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      10-07-2016, 10:03 AM   #1
HOUM5
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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!
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      11-01-2016, 09:44 PM   #2
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Abr Houston is the place to get it fixed up
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      11-01-2016, 10:33 PM   #3
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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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Quote:
Originally Posted by HOUM5 View Post
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!
I work for a BMW service shop. We deal with a lot of M cars. We are close to downtown. Shoot me a pm should you need anything.
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      12-25-2016, 03:00 AM   #5
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Quote:
Originally Posted by Spinny02 View Post
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.
^^^^ Check this for sure
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      12-26-2016, 07:34 PM   #6
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Quote:
Originally Posted by HOUM5 View Post
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!
Alex Noll
832-797-9114
Owner of ABR
Abrhouston.com
Facebook/BMWdoctor
Instagram.com/abrhouston
Twitter.com/abrhouston
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      01-20-2017, 07:20 PM   #7
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please first try to clear adaptation on DME , and be sure injectors adjusted and saved with same value
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      01-20-2017, 09:59 PM   #8
boots
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Advantage BMW is another good place to take your car
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