M157 spark plug issues
I have recently tuned my e63 and I have done downpipes. My car has a eurocharge tune on it.
First I get the cat cell light coming on after a little while of driving which I believe will be sorted out soon by Jerry soon
When I am stopped at a robot the car feels as if it has a misfire. She idles very weird. Almost feels like she is gonna switch off.
Has anyone had these issues?
What are the symptoms of the spark plug issues?
My local dealer does not recognize the number 6706. But he suggests I use a platinum plug
Does anyone have the actual number on the plug?
Any advise would be appreciated
12 12 0 038 507 / The plug has SIZKBR8A8HS written on it. It is an NGK plug sold by BMW.
I cannot confirm that it is the right one to use.
Renntech sells the plugs on their website for $44 each.
I have been told that it takes quite a bit of time. My dealer told me 2.8 hours.
That kind of stuff concerns me greatly and makes me wonder also about getting a tune. There is another thread on this and it appears most people have no issues. The increase in power is addicting they say
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12 12 0 038 507 / The plug has SIZKBR8A8HS written on it. It is an NGK plug sold by BMW.
I cannot confirm that it is the right one to use.
Renntech sells the plugs on their website for $44 each.
I have been told that it takes quite a bit of time. My dealer told me 2.8 hours.
That kind of stuff concerns me greatly and makes me wonder also about getting a tune. There is another thread on this and it appears most people have no issues. The increase in power is addicting they say

they should warranty it still so stop messing around and get it tuned !
hell u can get a dyno tune u r not to far from their shop
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I am just concerned when I hear the issues of the dash lighting up and having to change spark plugs.
Guess I need to call Renntech this week.







