Aysle

Ok, i got a set of Iridium plugs (IK24) and they com gapped at 0.033 - The manual says the gap should be 0.04. So I should regap them correct?

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01 CL-S Navi - Black/Ebony
Xephyr CAI with I get my Car back
Alpine MRV-1507 V12 Amp - Tested @ 1,237 Watts RMS - 2,078 Watts Max
2x Alpine 12" Type R - Custom Enclosure
Escort Passport 8500

NSXNEXT

iTrader: (2)

You got the wrong plugs. The Type-S takes IK20s. Take em back. Not sure what would happen if you used the 24s.

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1999 Satin Silver Metallic 3.2 TL w/o Navigation

• 18x8 Racing Hart C2s with 225/40ZR18 Dunlop SP Sport 9000
• Comptech Springs, Sways, Exhaust, and Headers
• Red AEM CAI w/bypass valve
• A'PEXi Digital VTEC AFC
• Denso Iridium Plugs
• Custom Mugen Grill
• Inspire Tail Lights
• Factory Underbody Kit and Spoiler
• Clifford Intelliguard 9000 Alarm w/SmartWindows II
• Alpine 6 disk CD Changer
• BEL 945i Cordless Radar Detector
• Burlwood Shift Knob & Trunk Tray
• 20% tint

Aysle

I got the IK24s because thats what Denso said to get (I talked on the phone with them at length) They reason they said to get IK24s is because I am going to run NOS. So they said to get plugs that are 2 steps colder.

Back to the original question. What do I gap them at? 0.033 in or 0.04 in?


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01 CL-S Navi - Black/Ebony
Xephyr CAI with I get my Car back
Alpine MRV-1507 V12 Amp - Tested @ 1,237 Watts RMS - 2,078 Watts Max
2x Alpine 12" Type R - Custom Enclosure
Escort Passport 8500

BNut

Well if you are going to run NOS then leave them at .033 because that is what Denso told you to get!

Denso's come pre-gapped so whatever they sent you is what you should use, according to the conservation you had them.

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2000 Acccord LX V6 Sedan
- Eibach Pro-Kit Springs& Koni Yellow Shocks
- AEM Short Ram Intake
- AEM Tru-Power Pulleys
- Jet Hot Coated CompTech Headers
- 15.45 @ 88.8mph (Track)

Samer007

do plugs improve preformance or anything, im talking changing the stock plugs to something fancy ?

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Black 2001 Acura CL-S W/Nav %20,%35 Tint, Polarg M6 lamps

Live To Drive!

2Sxy4YoMama

No significant gains with no mods, but with I/H/E suppose to quite a bit. There is a previous post about this.

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2001 CL-S Satin Silver/Ebnoy

• Spoiler/moonroof visor/20% Tint
• PIAA 19173/19170
• Mobil 1 Oil/Oil Filter
• X-Pel/Upgrade Cup Holder
• Clifford G4 Solaris Remote Start Car Alarm
• AEM CAI/Denso Iridium Spark

On its way: Comptech Sway Bar/Brake Line/WS Apexi Coilover/AEM Pulley

JSuppi

Where would that post happen to be??

I am very doubtful of the serious improvements that plugs can make in the car (or at least any that justify spending that much money on a set of 6 (anyone remmember the ol' Splitfire debate??).

If anyone else can tell me otherwise I would love to hear it. Besides doesn't the car come with Platinum plugs anyways??



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01'
Black/Ebony CLS

Aysle

I just talked to Denso again. They say to leave the plugs gapped at what they come with. BUT you can regap them if you want. If you wanted a larger spark kernel you could get the IK22 (instead of the IK20s) and gap it out to 0.04 in (comes as 0.033). But they warn that you can break the tip if you try to regap the plugs. The tip is VERY brittle.

Also on a stock car you won't get any performance boost really. The most you will see is better gas millage (with current gas prices, they should pay for themself pretty fast). They said to see any real improvement you need to have atleast an intake.

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01 CL-S Navi - Black/Ebony
Xephyr CAI with I get my Car back
Alpine MRV-1507 V12 Amp - Tested @ 1,237 Watts RMS - 2,078 Watts Max
2x Alpine 12" Type R - Custom Enclosure
Escort Passport 8500

BNut

The funny thing is Platinum plugs are BAD for performance but GOOD for long maintenance intervals. They last long, but that comes at the price of performance. Standard NGK Copper plugs will probably outperform the Plats simply because Copper conducts electricity better than Platinum does.

The Denso Iridium conduct electricity a LOT better than our stock NGK plat plugs do which is most likely one of the reason a lot of us have have noticed an increase in power and in my case even dyno'd a healthy 7ft/lbs of torque from about 3,500 to 6,000 rpms. HP ranged from 3-6hp with about a 3hp increase at my peak.

Of course everyone thought I was full of it, until a few people actually tried them. I'd say out of every 5 people who bought them, 4 have said they felt a difference. So far nobody else has dyno'd their car before and after the plugs though.



