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This is a discussion on COBB Tuning within the Tuning: Electronic Engine Management forums, part of the Tech & Modifying & General Repairs category; Originally Posted by bz24 Which wide and O2 would you recommend? There are 3 typical options: 1.) AEM UEGO 2.) ...

  1. #16
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    Quote Originally Posted by bz24 View Post
    Which wide and O2 would you recommend?
    There are 3 typical options:
    1.) AEM UEGO
    2.) Innovate LC-1
    3.) PLX WBO2

    Zeitronix also produces WBO2 sensor IIRC, but I haven't seen one in some time.

    If using Cobb AccessTuner Race to datalog WBO2, I would stick to AEM or Innovate.
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    Quote Originally Posted by Heide264 View Post
    You can add a down pipe with a nameless exhaust, without removing the axle back. I started with a Nameless axle back actually on my 5 door. When their mid-pipe came out, I bought one. I use an invidia catless down pipe. You can piece your own system together, just be careful to verify fitment between the various pieces.
    So the fitment between my Nameless axle back and the Cobb down pipe should work?

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    Registered User Terminal Kuz's Avatar
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    The Cobb downpipe will not reach the axleback. If you had a catback then yes it would but with the axleback theres still the portion from the midpipe to axleback you will need to buy or keep if you want. The Cobb downpipe replaces the stock downpipe and midpipe in one piece.
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    Quote Originally Posted by Terminal Kuz View Post
    The Cobb downpipe will not reach the axleback. If you had a catback then yes it would but with the axleback theres still the portion from the midpipe to axleback you will need to buy or keep if you want. The Cobb downpipe replaces the stock downpipe and midpipe in one piece.
    I ran the stock mid pipe with my axle-back. I then swapped out the stock mid pipe. I then swapped out the down pipe for an invidia.

    I think all three are interchangeable on an 08+ hatch at least. Does the cobb down pipe differ in length from the invidia? The invidia took out both cats in there, so I wouldn't imagine the Cobb was any longer to include them.

    As a warning, I believe the Cobb does taper down to 2.5" towards the mid pipe. I don't think this will be an issue if you are re-using the stock mid pipe section, but if you upgrade to a full 3" mid pipe, you'll need to get a different down pipe.
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    IIRC, the Cobb DP tapers to 2.5in at the flange though...mating up to a 3in CBE isn't terrible as the smaller output going into a bigger inlet isn't as much prone to an exhaust leak. At Stage 2 power levels, the 2.5in taper isn't of much concern in regards to bottlenecking either.
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    Quote Originally Posted by zax View Post
    I'm honestly not sure how the Cobb EBCS fares. I do, however, know first hand that my GS EBCS is a complete PITA to tune. It took over 15 iterations to hit and hold my target boost properly on my stage 2 tune. And I don't think I ever got it 100%... as I upgraded my turbo in the next few weeks. I've heard the Perrin and GM units are much easier to tune, but I have no first-hand experience.
    What's the main difference between stage 1 and 2? How do you know which one you can do? Do you have to use stage 1 for a little before you go to stage 2?

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    Quote Originally Posted by bz24 View Post
    What's the main difference between stage 1 and 2? How do you know which one you can do? Do you have to use stage 1 for a little before you go to stage 2?
    AccessPORT Off The Shelf Maps
    the map notes from cobb will tell you exactly what you need.

    cliff notes:
    stage 1: tune
    stage 2: downpipe & tune.

    you can either go stage 1 first, then stage 2
    or go straight from stock to a stage 2 setup

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    Quote Originally Posted by bz24 View Post
    What's the main difference between stage 1 and 2? How do you know which one you can do? Do you have to use stage 1 for a little before you go to stage 2?
    Stage 2 involves installing a 3" downpipe.
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    Quote Originally Posted by zax View Post
    Stage 2 involves installing a 3" downpipe.
    So I just purchased my AP, SF Intake, AME O2 Sensor and Cobb downpipe. I can go to stage 2?

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    Quote Originally Posted by bz24 View Post
    So I just purchased my AP, SF Intake, AME O2 Sensor and Cobb downpipe. I can go to stage 2?
    Sure sounds like you can.

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    Quote Originally Posted by 11blackSTi View Post
    Sure sounds like you can.
    I'm down like chinatown. Thanks.

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    Quote Originally Posted by bz24 View Post
    I'm down like chinatown. Thanks.
    Like these guys said, the only thing you need to go stage 2 is the aftermarket downpipe and stage 2 cobb map.

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    Quote Originally Posted by zax View Post
    There are 3 typical options:
    1.) AEM UEGO
    2.) Innovate LC-1
    3.) PLX WBO2

    Zeitronix also produces WBO2 sensor IIRC, but I haven't seen one in some time.

    If using Cobb AccessTuner Race to datalog WBO2, I would stick to AEM or Innovate.
    I already have a SMY cluster, Defi boost gauge, and an Defi oil gauge. Would you still say to get the WBO2 sensor? Where could I put it?

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    Re: COBB Tuning

    Quote Originally Posted by bz24 View Post
    I already have a SMY cluster, Defi boost gauge, and an Defi oil gauge. Would you still say to get the WBO2 sensor? Where could I put it?
    A wideband O2 sensor is one of the most important installs if your car is modified IMO.

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    Quote Originally Posted by zax View Post
    A wideband O2 sensor is one of the most important installs if your car is modified IMO.

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    So do I need just the sensor or the actual gauges also? I just don't have a place to put the gauge because I already have those other two gauges in my SMY cluster.

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