Any JB4 long term reviews?

  1. IHadToRun

    IHadToRun Senior Member

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    anyone got some info on how it’s been long term and how safe it is for the motor?
     
  2. Akuto

    Akuto Senior Member

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    :bump:
     
  3. Caestus

    Caestus Senior Member

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    I've been using it for a few weeks. SO far so good. I'm also under the impression if you have any issues in the engine the JB4 will shut off. (I could be wrong on this)
     
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  4. OP
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    IHadToRun

    IHadToRun Senior Member

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    That's what i read that if it seems something is out of "parameter" or that seems safe it just cuts out and lets the ecu take back over. How does the engine bay look with the extra wires? Any pictures?
     
  5. Caestus

    Caestus Senior Member

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    I will post some pics for you tomorrow. It seriously is a 5 min install or 5 min uninstall :D
     
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  6. Caestus

    Caestus Senior Member

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    @IHadToRun Here are the pictures. The picture with the arrows are where the plugs to the JB 4 connect to. As you can see the OBD cable runs through the fender and sits next to the ECU.

    upload_2019-9-5_18-41-10.png

    70795C47-A660-45A5-8A83-545FB489941C.jpeg 79051C5C-18E6-4441-B1A9-4892860D91F9.jpeg 468F6F22-209E-414D-A4F5-543AE6216BA3.jpeg 910447AE-081C-43EA-98F4-DABAD73AD7AB.jpeg 2D5BE8D4-9064-4934-B2E2-895BB360F2E4.jpeg
     
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  7. Kekela98a

    Kekela98a Senior Member

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    How does the routing of the OBD plug run?
     
  8. Caestus

    Caestus Senior Member

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    through the fender from the cabin. It's super easy. If you open your driver side door with the hood open and look you can see day light through it.
     
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  9. ExVTEC

    ExVTEC Senior Member

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    3000 miles so far all good, map 2 on 93 oct shell nitro.
    FYI I don't abuse my car. I drive aggressively but don't bounce off the rev limiter or other stupid crap.
     
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  10. Caestus

    Caestus Senior Member

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    I’ve been running Map 5 so far. It’s 1.5lbs more boost and no issues. Ive got about 500 miles
    On this map so far.
     
  11. mdm24

    mdm24 Member

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    2 months or so driving in hot weather in Texas with 93 octane on map 2. No problems and really enjoying the power. Agree that it’s extremely easy to install and unless you are actively looking for it it’s not noticeable under the hood or inside.
     
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  12. Caestus

    Caestus Senior Member

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    Still. It’s so easy to uninstall I’d always take it off before bringing it to the dealer.

    Did you place yours where I placed mine?
     
  13. mdm24

    mdm24 Member

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    Totally agree it’s so easy I wouldn’t take any risk by leaving it on although I doubt any questions would be asked at a dealership unless you were going in for warranty work.
    Yes I think I did mine the exact same way.
    Had one on a golf R previously and it was a much bigger pain you had to lift the car and get underneath to access one of the plugs.
     
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  14. Caestus

    Caestus Senior Member

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    That sounds horrible. I’m happy with how easy it is here I mean... for how easy it was. I was like no way it’s actually providing this much power. But I lm pretty sure it is. I’m gonna get a Rear Motor Mount soon and then Dyno it.
     
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  15. OP
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    IHadToRun

    IHadToRun Senior Member

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    Wow... I’m extra jealous now... I wasn’t aware that I couldn’t get this in CA.... :(
     
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