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Thread: Dinan ECU Tuning Question

  1. #1
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    Dinan ECU Tuning Question

    Hi Everyone,

    My E46 M3 came with a Dinan intake and the Dinan Stage 3 software. Now I have no problems with how the car runs, my issue is with the intake itself. It is a PITA. It needs to be removed completely to do minor engine work. The filter is also near impossible to take out and put in. Almost every time I have to work on the car its an extra hour just to deal with that stupid thing. Rant over.

    My question is, if I remove the Dinan intake and replace it with an OEM intake with a K&N filter, will the car continue to run smoothly or will I have to get it re-flashed?

    Thanks

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Can you post a picture of the intake, for it sounds more like an Alpha-N type.
    Darin
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  3. #3
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    Perhaps I should have been a bit clearer. It is a Dinan cold air intake, not the intake manifold. Here is a picture (please excuse the dirty engine).

    IMG_20190611_084858.jpg

  4. #4
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
    Join Date
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    16 220i 05 325it 05 M3
    In order for Dinan to make it a true cold air intake, they had to put that steel box in there. It might just be worth going back to the stock airbox, just for simplicity of working on the car.

    The drawback would be that the car is tuned for a bit of extra air going into the motor, so you may have to lose the tune as well.
    Darin
    Current:
    16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
    Past:
    95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
    84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
    91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
    82 528i euro Saphire Blue Met/Blue Leather RIP
    79 525 euro Green/Green RIP
    79 318 Silver/Black - The first one that got it all started
    M-Flight Member

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