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| 05-26-2016, 05:39 PM | #1 |
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Power Drop a Week after Dinan Stage 3 Install
So, I picked up my 2016 M235 from the dealer about a week ago after they installed the Dinan Intercooler and Stage 3 flash. It was running extremely well until today. Torque Pro was showing 400hp & 454ft lbs, and just shy of 12psi. Today, I noticed it was significantly slower, especially at lower RPMs. It was only pushing about 10psi and registered a max of 385ft lbs and 375hp.
I'm scheduled to take it in to the dealer next Thursday (because the dealer is far from where I live). I'm thinking boost leak. They didn't pressure check the piping after the intercooler install. The temperature is about 20 degrees warmer, but it shouldn't have THAT much of a performance hit. In my experience tuning turbo'd cars, they run higher boost in hotter temperatures because the air is less dense. Thoughts?
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| 05-26-2016, 05:48 PM | #2 | |
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| 05-26-2016, 05:51 PM | #3 |
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Not according to TorquePro.
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| 05-26-2016, 06:01 PM | #4 |
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I actually tried calling Dinan Tech support before calling the dealer. No one ever seems to answer the phone over there.
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| 05-26-2016, 06:05 PM | #5 |
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Cracked charge pipe?
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'11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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| 05-26-2016, 06:07 PM | #6 |
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If that's the case, the dealer would have done it during the install. It's possible I guess.
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| 05-26-2016, 06:27 PM | #7 |
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Gettin It Figured Out
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Diverter Valve....replace with GFB DV+
OEM weak link like the Charge Pipe Edit: shot in the dark .
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| 05-26-2016, 06:30 PM | #8 |
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Could be a million things, take it to the dealer and let them check it out
From what you are describing sounds like a boost leak
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| 05-26-2016, 06:41 PM | #9 |
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Bypassed the tune, then switched back to S3. It's also cooler outside. Last run was 100 less ftlbs and about 30 less hp. Boost was at 10.3psi.
I swear I can faintly hear what sounds like pressurized air coming from the front end (not spooling or normal boost/blowoff noises. I know the difference). Guess I'll have to wait until next Thursday to find out. Hopefully, it's a simple leak from a loose clamp. |
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| 05-26-2016, 06:42 PM | #10 |
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On a side note, Dinan customer service is amazing.
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| 05-26-2016, 09:11 PM | #11 |
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Welcome to the world of heat soak.
If you have an OBD reader, check your intake temps. 85 degrees on a hot day may mean nothing, but your intake temp matched with maybe sitting in some traffic... that will give you some pretty high intake temps sufficient enough for some proper heat soak. |
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| 05-27-2016, 06:21 AM | #12 | |
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| 05-31-2016, 04:05 PM | #13 | |
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| 05-31-2016, 04:25 PM | #14 |
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never had power loss while running stage 3 dinan box.
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| 05-31-2016, 05:58 PM | #15 |
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When I first had it installed, there was a huge surge of torque around 3500rpms. Now the torque is peaking at 5500rpms.
I'm taking it to the dealer on Thursday to have it checked out. |
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| 06-02-2016, 05:35 PM | #16 |
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Turned out it was a substantial leak in the hose that connects the crankcase to the intake (on the intake end of the hose). Replaced the hose and now it's back to beast-like.
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| 06-02-2016, 05:36 PM | #17 |
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I'm shocked it didn't throw a code. So we're the technicians.
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