View Poll Results: Which do you prefer?
Denso IW22 Spark Plugs
36
37.50%
NGK BPR7EIX Iridium IX Spark Plugs
60
62.50%
Voters: 96. You may not vote on this poll
Denso IW22 or NGK BPR7EIX Iridium IX Spark Plugs?????
Thread Starter
Joined: Dec 2003
Posts: 1,054
Likes: 1
From: South Coast of MA
Denso IW22 or NGK BPR7EIX Iridium IX Spark Plugs?????
I'm going to replace my plugs with either of these. Which do you guys prefer? All thoughts appreciated.
I run Denso IW24 gapped at .028 inches. I dont have a lot of mods per say, but I think of it as a small insurance policy. Those plugs are expensive (~ $50 if I recall), but worth it, especially if you are planning on turning up the boost even by a few pounds. I also replaced the spark wires with some Magnecor 8.5 wires.
On average it did cut down on my knock readings running 93 octane.
On average it did cut down on my knock readings running 93 octane.
Evolving Member
Joined: Jun 2003
Posts: 447
Likes: 0
From: PA
never had any issues with Denso plugs before... NGK's on the other hand.........
on a side note... noticed that the FQ-400 uses Rhodium plugs... anyone with experience, knowledge, and where to get them
on a side note... noticed that the FQ-400 uses Rhodium plugs... anyone with experience, knowledge, and where to get them
www.z1auto.com sells denso plugs IW22 and IW24
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Went from stock NGK to Denso IW24 and back to same NGK stock that came with the car.
The stock NGK (used) seems to be better. The Denso IW24 were shorter than the stock so I believe the flame front was not as center as the the stock one. Once Denso makes a plug for the Evo8, it might be better than the IW24.
The stock NGK (used) seems to be better. The Denso IW24 were shorter than the stock so I believe the flame front was not as center as the the stock one. Once Denso makes a plug for the Evo8, it might be better than the IW24.
try the Denso IW01-24. They are the same plugs that Ralliart sells for the EVO. I have some pics of these plugs before I put them in my car that I'll try to post later today.
For now goto this page:
http://babelfish.altavista.com/babel...structure.html
For now goto this page:
http://babelfish.altavista.com/babel...structure.html
Evolved Member
Joined: Mar 2004
Posts: 1,041
Likes: 1
I bought Ralliart RAY66001 heat range 7 that was built for street and road use. They were made by NGK and I think that is the same plug as BPR7EIX. In my opinion try the NGK because the Ralliart company would not put its name on a crap spark plug.