Downpipes

Discussion in 'Fiesta ST Engine Upgrades' started by mcmnicka, Mar 15, 2014.

  1. mcmnicka

    mcmnicka New Member

    Hey everyone new to the forum been looking at parts for myself and a friend of mine. I know I found a downpipe some where maybe puma speed but I'm curious as to advantages and disadvantages of catted over catless apart from price.
     
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  3. captainmorbid

    captainmorbid Active Member

    Catted is greener. High flow cat is better flow for the exhaust, good increase in power, still possibly "legal" for street use.

    Gutted is for race car. Highest flow, most power production. Not street legal.
     
  4. mcmnicka

    mcmnicka New Member

    Well yes but I live in michigan so we don't really have any emissions tests so not of high importance, but would you get more torque to horsepower on a catted dp or on a catless? More lbs and less hp from a catted or is that backwards?
     
  5. mcmnicka

    mcmnicka New Member

    Would there be a huge difference between the two on a noise side? Reason asking my car has a test pipe and it's a noticeable difference on WOT for noise but t idle and just cruise it's not that loud
     
  6. captainmorbid

    captainmorbid Active Member

    We don't have emissions testing in Alberta, but it's illegal to replace emissions related equipment in Canada, for street cars. A catless down pipe is louder, and will gain more horsepower and torque on a turbo engine, though tuning would be required to maximize the benefits of increasing exhaust flow. It would be hard to guess how much without dyno-testing.


    Sent via poles, wires and telegraph 2.
     
  7. mcmnicka

    mcmnicka New Member

    Yes but is any one going to check it? Doesn't the Cobb AP have a shelf map that has a tune for a new DP. I know it's not the same car but Cobb has a shelf tune for the wrx with intake exhaust and DP just curious as to if the fiesta had a similar map or set up yet. Also there is a video of the fswerks cat back with a Cobb DP I wonder how long till that's out :D
     
  8. captainmorbid

    captainmorbid Active Member

    I'm not sure if Cobb has a down pipe option yet. But I'll bet they will, and it'll be shelf tune supported.


    Sent via poles, wires and telegraph 2.
     
  9. mcmnicka

    mcmnicka New Member

    Hmm should be interesting to see what they come up with. Thanks a lot for your information. Curious to see if anyone has a done a downpipe on the forum yet, I wanna see other peoples opinions on daily driving with them
     
  10. spangenb

    spangenb Active Member

    I expect to order a 3" catback and catted downpipe from 2J Racing this week. With any luck I will have it all installed by the end of April. I plan to visit a tuner in Buffalo for a custom tune once I have all the upgrades done (Injen intake on the way too).
     
    djdennehy likes this.
  11. joe@2j-racing

    joe@2j-racing Active Member

    We will post a dyno of our catted and race (no cat) downpipe tomorrow.

    Here is our catted downpipe and 3" catback dyno. I prefer 4th gear run below:


    fiesta gearing (2).jpg fcb1.jpg fdp1.jpg fdp4.jpg
     
    Kalil likes this.
  12. RodMoe

    RodMoe Well-Known Member

    Looks good Thanks
     
  13. joe@2j-racing

    joe@2j-racing Active Member

    Rod, my crash beam clears just fine with the 3". Did you put yours back on?
     
  14. RodMoe

    RodMoe Well-Known Member

    Yes I have mine on with only a washer on each bolt to shim for now till I get back under and look at it soon now that Spring is here (at least on the calendar) lol
     

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