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10-18-2019, 09:29 AM | #1 |
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Carbon cleaning time?
Pushing along with 89k on the odo, the car feels great in every regard except i feel it has lost in the power department. I know I'm due for plugs and a new air filter soon however i wonder if that would do the trick or should i look into get the valves blasted clean? Don't get me wrong it still pulls hard especially in 2nd gear but i feel sometimes down low it seems to feel a bit weak.
Am i going crazy?
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2020 330ix-Msport Past- 2013 135i 2011 135i |
10-18-2019, 11:07 AM | #3 | |
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10-19-2019, 06:57 PM | #5 |
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Plugs were changed at 50k miles.
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2020 330ix-Msport Past- 2013 135i 2011 135i |
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10-19-2019, 09:55 PM | #6 |
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Guy pulled almost 25hp more just from a valve cleaning, have seen upwards of 40hp on other forums:
https://www.e90post.com/forums/showthread.php?t=1099996 The valves can get pretty bad if you've never had em cleaned. Definitely recommend with your mileage. |
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10-20-2019, 12:15 PM | #7 | |
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10-20-2019, 03:58 PM | #8 | |
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10-21-2019, 08:45 AM | #9 |
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Had my N54 blasted at about 60k and went into garage to see the before and after results and it was a big difference, when done the ports looked practically new when before there was definitely a buildup. Driving home I noticed an small improvement but not as much as I thought there would be. My opinion was likely skewed because just the week before I had installed a Cobb tune and wasn’t as familiar with the newly acquired power so didn’t have a good reference to base the comparison on. Looking at the before and after it’s clear that flow is improved substantially.
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