spark plugs
- Thread starter matrixxx
- Start date
Two 1.5s in Greece(mine too) and other in Japan are using Denso Iridium Power IK20 setted to 1.1mm and work ok!Little less power at low end and a bit more power at high rpm.
They are also cheaper than the oem spark plugs if bought from Mazda.
I couldnt find the part.n for ngk.If you do it,inform us.
They are also cheaper than the oem spark plugs if bought from Mazda.
I couldnt find the part.n for ngk.If you do it,inform us.
95 octane... but, they say that is realy 93 oct...
i utilice a octan buster NOS, because, is very bad the gasoline from panama
We dont have the same ratings in octane between Europe and America, so this would not be a problem.
http://www.m3post.com/forums/showthread.php?t=259770
Greetings From Greece
should i change my spark plugs because as of now, im using OEM and the gasoline that is recommended by the mazda is 93 octane only (unleaded). thanks.Racebrewer
Member
- :
- Mazda, Mazda 2 Touring MT
The "Octane Rating" is the resistance to knock or "pinging" which can damage the engine. Basically "knock" is when the air/fuel mixture ignites other than when the spark plug fires. Usually, too soon, which beats on the pistons.
Raising the octane rating (better gasoline) lowers the risk of Knocking. You can also add Octane Booster or tolulene to raise the octane rating.
A "colder" plug might also prevent knocking but might be more prone to fouling on cold days or idling.
On the US Honda Fit, a plug change has been found to produce a couple HP. No idea if that would work with the M2.
I'll find a link.
John
Raising the octane rating (better gasoline) lowers the risk of Knocking. You can also add Octane Booster or tolulene to raise the octane rating.
A "colder" plug might also prevent knocking but might be more prone to fouling on cold days or idling.
On the US Honda Fit, a plug change has been found to produce a couple HP. No idea if that would work with the M2.
I'll find a link.
John
- :
- 2016 Scion iA
I am familiar with the HP that can be gained by sparkplugs in the Fit and was curious if the 2 would have similar gains...But isn't that mainly on supercharged applications? I believe it was Oscar Jackson at Kraftwerks that found out about the plugs and is talking about low-boost supercharged models. Here is his post.
Edit: Nevermind, I just read this article in Honda Tuning.
Looks like there were a couple of HP gained on a NA 2009 Fit with the same spark plug change... Anybody got access to a dyno to try it out?
Edit: Nevermind, I just read this article in Honda Tuning.
Looks like there were a couple of HP gained on a NA 2009 Fit with the same spark plug change... Anybody got access to a dyno to try it out?
Last edited:
Racebrewer
Member
- :
- Mazda, Mazda 2 Touring MT
Thanks Richard! I won't have to find that link after all.<LOL>
Redhax, whatever sparkplug (and gasoline) works for you. Most modern cars have knock sensors which, when they detect knock, will "back off" the ignition timing to stop it. When the ignition timing is retarded, performance and mileage usually suffer a little. If your gas mileage increases with your 95 octane, I'd run that. It might take a few tankfuls of both types to get good baselines.
Something like a Scangage (sp?) might be able to tell you the ignition timing your computer is spplying.
If you go to 95 from 93 (no dea how that relates to US gasoline) the current sparkplug should be fine.
John
Redhax, whatever sparkplug (and gasoline) works for you. Most modern cars have knock sensors which, when they detect knock, will "back off" the ignition timing to stop it. When the ignition timing is retarded, performance and mileage usually suffer a little. If your gas mileage increases with your 95 octane, I'd run that. It might take a few tankfuls of both types to get good baselines.
Something like a Scangage (sp?) might be able to tell you the ignition timing your computer is spplying.
If you go to 95 from 93 (no dea how that relates to US gasoline) the current sparkplug should be fine.
John
bigtymer443
Member
- :
- mazdaspeed turbo axela
will the denso ikh iridium plug work in my ms axela
Stock with 87 octane shows a few degrees to 50+ degrees with my scangauge. With variable timing, I'm not sure what else you can do with that info other than being glad when your timing is above 40 since your MPGs are higher in that range.
