resonator delete redux

Discussion in '5.7L Exhaust' started by cowdoc, Jul 13, 2010.

  1. cowdoc

    cowdoc Member Site Supporter Level 5 Site Supporter Level 2

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    Guys (and gals),

    Last summer a thread ran where a concern was raised about welding on the vehicle's exhaust system, and its possible harmful effects on the air bag sensors. It was recommended to unplug the sensor to avoid damage (from what? electrical field?). Are these still valid concerns when eliminating resonators or otherwise modifying the exhaust system?
     
  2. jeff

    jeff Member

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    My exhaust shop replaced mufflers and deleted resonator pipes and welded everything back in place, that was over 25,000 miles ago with no problems.
     
  3. cowdoc

    cowdoc Member Site Supporter Level 5 Site Supporter Level 2

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    Yes, all this talk of resonators and no mention of the theoretical dangers of welding on the air bag sensors. Apparently it's only with an arc welder and not oxy/acetylene that could be problem.
     
  4. TXRepublic

    TXRepublic Member Military

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    Unless it's only done with oxy/act gas welding, any mig/tig/stick welding makes a arc. There is certain things that can be affected by the electrical field produced from arc welding, but I don't know exactly what on our cars that would be. Best bet is to take the part off the car, then do your arc welding. If you absolutely have to weld on the car, make sure your ground is put as close as possible to the part you are welding on. Disconnect the battery, and cover anything that would be affected by the sparks or heat from the welding. Even so, I wouldn't weld on the car, just too many computer related parts. Take the part off, do the work on the bench. Makes the welding alot easier, and look alot better.
     
  5. chizzle1

    chizzle1 Active Member Military

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    As mentioned, if the ground electrode is within a few feet of the welding tip their won't be any ill effects since the path is so short.
    I have yet to hear of any exhaust shop removing electrical compenents when installing / removing exhaust systems.
    If you hooked the ground electrode to the chassis and then attempted to weld on the exhaust you might have issues.
     
  6. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    has any1 done this:

    removed resonators and mufflers and put aftermarket mufflers where the resonators used to be?

    i want to do the reso delete mod, i can not stand that "str8 pipe" sound. i was hoping to remove both the resos and mufflers and have some flowmaster super 40s welded in where the reso used to be.
     
  7. chizzle1

    chizzle1 Active Member Military

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    ^ you have a 6 speed, the resonator delete doesn't give it a straight pipe sound. Sounds more like cherry bombs or walker glass packs during acceleration, and nice mellow tone at idle (that you can actually hear).
    Try it before you dump money into new mufflers.
    Regarding mounting the mufflers in the rear of the car: might help cancel drone but not sure how loud it would be inside. With the cats in place it shouldn't be too bad.
     
  8. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    sorry for the confusion,

    i can not stand straight pipe sound, cherry bombs, glass pacs or any of that. im hoping that by removn the reso and mufflers and havn new mufflers welded in where resos were that the new space created from motor-exhaust(by movn mufflers to the rear) will elimninate that sound. deep throaty sound is what im lookn for.
     
  9. chizzle1

    chizzle1 Active Member Military

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    good luck getting that sound and still being able to keep it quiet in the cabin.
    Let me know how the drone is with the mufflers mounted at the end of the exhaust line, my wife's Hemi has a magnaflow setup and drone during warm up is pretty bad.
     
  10. james

    james Member

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    There's a video clip I think on YouTube of someone who put flow super 40s in place of the rear resonators. I don't recall what he did with the stock mufflers, if he left them in or not. Alternatively try putting the super 40s in place of the stock mufflers and run the blastin bobs glasspack kit for your tailpipes, or, just buy a nice cat back system, maybe the Flowmaster ForceII if you're concerned with interior noise and budget.
     
  11. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    Cabin noise is not a concern for me, i actually kind of like it.
     
  12. chizzle1

    chizzle1 Active Member Military

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    Being that the stock pipe diameter is 2.5" ID then why spend the extra coin on a full system? Replacement mufflers and a blastin bobs resonator eliminator kit (non-glass pack type) would get you the same sound & performance for cheaper.
     
  13. chizzle1

    chizzle1 Active Member Military

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    I can deal with it, but the 'cool' factor wears off about 2 hours into a trip.
    My truck has plenty of interior noise, so if I'm wanting that i drive it.
     
    bigsnake likes this.
  14. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    Never intended on buying a full kit. 2 super 44s and no resos. Thats all.
     
  15. neidan

    neidan Active Member

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    I think I know what you are looking for and it's not the glass pack that is the issue. Heck the glass pack is what we used back in the day... I'd say remove any H pipe or X pipe you may have in your system. You'll loose a few HP but it gives that old each cylinder firing sound. Next put two short glass packs same size as your exhaust someplace about under the passenger compartment. Cherry bomb makes an 8" one. or some Purple Hornies. or the like. Then split the distance between the cat's and the exit. The cat's will still have some effect on the sound but if you get very short Glass Packs it should work out ok. It will drone at some RPM though. I'm guessing 2 - 2.5K Just like it did back in the day...

    Tim
     
  16. williams rt

    williams rt Active Member MOTM Winner! Deep South Mopars

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    There is a member hemijay I believe did the same thing check with him on how he liked it? It should sound fine, but you may try the reso delete before the muffler change as the 6 speed rts have some nice sounding free flowing mufflers from the factory.
     
  17. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    Yeah a bud of mine has the bb res delete kit with stock mufflers and i hate it..lol. I am hoping that by using the flowmasters and moving the mufflers to the rear that it will give me the tone i want.
     
  18. williams rt

    williams rt Active Member MOTM Winner! Deep South Mopars

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  19. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    just sent hemi jay a message, thanks.
     
  20. MaJoR LeAgUe InFiDeL

    MaJoR LeAgUe InFiDeL Active Member Deep South Mopars Military

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    ok, well i called a shop and for a little over 300 bucks i am getting (2) super 44s installed and the resos deleted. will post a vid monday after i get it done.
     

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