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BMW 3-Series (E90 E92) Forum
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N55 Spark plugs and maintenance
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01-09-2013, 07:11 PM | #1 |
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N55 Spark plugs and maintenance
How many you guys changed ur plugs
every 20k? did mine at 60K. any noticeable difference. just want to see the kind of maintenance u guys are doing. any valve cleaning?
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01-09-2013, 07:32 PM | #2 |
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I changed mine at 23k miles, was having a misfire after installing Cobb S1 Aggressive.
I had run Dinnan S2 for about 12k miles before i went to Cobb. Misfire is now gone! |
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01-09-2013, 09:00 PM | #4 | |
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Quote:
ur a good man - for changing em early. felt a difference after changing mine. night and day. omg - how did they look after 23K - i know mine look like chit. the dealer keep giving me the wrong plugs - n54 ones. finally told them to use my VIN. btw, how do u like ur Cobb tune over the Dinan. is ur throttle response past 3k in 2nd and 3rd feel any different. lot more dramatic in the mid range i'm guessing.
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01-09-2013, 09:01 PM | #5 |
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tune, no tune. how's ur driveablity - same, different, don't care.
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01-09-2013, 09:13 PM | #6 |
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I have enjoyed both tunes, mainly from the added torque with a 6mt.
On the dyno the Cobb S1 gave simular numbers to the Dinnan S2. The Cobb S1 Aggressive added about 20 + lb-ft torque at the low end and 20 to 30 hp at the top end over the Dinnan. Both tunes are very smooth and fun to drive. Last edited by Suds; 01-09-2013 at 10:17 PM.. |
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01-10-2013, 12:20 AM | #7 |
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u dyno'd ur bimmer with the Cobb.
would be interested in seeing the curves. must be fun at full wot. are u finding urself short shifting with the n55 to be in the powerband w Cobb?
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01-10-2013, 12:26 AM | #8 |
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You need a new fuel pump.
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01-10-2013, 12:30 AM | #9 |
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After installing the the stage 2 PPK, my dealership affixed a sticker to the engine which reads "Change spark plugs at 35,000 miles".
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01-10-2013, 12:30 AM | #10 |
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You have 60k on your 2011???
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01-23-2013, 04:26 AM | #11 |
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Who me? Lol.
Long crank - corrected itself. I can hear the pump prime when I unlock the door. It's still holding up- Yes.
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01-23-2013, 11:57 AM | #12 |
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full bolt on and meth, JB4 ISO w/ flex fuel wires
Drivability seems more smooth and throttle is sharper... But I also didn't have a choice, the car was misfiring on old plugs. I think every 20k is a must |
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01-23-2013, 01:50 PM | #13 |
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Damn, and I thought putting 35k on my 2011 in a year and a half was a lot.
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01-24-2013, 11:47 AM | #14 |
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I'd also like to see that dyno with cobb. I've yet to see any independent results yet.
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01-24-2013, 08:26 PM | #15 |
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Interesting. stage 1 PPK sticker I got said 50k miles. Prob trying to avoid changing under warranty...if that's the case, just put 60k miles instead.
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01-28-2013, 01:22 PM | #17 |
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Funny, I just called in to order my set also...and hot damn, that bitch is $34ish just for one plug from bmw!
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