Is it worth it to get Denso Iridiums for my car?

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Old 03-10-2004, 07:44 AM
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Is it worth it to get Denso Iridiums for my car?

I got a guy on ebay that will sell them for $8.50 a plug ($51 for the set). With my modifications is this something I should consider, or is it a waste of money?
Old 03-10-2004, 07:53 AM
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I don't think it's a waste. Colder plugs seem to help performance. Don't expect to feel much of anything. For $51 it's not a bad deal.

I'm assuming you're getting the IK20s?
Old 03-10-2004, 07:53 AM
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For $8.50each/$51set...you can't lose. Get them!!!
Old 03-10-2004, 12:19 PM
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Originally posted by NSXNEXT
I don't think it's a waste. Colder plugs seem to help performance. Don't expect to feel much of anything. For $51 it's not a bad deal.

I'm assuming you're getting the IK20s?
I was actually thining IK16's. What's the difference?
Old 03-10-2004, 02:02 PM
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Originally posted by fla-tls
I was actually thining IK16's. What's the difference?
Get the IK20s. It's a colder plug which should correlate to better performance.
Old 03-10-2004, 02:11 PM
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i have the densos, thats a good deal. id get them reguardless
Old 03-10-2004, 02:58 PM
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Originally posted by NSXNEXT
Get the IK20s. It's a colder plug which should correlate to better performance.
Unless fla-tls has major mods, the IK16 should be good enough. Here's Denso's FAQ regarding which one to use:

Q. Why are there different heat ranges? Which one should I use?
A. Part of your spark plug’s responsibilities, in addition to firing a spark, is to remove heat from the combustion chamber. This is accomplished by channeling the heat through the insulator material and metal housing. From there, the heat is transferred to the cylinder head where the engine cooling system can go to work. A spark plug’s heat range is its ability to dissipate heat. The “colder” the plug, the more heat it can channel out of the combustion chamber. In a performance application, colder heat ranges may be necessary to handle the extreme temperatures brought on by higher compression ratios, forced induction, and high RPM’s. While “Colder” plugs may seem to be the way to go, please remember that the spark plug must achieve its “self-cleaning” temperature where it can burn off fuel and carbon deposits. Otherwise, the plug could “foul out” where it is prone to misfiring and poor acceleration. A plug that is too “hot” can overheat, also causing power loss, detonation, pre-ignition, and possible engine damage. A good, general rule of thumb is to start with the factory recommended heat range. For every 75 to 100 hp you add to your engine, you may go to the next colder step. DENSO heat ranges move up as they get colder; 16 would be our hottest Iridium Power plug, 34 would be our coldest (ranges; 16,20,22,24,27,31,34)

Denso's FAQ website here: http://www.densoiridium.com/faq.php
Old 03-10-2004, 03:48 PM
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what is honda's/acura's price for plugs?? its the same stuff for a accord v6 and TL, and honda is ussaly cheaper.
Old 03-10-2004, 04:44 PM
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Thanks a lot for all your advice, guys. I'm in the process of buying them.
Old 03-10-2004, 04:49 PM
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Originally posted by patrick
Unless fla-tls has major mods, the IK16 should be good enough. Here's Denso's FAQ regarding which one to use:

Q. Why are there different heat ranges? Which one should I use?
A. Part of your spark plug’s responsibilities, in addition to firing a spark, is to remove heat from the combustion chamber. This is accomplished by channeling the heat through the insulator material and metal housing. From there, the heat is transferred to the cylinder head where the engine cooling system can go to work. A spark plug’s heat range is its ability to dissipate heat. The “colder” the plug, the more heat it can channel out of the combustion chamber. In a performance application, colder heat ranges may be necessary to handle the extreme temperatures brought on by higher compression ratios, forced induction, and high RPM’s. While “Colder” plugs may seem to be the way to go, please remember that the spark plug must achieve its “self-cleaning” temperature where it can burn off fuel and carbon deposits. Otherwise, the plug could “foul out” where it is prone to misfiring and poor acceleration. A plug that is too “hot” can overheat, also causing power loss, detonation, pre-ignition, and possible engine damage. A good, general rule of thumb is to start with the factory recommended heat range. For every 75 to 100 hp you add to your engine, you may go to the next colder step. DENSO heat ranges move up as they get colder; 16 would be our hottest Iridium Power plug, 34 would be our coldest (ranges; 16,20,22,24,27,31,34)

Denso's FAQ website here: http://<br /> <br /> <a href="http...om/faq.php</a>
What you said hold true for TL-P's with few mods, but he has a Type-S. The TL-S has higher compression(more heat). All Type-S owners should use Ik-20's.

You wont notice anything going with the Iridiums, but they will last a long time, and thats a good thing considering what a pain in the butt it is getting at the rear bank.
Old 03-10-2004, 06:36 PM
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Originally posted by Ianbiz3
what is honda's/acura's price for plugs?? its the same stuff for a accord v6 and TL, and honda is ussaly cheaper.
my honda dealer wanted 22 a plug
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