3" Scorpion-Exhaust system has arrived...

Discussion in 'Fiesta ST Engine Upgrades' started by pelotonracer2, Jan 16, 2014.

  1. pelotonracer2

    pelotonracer2 Active Member

    The 3" Scorpion exhaust system has arrived and I have unboxed everything and it looks sweet! It looks beautiful and is above average quality (welds and all). I will post pictures tonight of the uninstalled system. It *appears* that the tips are going to be long enough, by my crude measuring tape fitting. If anything they might need to be lengthened 1 inch. I have an appointment with Cobb Plano at 11am tomorrow (Friday) for a base line dyno session and looking into the map differences between 91 and 93 octane tunes. I will then have the system installed and return later in the afternoon for another dyno test of the exhaust system. Looks like the FSWERKs intake will arrive on Monday and I will install it and then go back to Cobb again for yet another dyno session. The only bit of bad news is that I accidently ruined my COBB AP screen when I was taking measurements of the stock system. Chris @ Cobb Tuning is going to send it back to HQ for a refurbish. Turn around will be quick (I hope).
    brian and mrtn like this.
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  3. JP6

    JP6 Member

    Excited to see it installed!
  4. McRib 1s Back

    McRib 1s Back Well-Known Member

    All that sounds great, except the ruined screen part!

    Ruined as in you ran it over? :/
    pelotonracer2 likes this.
  5. mrtn

    mrtn Active Member

    Waiting for those pics.... :p
  6. mossdahaus

    mossdahaus Member

    Make sure to take some sound clips...hopefully better than the ones Scorpion posted.
  7. pelotonracer2

    pelotonracer2 Active Member

    Well sort of, with my body between some gravel. LOL. I put it in the front of my GAP sweatshirt and it fell out and I rolled over it.
  8. pelotonracer2

    pelotonracer2 Active Member

    I'll try... can't promise. But maybe on the dyno
  9. pelotonracer2

    pelotonracer2 Active Member

  10. McRib 1s Back

    McRib 1s Back Well-Known Member

    Oh, I feel your pain. At least you won't break it like that again! :)
  11. McRib 1s Back

    McRib 1s Back Well-Known Member

    mrtn likes this.
  12. RodMoe

    RodMoe Well-Known Member

    Did they send it packed in those nice looking comfy pillows too ?? LOL
    lookin forward to this :)
  13. Smokin

    Smokin Active Member

    What was the cost of the exhaust?
  14. pelotonracer2

    pelotonracer2 Active Member

    It was a huge box and yes there were LOTS of foam pillows! :p
  15. pelotonracer2

    pelotonracer2 Active Member

    List price is $899.00 which is more than others available but I can assure you it IS worth every extra dollar and then some (see my update later in this thread) :D
  16. pelotonracer2

    pelotonracer2 Active Member

  17. pelotonracer2

    pelotonracer2 Active Member

    The tips on the Scorpion system are about flush with the OEM tips. I will recommend to Scorpion that they extend them on US-Spec cars 1" so they just barely protrude out past the valence. Right now they are tucked under the valence like the stock tips. Here's what a Euro spec FiST rear valence looks like: scorpionexh1.jpg
    Kalil likes this.
  18. pelotonracer2

    pelotonracer2 Active Member

    This is a completely bolt-on affair*. The exhaust hanger bushings as supplied, are NOT good. 1. They are too short & 2. they break too easily. So We used the stock grommets (which are still a bit short). Initially, the exhaust tips ended up too close to the rear bumper valence. The tips will need at least a 1" extension to be perfect, although these are in the exact stock location. I am sure on UK spec cars the tips go a few mm beyond the valence and look a bit better.

    Those with a keen eye will notice the * (asterix). Keep in mind, I am pioneering this exhaust system for use on US-spec FiSTs. The front 3 metal hangers on the exhaust system had to be heated up and bent a smidge. The rear hanger had to be replaced completely. It did not allow the tips to be positioned center in the valence and there simply wasn't enough room between the tips and valence, especially when going over bumps (they would definitely touch). It didn't look right and would probably cause the painted plastic valence to melt or discolor. I felt I needed at least 15-20mm clearance between the tips and valence to be safe. The new hanger solved it all. I will be sending that info to Scorpion. Also, the rear cross beam brace clearance was closer than what I would like to see (only 10-12mm), so I added 6mm shims underneath the brace to give the system more clearance. Other than that, the system bolts up and fits like it supposed to. [​IMG]

    Since it was so late in the day, I did not get a chance to put the car back on the dyno (I did get baseline runs in). There definitely seems like an improvement in power and boost lag is =GREATLY= reduced. I will be completely shocked if this system doesn't produce some significant gains. Seems to really feel it's oats more at higher revs (especially after 6300 rpm) than the stock system. For those of you who are worried about this negatively effecting performance being a 3" mandrel bent system, you can safely put that to rest! And the sound... all I can say is WOW! [​IMG] It is definitely louder and has a more exotic, bassy/barotone sound, absolutely NO raspy nastiness & =ZERO= drone at cruising speeds. I'd say the 12-13 decibel increase in noise is spot on with their noise increase claim.
  19. pelotonracer2

    pelotonracer2 Active Member

    I do have baseline dyno numbers for my car and to be perfectly honest, I am not very pleased with the bone stock numbers. I had the car dyno'd at Cobb Tuning and they use a Mustang Dyno (and they seem to be less optimistic than a Dynojet so I am not worried). The gains from the Cobb 93, stage 1 map netted almost 10 hp and 49 ft lbs of torque... @ the wheels. I have not dyno'd the exhaust system yet. That will happen sometime early next week.
    __V__ likes this.
  20. pelotonracer2

    pelotonracer2 Active Member

    Here's a crude shot... tips fill out the exhaust cut out in the valence quite nicely (dual 3.5" tips).

    Kalil and mrtn like this.
  21. pelotonracer2

    pelotonracer2 Active Member

    Dyno'd the car on a Dynojet 224x today and netted 181 hp & 228 pft torque to the wheels with Cobb AP and Scorpion Exhaust system. Back to Cobb for a check against my baseline sometime this week.

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