10-07-2016, 10:03 AM | #1 |
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Houston BMW Service
Hi All
New forum guy here... recently purchased stock 2014 M5 Alpine CP. Already had DTM issue due to a single injector problem and now car is in shop again for what feels like throttle or turbo lag after the injector repair. Dealer thinks it might be cats. Anyone have issues with partially clogged or restricted cats? I'm surprised at these issues on a relatively new car. Also can anyone recommend a good M5 service rep or tech in Houston? Thanks! |
11-01-2016, 10:33 PM | #3 |
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Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
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Check the small hose under the car that plugs in to a small valve just behind the exhaust tips/mufflers. If this hose is not connected ( maybe because the car had a mother exhaust at one time and they never plugged it back in) the the car will experience what feels like turbo lag. It's tied in to the turbos and uses the pressure to open the exhaust valve when high boost.
We have had a number of forum member have this issue when changing exhausts.
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12-25-2016, 12:07 AM | #4 | |
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12-25-2016, 03:00 AM | #5 | |
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12-26-2016, 07:34 PM | #6 | |
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