Yes, you need an EM for engine mods - Page 6
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This is a discussion on Yes, you need an EM for engine mods within the Tuning: Electronic Engine Management forums, part of the Tech & Modifying & General Repairs category; Does a tuner doing a dynotune need to know the specific mods done to your car to create an AP2.0 ...

  1. #76
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    Does a tuner doing a dynotune need to know the specific mods done to your car to create an AP2.0 map? I am currently talking to a pro-tuner to get an AP tune done on my '04 Sti , and he insist that he does not need to know the mods I put into my car. Does that seem correct?

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  3. #77
    Moderator Donkey's Avatar
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    I would think he would want to know the mods that maybe are not readily noticeable. If its just a "stage 2" Protune then it's really not to critical as he can just look at the car and see the mods.
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  4. #78
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    Maybe so but he wouldn't be able to determine items like injectors or their flow capacity. Further I do believe it would be a little beyond a stage 2 tune, since they are injectors to tune for.

  5. #79
    Moderator Donkey's Avatar
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    Quote Originally Posted by Donkey View Post
    I would think he would want to know the mods that maybe are not readily noticeable. If its just a "stage 2" Protune then it's really not to critical as he can just look at the car and see the mods.
    You didn't mention any specifics. The more information given,the better we can assist you.
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  6. #80
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    Excuse me If this Has already been answered...

    If I were to add a Turbo Back Exhaust, and a 16g turbo, and were to just get a Cobb Acessport instead of a pro tune at a shop, would that work?

  7. #81
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    Quote Originally Posted by RikRCar21 View Post
    Excuse me If this Has already been answered...

    If I were to add a Turbo Back Exhaust, and a 16g turbo, and were to just get a Cobb Acessport instead of a pro tune at a shop, would that work?
    You're going to need more supporting mods to run that turbo. If you go the AccessPort route, make sure you follow all map notes to the letter.
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  8. #82
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    Quote Originally Posted by Anub1s View Post
    You're going to need more supporting mods to run that turbo.
    What Kind of Supporting mods would you suggest?

  9. #83
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    The map notes will list the parts supported.
    WRX Info Links, Courtesy TheJ
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  10. #84
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    I looks like it only supports vf34, vf39, and vf40 turbos? I' new at this, And would love to get a VF 24 In but this will mean i will need a different form of EM to support a tune for the VF 24?

  12. #86
    He simply abides. SD_GR's Avatar
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    If it's not on the list you have two choices: use another form of EM or have someone make you a custom map. At that point you have a choice of whether to use a Cobb setup or not (and $ factors in).
    WRX Info Links, Courtesy TheJ
    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
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  13. #87
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    New to diy EM idea and WRX's

    So while looking at the COBB maps, specifically,

    cobb . wrx accessport . map listing

    they have AEM in their map options. This means that I can use an AEM intake correct? The intake I am considering is

    AEM 21-478WR - AEM Cold Air Intake System - AEM Online Store

    Thanks for the help! This sticky has been really helpful

  14. #88
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  15. #89
    Admiral Ackbar the 1st mycologist's Avatar
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    Can we get a few edits in here -

    The TMIC thing as Donkey pointed out relative to pressure drop, and I disagree with the statement on the potential benefits.

    Bugeyes do not require a tune for a DP.

    The BOV info is not true in all cases as stated by another poster. I think the new ones are worse.

    The part on Cobb/opensource etc. has its own sticky, we should just put a link.
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  16. #90
    Registered User Rich E dee's Avatar
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    I read on the first post that a tune is not needed with an aftermarket BPV but what if I decided to run it at 50/50? I haven't seen that question posted or answered.

    I'm interested in the COBB BPV for my 2014 but not if it needs tuned for. Thanks for any help.
    2014 Base WRB Hatchback
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