SRT Active Exhaust disconnected, No check engine light (Solved).

Discussion in 'SRT Hellcat Performance' started by RdRang95, Apr 12, 2015.

  1. RdRang95

    RdRang95 Rookie

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    So I installed the SLP Loudmouth catback exhaust from my 2012 Challenger SRT 392 on my new 2015 Challenger SRT 392. However, like everyone else, I was left with what to do about the active exhaust setup. Disconnecting it completely throws a code and plugging it back in without being attached to the stock valves throws a new set of codes. I watched the forums for a bit and saw Zoomers had released a system the supposedly solved the engine light problem by just plugging them in and tying them up, which I knew didn't work. I emailed them about it but no one got back to me. So I fixed it myself.....
    [​IMG]
    Using toggle bolts I was able to create stops for the motor. I used a nail that I clipped the head off of to replace the spring in the original setup. The motor isn't concerned about where it stops, just that it stops. Without resistance it just free spins which is what throws the code because it thinks something has failed. Simply install the toggle bolts through the existing bolt holes like in the photo. one thing you cant see is that I etched four very small notches into the plastic ridge around the edges so the toggle could sit in them and keep them from moving. The motor is fairly strong. The notches are super tiny and won't affect anything on the unit. Tied it up out of the way and no light since. It's not the fanciest, but it works until someone comes up with a tune or a device to fake out the pcm.
     
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  2. RdRang95

    RdRang95 Rookie

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    Also here's a clip of the exhaust for anyone interested. The cars warmed up it was just really cold that day.
     
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  3. B5 Blue

    B5 Blue Platinum Member

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    nice
     
  4. Carnage

    Carnage SRT Hellcat Supercharged Moderator Staff Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    Nice speaker broke on my phone lol
     
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  5. Tammie

    Tammie SRT Hellcat Moderator Staff Member Gold Supporting Member

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    Way to Macgyver that shizzy and make it work!!! Thanks for sharing. Well done!:D
     
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  6. RdRang95

    RdRang95 Rookie

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    :D
    Thanks guys. I tried to make a plate out of some thin sheet metal first with some tabs as stoppers. But the motor base is too uneven and only one bolt hole lined up nicely. This soultion was faster and worked juat as well. I'm going to try to trace the wire back a bit and see if maybe it runs out of the trunk or something. The motors are tied up outta the way but I'd feel more comfortable with them out of the elements over the long term.
     
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  7. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    Very creative.
     
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  8. redlinegw

    redlinegw Rookie

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    got any better pics?
     
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  9. B5 Blue

    B5 Blue Platinum Member

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    Bigger pic needed
     
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  10. RdRang95

    RdRang95 Rookie

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    [​IMG]

    Sorry been a way for a little bit. Here's a MUCH larger photo of the setup. And an update: Had this Installed since March, no codes or failures of the mod at all.
     
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  11. redlinegw

    redlinegw Rookie

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    Thermal R&D did the same setup with our Hellcat and it still threw a code, however they have 10 SRT 392 cars with this setup and no code. We had to put the stock exhaust back on our Hellcat until it gets figured out. I think something is different between the Hellcats and the SRT 392 cars.
     
  12. RdRang95

    RdRang95 Rookie

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    Seems strange. The exhausts are Identical on the 392's and Hellcats. I wonder if maybe the hellcat needs more information about the position of the valves rather than just whether it stops at both ends or not. Seems unlikely though since the valve motors are the same and most likely broadcast the same amount of information.
     
  13. redlinegw

    redlinegw Rookie

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    Not sure, it is frustrating because the Thermal exhaust sounds so much better! I wonder if there are any other Hellcats on here with custom exhaust that don't have the check engine light on. I sure wish someone would come out with something that could just plug in and be done with it.
     
  14. stoneipa

    stoneipa Rookie

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    What does the valve actually do?
     
  15. Milspec

    Milspec Silver Member

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    I think it opens the exhaust up more during acceleration.
     

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