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hks r50 plugs or NGK plugs

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Old 03-24-07, 09:16 AM
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hks r50 plugs or NGK plugs

hks r50 plugs or NGK plugs running about 400 on the wheel?

what would you guys recomend im currently running HKS on all four but one or more as broken down and need replacing gutted
Old 03-24-07, 09:56 AM
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NGK B9EGV

http://www.sparkplugs.com/results_cr...9EGV&x=44&y=10

Requires a thin wall socket from Racing Beat or modified rotor housing.
Old 03-24-07, 10:48 AM
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there only heat range 9 tho, and wont last that long
Old 03-25-07, 12:11 AM
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Originally Posted by Phaz
there only heat range 9 tho, and wont last that long
You ask for a good plug for about 400whp, my answer is correct!
Next suggestion is B10EGV but they are a little cold for only street driving.
Old 03-25-07, 10:21 AM
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Originally Posted by cewrx7r1
You ask for a good plug for about 400whp, my answer is correct!
Next suggestion is B10EGV but they are a little cold for only street driving.

This guy knows what he is talking about, and there is not many people on this site I will vouch for like that.
Old 03-25-07, 01:04 PM
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I'm currently using the NGK Iridium BR10EIX in leading, stock 9s in trailing.
Old 03-28-07, 01:59 AM
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How much boost?

Making 400hp on 15psi versus 25psi makes a difference...


-Ted
Old 03-28-07, 12:46 PM
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The BR10EIX for all 4 have been working great for me and they are cheap.

Run it rich, cooler EGTs, more premix and any plugs (and motor) will take less abuse.

If I run a little lean plugs last 1 road tuning session, if I run my usual 10.8:1 the plus last ~10,000 miles.
Old 04-01-07, 01:00 AM
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ok not really the right thread but i will ask anyways i want to get some good plug and plug wires for my rx7 and it is an n/a and i only use it for the track.
Old 04-03-07, 07:42 PM
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I'm running 9's in all 4 it runs great, 800 idle with about 300+hp....when I go with a ecu, would anyone suggest running 10's or staying with 9's??
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