it runs. I've seen people here fight check engine codes for misfires after playing with plug gaps and temps. I used the OEM Denso plugs along with Denso coils. Plugs came out at 91k and 11 years looking pretty good. No blow-by, burning nice and clean. If you're at 100k doing your plugs and you're going to have the cowling and air intake apart it would do you well to do the valve lash adjustment, seeing as it's due at about 100k.

'09 sport 5spd for reference, pic of plugs and coils, cylinder 1 on left, going right.

 

I agree with Red 05 above. The factory oem plugs are good for 100k miles according to Honda's recommendation for replacement. So why go to another plug manufacturer? If your car has the original plugs in it, and the car is running ok, why even consider a different brand plug or heat ranges etc.? Stick with the oem plug manufacturer and heat range for the win.....lol. Just my two cents worth of advice.

I would recommend that you do some research though on this forum about current recommendations for torquing your new plugs. Due to the documented fact that Fit engines tend to have a problem with spark plugs backing out of their threaded bores. Early factory torque recommendations, as I understand it, were to torque the plugs in the range of 13-15 ft lbs.. Now, apparently the recommendation is higher- 20 foot lbs according to some posts on this forum. Some owners have even gone to using thread locker on the plug threads to resist loosening. You have to remember that you're dealing with an aluminum head, so be careful and educate yourself before replacing the plugs. There is a lot of info on this forum about this issue.

 

My relevant log 99K miles:

-Sparkplugs & Ignition Coils
-->10/06/2018 Ordered IZFR6K13 NGK sparkplugs (SKJ20DR-M13 would have also worked) and Hitachi IGC0073 Ignition Coils from Amazon. The plugs are gaped properly at 1.3 mm or in the service manual range of 0.047 to 0.051 inches. Total cost around $200, which is probably 1/3 of the dealer installed price.
-->10/14/2018 Changed Ignition coils and sparkplugs. The old ones were Hitachi Ignition coils as expected and it had NGK IZFR6K13 spark plugs, same as I replaced it with. I believe both were there since the car was made and it ran better during the drive after I put it all in. I torqued the plugs to 16 ft-lbs. Used lots of Permatex Dielectric Grease on the coil packs.

 

Stock everything for stock performance and 100k mile maintenance intervals.

Denso IK22's gapped at .032 or so if you want more power, but possibly shorter maintenance intervals. Since I have a GD with super simple to change plugs, I just put a fresh set in and do the valve adjustment every 50k miles (GD's also have shorter valve adjustment intervals with a different valvetrain design than GE's)

Jackson racing found something like 5 more whp with the IK22's and my car does dyno well for being bone stock other than an air filter, IK22's, and a ton of miles.

Not trying to sell you on the colder heat range plugs. Just saying why some people choose them over stock. Nothing wrong with sticking with stock.

 

Ended up with oem NGKs. Factory gap. Car runs great.

Thank you.

 

Agreed. Factory gap and temp range. NGK brand only.

 

I changed mine (09 Sport) @ 89k, what a pain in the rear. I used E3s and did the coils at the same time. What a pain in the rear!

 

But now you are good for a very long time.