Recommended Performance upgrades

Discussion in 'SRT Hellcat Performance' started by 392shaker, Jan 31, 2016.

  1. 392shaker

    392shaker Silver Member

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    I am looking to bump some more horse power from my new Hellcat. I have been reading a lot of different posts on weather exhaust upgrade or a better CAI or Pulley swap. What will give me more bang for my buck. I read a lot of mixed review on CAI with high IAT temps is this still the case? I am looking in 50 to 100HP boost what wold people recommend? I was thinking of upper pulley PMC and with a tune? I will be running 94 Octane in Canada at about 600 ft above sea level give or take a 100 ft
    Thanks
     
  2. Pa hellcat

    Pa hellcat Hellcat Member

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    Upper pulley and tune
     
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  3. HellScoot

    HellScoot Silver Member Hellcat Car Club HCC Charter Member

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    There is more to this.. CAI is worthless without a tune. Pulley requires a tune. If you are going to race it you will need to consider a driveshaft and tires. There are also other simple mods like a 180 degree thermostat based on pump gas that's about where this takes you. You may consider a rear diff. I have been working on this for a couple months so if you are anything like me kind of want to get it all done at once. If just a 30 to 40 Hp at the rears a good tune should do the trick.
     
  4. NorCaletch19He77Kat

    NorCaletch19He77Kat Silver Member

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    1.) feather the throttle
    2.) lower back air presure, raise front tire pressure.
    3.) if #1 & 2 don't help, buy an airplane.
     
  5. Aaron Vogel

    Aaron Vogel Silver Member

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    Catch Can :p
     
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  6. Sepipr21

    Sepipr21 Silver Member

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    I heard that's worth about 100 HP. Lol
     
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  7. Sepipr21

    Sepipr21 Silver Member

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    I am going to do, upper pulley, clutch, Tune. But I'm going to wait a little bit more. I even bought the extended warranty..Bahh...
     
  8. BobNE

    BobNE Rookie

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    HellSoot,
    What does a 180 degree thermostat do for performance?
    thanks
     
  9. hemicat

    hemicat Active Hellcat Member

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    I would guess that because it keeps the engine water temperature cooler (as opposed to a 192 degree thermostat) which thereby means the engine will run cooler which will help with the inter-cooler temperature which will help with combustion air temperature.
     
  10. HellScoot

    HellScoot Silver Member Hellcat Car Club HCC Charter Member

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    Bob exactly that if you lower engine operating temperature and with the aid of a supercharger the compressed air at a lower temperature would help to make more power. Exactly how much more I could not say but for a very low cost it is a good mod along with others that you might be planning.
     
  11. Sepipr21

    Sepipr21 Silver Member

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    It does nothing. Unless you tune for it. Thermostat will not lower the temperature unless you change the parameters that the fan turn on it will do absolutely nothing.
     
  12. HellScoot

    HellScoot Silver Member Hellcat Car Club HCC Charter Member

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    Correct any engine mod to be recognized with little exception needs to be tuned for. Which makes it difficult unless you baseline with a tune and dyno and measure each change but most will do the stock dyno and then after all the upgrades you do. So if you are going to do a tune then a thermostat along with other items make sense.
     
  13. Racist Cat

    Racist Cat Silver Member

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    Bang for buck?

    Pulley and tune.
    Stop there.
     
  14. Link

    Link Silver Member

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    change to a 3.09 diff if it is a challenger, no tune needed
     
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  15. hemicat

    hemicat Active Hellcat Member

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    Very happy with the results when I got the new diff a few weeks back. There are many threads that you can search to get opinions of others that have done this already.
     

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