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02-17-2013, 11:42 PM | #1 |
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135is issues at the track...
So I've had my car out several times now and regularly am having drivability issues at race speeds. The car is a 2013 135is DCT, it does have a JB4 tune and BMS intake.
What happens is severe sputtering/power loss when shifting at higher RPMs. Just today however, it professed to throwing a CEL and reduced power mode on me. I shut the car down and re started it immediately, everything was fine again. Makes no sense to me. It is also notable that I tried running the stock tune, bypassing the JB4 completely, and experienced the same issues. Anyone have any input? |
02-17-2013, 11:44 PM | #2 |
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What code is it throwing? JB4 + DP + Meth and no problems here at Big Willow / Button.
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02-17-2013, 11:47 PM | #3 | |
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Just saw your car, my bad. I have a feeling maybe its temp related??? |
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02-18-2013, 12:44 AM | #4 |
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Yeah can't really help you without knowing what code it's throwing. JB4 has a built in code reader I believe, try reading up on that. But would just be easier to get a code reader.
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02-18-2013, 11:53 AM | #5 |
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Well, I don't know what engine your car has or if it has the PPK second radiator and fan. But that kind of thing happens all the time in N54 135i's like my car due to water temperature. Since it always happens to me in a slow section right after a long straight, or right after sitting through a long black flag, I think the fan makes more difference than the radiator.
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02-19-2013, 02:00 AM | #6 | |
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Op has an IS. So n54 with added cooling. |
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02-19-2013, 03:10 AM | #7 |
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135is has a N55 with PPK.
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02-24-2013, 06:46 PM | #8 |
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This is true...
Found out it was some type of Power Reduction Mode triggered by excessive brake fade sensed by the computer. What's weird is there was NO brake fade. Maybe the car senses temp only and my setup is just capable of surpassing those temp triggers without fade? |
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02-24-2013, 07:02 PM | #9 | |
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I've been down to Bryan's shop to grab my exhaust, was one of the first N55's to run the setup. Also always run into him at Bimmerfest every year and we catch up. |
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02-24-2013, 07:04 PM | #10 | |
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02-25-2013, 05:02 AM | #11 | |
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02-25-2013, 06:21 AM | #12 | |
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02-27-2013, 01:26 AM | #13 | ||
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03-01-2013, 01:04 AM | #14 | |
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