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Old 09-17-2007, 02:36 PM   #1
Skin Irritant
Scooby Newbie
 
Member#: 157208
Join Date: Aug 2007
Location: Anderson, Indiana
Vehicle:
2006 Wrx TR Wingless
WRB

Default Read the manifesto, but looking for more direct information about spark plugs

The manifesto was great..... but general. I want to change the plugs on my ride, but I want to hear from "tried and true" examples and more importantly... product names of what worked and why... or brands to just stay away from.

When I had my mazda 3, I used the bosche plat 4's..... and they were GREAT. This is my first subaru, and i hear that all the normal rules do not apply.

Spark plugs used to be simple. Now there are 1 prong, two prong, 4 prong, different metals, etc.... I just want to know what is the best.

Please help!
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Old 09-17-2007, 02:42 PM   #2
Metallrulz
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Member#: 100148
Join Date: Nov 2005
Chapter/Region: Tri-State
Location: South Jersey
Vehicle:
2003 WRX Wagon
Silver

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Is your car stock?

If so, go with the stock NGK plugs. They might be a bit more expensive then others, but it takes out the guesswork.
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Old 09-17-2007, 02:42 PM   #3
dlh1999
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Location: Corvallis, OR
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2006 300c SRT8
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Have you modded your car at all, or are you planning on doing so in the near future? If it's stock and will stay like that for a while, just use the OEM NGK's.
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Old 09-17-2007, 02:47 PM   #4
Skin Irritant
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Join Date: Aug 2007
Location: Anderson, Indiana
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2006 Wrx TR Wingless
WRB

Default

Quote:
Originally Posted by Metallrulz View Post
Is your car stock?

If so, go with the stock NGK plugs. They might be a bit more expensive then others, but it takes out the guesswork.
Cold air intake (and yes it works with no check engine light CAT back, larger fuel rail, and going to be installing larger up-pipe and downpipe.
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Old 09-17-2007, 02:55 PM   #5
chapstien
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Location: I'm gonna hoard some cats.
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obsidian black

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Old 09-17-2007, 04:09 PM   #6
TheSilverFox
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Location: Fort Worth, TX
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2006 STI - Protuned
308whp - SilverFox

Impreza WRX STi

Quote:
Originally Posted by Skin Irritant View Post
Cold air intake (and yes it works with no check engine light CAT back, larger fuel rail, and going to be installing larger up-pipe and downpipe.

hopefully your AFR's are staying in the 11's where they should be. sometimes a CAI can mess with the AFR and no CELS would be thrown. So you could be damaging your engine and not even know it.

With that being said, I have a CAI on my car as well (AEM) and the AFR's were 11's across the board when I went to be tuned.

--J
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Old 09-17-2007, 05:15 PM   #7
Skin Irritant
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2006 Wrx TR Wingless
WRB

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Quote:
Originally Posted by TheSilverFox View Post
hopefully your AFR's are staying in the 11's where they should be. sometimes a CAI can mess with the AFR and no CELS would be thrown. So you could be damaging your engine and not even know it.

With that being said, I have a CAI on my car as well (AEM) and the AFR's were 11's across the board when I went to be tuned.

--J
I went with the injen and love it. I am not sure where my car is in the AFR. Is that something that my A/F guage will be telling me ( is is usually in the middle) or is that something that I will need to have professionaly done? I am still learning here and trying to pick up all the info I can.
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Old 09-17-2007, 05:26 PM   #8
Metallrulz
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Join Date: Nov 2005
Chapter/Region: Tri-State
Location: South Jersey
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2003 WRX Wagon
Silver

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Quote:
Originally Posted by Skin Irritant View Post
I went with the injen and love it. I am not sure where my car is in the AFR. Is that something that my A/F guage will be telling me ( is is usually in the middle) or is that something that I will need to have professionaly done? I am still learning here and trying to pick up all the info I can.
It sounds like you have a AFR gauge like this:


Which is worth nothing more then the pretty colors it lights up.
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