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2000 Acccord LX V6 Sedan
- Eibach Pro-Kit Springs& Koni Yellow Shocks
- AEM Short Ram Intake
- AEM Tru-Power Pulleys
- Jet Hot Coated CompTech Headers
- Denso Iridium IK20 Plugs
- Forged Racing Hart 17x7.5" CP-035's with 225/45 RE730's
- 15.44 @ 87.87mph (Track)

phatpat

http://www.acura-cl.com/ubb/Forum1/HTML/004980.html

Thinking about getting them myself...

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2001 Black/Parchment Acura 3.2CL Type-S w/ Navi & spoiler
Current Mods: AEM CAI (red), Comptech headers & sway bars, Toyo Proxes T1-S 235/45ZR17 tires, 15% tint, PIAA 19169's, Infinity Perfect 12" subwoofer, Precision Power PC2600 amplifier, Monster Cable

http://albums.photopoint.com/j/AlbumIndex?u=1673199&a=12830383&f=0&sp=0

EricL

Some comments....


If you only have 1000-2000 miles on the car, I really doubt you will feel much of a difference (in a "stock car). Just putting in new plugs (something I do on all my engines) before the manufacturer's "due" date, always results in a smoother and better running engine.

There was the "dyno" of the Denso Iridiums vs. the Stock plugs, but the stock plugs were old. This proved conclusively, that a new Iridium is better than a used Platinum plug.

All plugs when viewed under a microscope or "loop" will have their corners and edges rounded-off with time. Sparks like to jump from sharp edges.

If you are thinking about changing the plugs, why not throw the Denso Iridiums in.

On the other hand, there is the graph that someone finally did comparing the NEW Iridiums to NEW Platinums, and the gain was close to 1 HP.

So, if your going to spend the money anyway, why not get the better plugs.

The plugs can be gapped if the center electrode isn't touched. In modified engines, gapping is an art -- a careful gapping can make a difference in a "modified" engine.

Have someone give you a ride in a prop driven aircraft with "dual spark plugs" (2 plugs / cylinder). Have the pilot switch between 1 plug, the other plug, and both, you will notice that the engine picks up a few revs with "BOTH" plugs working vs just one.

Note: -- the resistance of the material in "most" plugs results in a very small voltage drop, compared to the voltage being used to generate the spark...


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Silver 2001 CL-S with NAVI

• Mud guards
• Wheel locks
• Toyo T1S 235/45ZR17-97W* Proxies on 17x8" SSR Competition wheels (48lbs less than stock)
• Kevlar/SS Brake lines w/Brembos?
• Comptech headers & sways
• Silver AEM CAI
• 10 coats of Zaino magic

BNut

EricL,

Who ran the test comparing the new plats vs new Denso's? Also did they test NGK Plats or Bosch 4+ or whatever they are called plats.

That's pretty interesting.

Iridium130

so what's the verdict? Denso Iridium(130) plugs or not?

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_-Phil-_!
2K1 #10,029 Satin Silver CL-S since 6/13/00 named Laetitia with Navi! Mods : XEPHYR PERFORMANCE CAI~3M Reflective Tint(37%) tint~Hiper Hibrid Plasma "Xenon" road lamps & high-beams~Uniden LRD 6599SWS Radar Detector~Shine by Meguiar's Gold Wax~Member of the Scratched Rims Club~Upgraded cupholder ~

EricL

This "post" was actually from the earlier thread that came up. I want to be clear that I don't doubt that the Dyno of the new Iridiums improved the HP. The link here is a comparison between the Bosch #4227 Platinum's and the Iridiums, and the
graph "peak" HP gain is less than a one HP.

(Subject: Denso Iridium Race plugs VS Bosch Platinum #4227)


http://www.importreview.com/reviews/densoVSbosch.html

Note: The Bosch platinum plugs are commonly referenced by "F6DP". They are the "regular" platinum plugs, not the +4s.



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Silver 2001 CL-S with NAVI

• Mud guards
• Wheel locks
• Toyo T1S 235/45ZR17-97W* Proxies on 17x8" SSR Competition wheels (48lbs less than stock)
• Kevlar/SS Brake lines w/Brembos?
• Comptech headers & sways
• Silver AEM CAI
• 10 coats of Zaino magic

EricL

My comment would be this -- if you going to the "strip" and you want everything to be "perfect", put the IK20s in (IK20s for the CL-S), (IK24s [cold plugs for turbos, NO2, etc]), or the IK16s for a regular CLP. Your gains will depend on the amount of time you have had the car, the number of miles, and other factors.

I would have no doubt that a car with more than 10,000 miles that had mixed driving would pick up a little "juice" with the Denso Iridiums.

I plan on putting them in as "preventative" medicine in about 6 months, when I have a few more miles on the car.

(I wish I had of changed my wife's O2 sensor last year, even though it isn't required -- I would have saved about $250.00 in dealer rip-off charges)



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Silver 2001 CL-S with NAVI

• Mud guards
• Wheel locks
• Toyo T1S 235/45ZR17-97W* Proxies on 17x8" SSR Competition wheels (48lbs less than stock)
• Kevlar/SS Brake lines w/Brembos?
• Comptech headers & sways
• Silver AEM CAI
• 10 coats of Zaino magic