So I got a great deal that I couldn't pass up on some Ralliart plug wires.

Upon getting them I tested the resistance of them vs. the stock plug wires. Needless to say I was shocked at the results.

STOCK

Long = 5420 ohms
Short = 2590 ohms

Ralliart

Long = 300 ohms
Short = 145 ohms

Now I am curious if I can open my plug gap a tad because of the vastly lowered resistance in these new wires.

Yes, I realize that COP is the way to go and options out there are getting cheaper every day. I just wanted to post my observations.

Paul

 

That's some good info, thank's for the test

Where did you get the wires? Might have to pick some up.

 

Sorry....I should have said......Ebay.

 

That's cool, ebay's good for some stuff. Thank's

Walt

 

interesting...

link?

Have u driven w/ them installed yet? Any difference?

 

Sorry....no link. Some one was selling a set.

I have not driven them yet. I will report when I do.

I do not believe I will really notice much since I run an HKS DLI II. This was an impulse buy seeing a deal that was pretty darn good.

Shocked the heck out of me that the stock wires have such high resistance. So....I had a second set sitting under my work bench...tested the same. Talk about crappy wires.

 

Some of that resistance is there to help prevent interference with electronics. You may hear a snapping from your speakers that matches your engine speed with that low of a resistance wire. Not sure, but the ralliart wires might be designed to be used with spark plugs that have resistors built in...Definitely let us know if you notice anything with the wires, good or bad though.

 

Went for a short drive and the results are.....

Smoother idle is clearly evident
AFR is a tad leaner at cruise
Fuel trims at idle adjusted slightly

These could be placebo because of slightly cooler weather. I cannot determine the plug wires are the cause. Regardless.....I like them.

 

Its the shielding in wiring that helps with interference with electronics. The amount of resistance does not affect this at all!

 

 

Really?

Read this article. http://www.magnecor.com/magnecor1/truth.htm

Try making sure you know what you are talking about before you chime in next time, thanks!

 

It's not a placebo when the variables in your test are measurably different.
There has to be a reason why Mitsu engineers used wires at those resistance ratings. I'd be more wary of placing wires that have less than 10% of the resistance rating of the OEM ones.

You referenced that page detailing the implications of high vs. low resistance wires. Seems like you missed the section starting with "Low-resistance conductors." I recommend you re-read the page.

 

Ok Ladies....no more pissing contests....sheesh. I just wanted to state my observations.

After a couple days of driving I can verify the car does in fact rev a little smoother and idle a bit smoother.

 

Not to continue the pissing contest, but the reason I posted a link to that article is in response to the statement "The amount of resistance does not affect this at all!" Besides that fact, the section you are talking about is talking about solid core ignition wires, which had 0 resistance, which were used on race cars back in the days when they didn't use solid state electronics that EMI/RFI could interfere with...that is why there was no need for suppression. We are talking about daily driven street cars with loads of solid state devices, which solid core wires are not suitable for. Anyway, I say if you like the wires and they aren't causing any issues, go with it.

 

How old were your stock wires? My stock wires began to be out of spec after about 25-35K...