Eurocharged offers NKG Iridium Spark Plugs for 55 kompressed cars and also offers a similar plug that is advertised to be "one step colder than stock" http://www.eurocharged.com/shop/prod...5&category=all

My only experience with aftermarket plugs was with my old BMW 850 (which I no longer own). I went with platinum plugs and discovered after the fact that the factory coil did not provide enough jolt to properly fire platinum plugs. Over about 3 weeks, 4 had fouled completely and the other 8 were well on their way. Went back to a fresh set of "stock" copper core plugs (12 of 'em) and the car ran smooth as glass. You really can balance a 50-cent piece on the engine conver while a BMW V-12 idles! It was a mildly expensive lesson.

Point is, NKGs sure are alot less expensive than what the dealership charges for factory plugs. Will they work as well as stock plugs? What about "one step colder" - what does that mean, actually? Is there any improvement in performance in this department? Just curious before lighting any money on fire.

On a similar topic does anyone out there have any experience with EvoSport performance plug wires? http://www.evosport.com/product/prod...VO.PER.MV8.IG1 Do these offer any measureable advantage over stock?

Back to my old test mule, the BMW 850 - I put a set of "high performance" plug wires on the car from what was supposed to be a reputable BMW tuner - (NOT Evo or Dinan) and the car ran like crap. When I checked to see what the deal was, the wires were literally pulling right out of the boots! There was a little point inside each boot kind of like a slim finishing nail that the end of the wire just "press-fit" onto. Probably the cheesiest, cheapest design I had ever seen. The company would neither refund my money nor replace the wires (why would I want another set anyway?) I ended up spending north of $300 for a set of Kingsborne Wires - the BEST plug wires I have ever used.

I in NO WAY think Evo's wires would not be good quality. I have an Evo cooling kit and it is top-notch, as was their customer support during install. But I am wondering if there is any real world difference in perfromance to be found in these plug wires - especially if my stock wires have only 20k miles on them and I have never had a fouled plug in the car (which can fatigue a plug wire). If there IS a difference, I do not mind spending cash on a good quality set of aftermarket wires and "cooler" plugs. But I also wonder if I should save the $500 that Evo wants for the plug wires and put it toward simply replacing the factory plugs at the correct service interval????

Thanks for any anecdotal or first hand feedback!

 

the iridium ngk plugs are good plugs and will work fine...and half the price of the oem ngk plugs. you can go one step colder (i did), and if you're modded it might even be recommended.

people have had luck with magnecor wires and i'm running the bosch aftermarkets now so you can also save costs compared to oem in that area as well.

 

I know BrianS used the Evo plug wires, and so far I haven't heard anything bad about them. I am running Magnecor wires along with the same spark plugs as chiromikey and I haven't had any issues and the car runs nice and smooth.

 

those are good plugs but, you can get them a lot cheaper than $195. I found them as low as $125 and that's a $70 dollar difference. the part number is BKR5EIX-11 and the gap is
.39

http://store.ngkwholesale.com/index....D&ProdID=37770

 

What is the advantage to running the plugs a step colder??? Would they be mor prone to fouling if they are not firing as 'hot'? Does this reduce engine temps? Reduce detonation? Just wondering.

 

I've got the Evo wires and they works just fine, plus they cost less than the stock replacements.

 

I have the eurocharged NGK in my car and they work well...

 

let me chime in here for a sec the ngk BKR5EIX-11 are shorter than the plugs that go in ur car... i am right now changing my plugs and thought that the ngk BKR5EIX-11 was the plug so i bought them and when we pulled out the 1st plug and compared it wasn't the same .. so the right plug that is cooler is the NGK IR LASER IRIDIUM ILFR6A and is a perfect match and the stock # if u wanna order them is 3588 ..and if u really look and do more research the BKR5EIX-11 plug says it for 99-04 e55 .. our cars didn't start till 03-06 so when i went thur and did find the new plug is for 03-06 e55's ..and the cost of these plugs NGK LASER IRIDIUM ILFR6A are 170$ and the ngk BKR5EIX-11 is 120 and change 6.99 a plug

 

yes, in a more modded car it can help to reduce detonation. our oem heat range is slightly hot to begin with so even stock cars could probably run a step colder and not have any problems.

 

what he said except that 6 is stock heat range. go with 7 if you want to run one step cooler.

 

see mikey i'm smart and fast lol ...