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NGK Iridiums BKR8EIX ***12k mile update on page 13***
RedRobin:
--- Quote from: TT-Turbo on August 31, 2012, 09:22:39 am ---
I had my BKR8EIX plugs in for a similar mileage on my K03 also, they seemed to work well and have had no misfires but when I checked them recently I found this-
They were massively coke'd up and had loads of carbon deposits. I changed back to the hotter "7" plug and since the engine actually feels like it's got quicker which may have over the last 600 miles burnt off excessive carbon deposits. Worth thinking about, they may not be any noticeable running issues but since changing back the engine seems stronger.
--- End quote ---
....I think this illustrates very well why it's good practice on a tuned car to more regularly change plugs than suggested in the car Handbook. I change mine (iridium heavenly sevens) every 20k miles.
56OctyVRS:
--- Quote from: TT-Turbo on August 31, 2012, 09:22:39 am ---I had my BKR8EIX plugs in for a similar mileage on my K03 also, they seemed to work well and have had no misfires but when I checked them recently I found this-
They were massively coke'd up and had loads of carbon deposits. I changed back to the hotter "7" plug and since the engine actually feels like it's got quicker which may have over the last 600 miles burnt off excessive carbon deposits. Worth thinking about, they may not be any noticeable running issues but since changing back the engine seems stronger.
--- End quote ---
Thats how mine looked. Unless you drive the car hard you wont burn off the carbon deposits with the 8s. These are a plug more for track days than normal driving. Since fitting the 7s my car hasnt missed a beat and feels loads beter to drive.
MAT ED30:
Mine were the same as I had a misfire so pulled the plugs out and everyone fecked
Saintsteve:
I too ditched the 8's back to the oem 7's and confirm mine feels a lot stronger especially at top Revs.
rich83:
--- Quote from: Saintsteve on April 23, 2012, 07:20:47 am ---
--- Quote from: richwig83 on April 23, 2012, 12:07:03 am ---I may be wrong but all this "specific" spark plug nonsense is exactly that.
Im guessing a lot of folk have bought these, when actually a set of OEM plugs would have been absolutely fine.
--- End quote ---
On your state of tune rich, oem ones are fine, but stage 2 and up , 8's are better, as I've found out on my own Stage 2 car.
--- End quote ---
Ohh.... looks like i was right after all... :innocent:
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