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2015 – 2016 Mustang GT 5.0 4v Twin Turbo System

4.63 out of 5 based on 16 customer ratings
(16 customer reviews)



Throughout the 2015 year at On 3 Performance we have been working with a like new 1,000 mile 2015 Mustang 5.0 GT.  We started with already high expectations as we already have proven and had a great twin turbo system for the earlier coyote 5.0 cars.  The 2015 body changes created a problem for us as the 11-14 turbo system wasn’t going to work on the new application.  So we went back to the drawling boards and had to design a new system.

To begin the design, we started at the cylinder heads and made a new tubular turbo manifold to hold the two On 3 Performance 55 or 61mm turbochargers.  On most systems we design, we use a typical 4 bolt t3 or t4 flange.  With this new system, we went to a new stainless steel exhaust housing which is Vbanded In and out.  This is a much nicer way to mount turbos and allows for more adjustment.  You will also see an increase in power going with this style house as they have better flow characteristics over the other square 4 bolt design.  To exhale the spent gases, each kit will have twin 3″ 304ss turbo back downpipes(16 gauge).

Since the turbochargers are low mounted on this system, it will require the use of a scavenge pump which is provided with the oiling system included.  There are a lot of pumps on the market and we wanted nothing but the best.  Since they run the whole time the car is on and without it operating, it will cause a turbo failure.  We decided to go with a pump maker out of Italy, one of the highest quality units we have tested.  They can be found on almost any Nascar racing so I believe if they can handle their specifications, we should be more than happy with it.  By using the pump, we return the oil simply back up to the custom billet oil fill cap.  This way you are not having to tap your oil pan, most people really like this aspect of running a scavenge pump with the turbos.  Also with the turbos being mounted at the level of the oil pan, air filtration must be addressed.  Some throw filters on the turbos and call it a day, thats far from acceptable when potentially exposed to the elements.   We developed full length ducting up to the front of the bumper.  So each turbocharger is then pulling cold, fresh air directly from behind the front bumper area.  Moving the air out of the turbochargers, we have all aluminum, hard intercooler piping to direct it to the intercooler.  The intercooler itself was as large as we could fit behind the front bumper opening without having to cut the car in any way.  Its physically size has a 3.5″ bar and plate core with a volume larger than some of our previous TT intercoolers already proven to be efficient over 1,200rwhp.  Up to the throttle body we have a 3.5″ charge pipe which will retain the factory MAF.  In most cases that are ~900-1000rwhp or below, there will be no maf upgrade required if the calibrator is capable of the tuning.

Key Features:

  • Multiple Turbocharger Options
  • Stainless Steel Cast Exhaust Housings Standard
  • Custom Designed Oil Scavenging System
  • Full 3″ Stainless Downpipes
  • 600 – 1000hp
  • Dual Ceramic Ball Bearing Options
  • All Bead Rolled Cold Side Tubing w/ T-bolts
  • Retain “Factory-Like” Driving Characteristics
  • No System Offers What We Do For The Price, Period!


Shipping:  The shipping is to the lower 48 USA states only and will be $125

  • $0.00

Product Description

Each Kit Will Include:

  • On 3 Performance 55mm Journal Bearing Turbochargers (Ceramic Ball Bearing Upgrades Available)
  • On 3 Performance Stainless Steel V-band Inlet / Outlet Exhaust Housings
  • On 3 Performance 44mm Compact V-Banded Wastegate Set w/ 6psi Springs(2pcs)
  • On 3 Performance 50mm Blow Off Valve
  • Bronze Gear Italian Manufactured Oil Scavenge Pump
  • Oil Pump Wiring Kit
  • Aluminum Laser Cut Oil Pump Mounting Kit
  • Oil Scavenging Reservoir Tank
  • Stainless Steel Braided Oil Feed Kit
  • Oil Feed Brass Adapters
  • Push-Lock Oil Drain Hose / Fitting kit
  • On 3 Performance Custom Billet Engine Oil Fill Cap (serves as turbo oil return port)
  • Stainless Steel V-Band Clamps


Hotside Includes:

  • On 3 Performance Tubular 304 ss Turbo Headers
  • 3″ 304 ss Downpipe Set
  • 3″ Stainless Lapband Exhaust Clamp Set
  • Stainless Steel Wastegate Dump Tube Set (2pcs)

Coldside Includes:

  • Polished 6061 Aluminum Cold Side Tubing Kit
  • On 3 performance 5ply Custom Silicone Coupler Kit
  • On 3 Performance 304 ss T-Bolt Clamp Kit
  • On 3 Performance Air to Air 3.5″ Bar & Plate 1200HP Intercooler
  • 3″ Polished Aluminum Cold Air Induction Pipes (Feed Air To Compressor Inlets)
  • On 3 Performance 3pc Custom Silicone Coupler For Cold Air Induction (Dr. Side)
  • On 3 Performance High Flow / Washable Air Filter Set (2pcs)


Our customer with the test subject sent this graph over with a little more boost on the stock engine and e-85.  Made good power and has a very nice power curve, pulls all the way to redline!

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Here are a few video clips showing the car running as well as the kit installed:




We have worked with Sai Li now for a year doing our tuning on the shop cars and dozens of customers and other coyote turbo cars.  Its time that we team up and further the customer service and allow for a complete full package deal to those that need it.  Now you can order with the purchase of your turbo system a complete tuning support package.  You have 2 options to go with

  •  The Start-up package is nothing more and nothing less, we get the info from you on your setup and create a startup file that will get your car up and running.  THIS IS NOT A WIDE OPEN THROTTLE SAFE TUNE.  This is a tune so you can get the car running, up to temperature and part throttle around town.  This will come with an SCT Xcal 4 handheld
  • The Full Tune with logging support is going to get you the above but also full tuning support.  In most cases, you will need the car on the dyno so you can remotely work with our tuning partner Sai Li as he reviews, data-logs, and provides you tune update/revisions.  He will work with you to review logs in the future to keep the car dialed in if needed.

16 reviews for 2015 – 2016 Mustang GT 5.0 4v Twin Turbo System

  1. 3 out of 5


    Super excited about this kit. I’ll check back often… happy engineering!!!

  2. 5 out of 5


    Hey Chad
    I have dibs on one of the 15 presale kits for my auto!

    • :

      You know your are first in line! Hope to have your pre-production parts finished up soon so we can get to test fitting and making sure it does what we designed it to do. Shouldn’t be too much longer before we are able to start making some progress

  3. 5 out of 5


    Can’t wait! Hope it’s at least 1,200whp!

    • :

      Everything that we are doing in the kit is going to have no problem supporting 1,000+ wheel

  4. 4 out of 5


    Cant wait for theses to be ready

    • :

      We should have some news over the next few weeks as we will finally begin the testing of the prototype, pre-production system

  5. 4 out of 5


    I can’t wait to see this kit all buttoned up. Will be checking back for updates. Will you be sending emails when the product hits the market?

    • :

      I will be keeping the page up to date as we make any progress. I have a blog started as well on the main page to keep updated. Just keep checking back and we will keep posting. Also follow us on instagram as we post all the newest stuff there and also coming soon items that only our followers will see before anyone else

  6. 5 out of 5


    If you need a guinea pig car I’ll let you use mine!!! Lol

    • :

      We have a customer that was nice enough to lend us his car and we have been working with him to this point. I appreciate the offer though

  7. 5 out of 5


    Anytime frame yet on when this kit will be available? And maybe more pictures?

    • :

      Im going to be posting a lot over the next week, the prototype car is being finished up right now so we are close to getting on the dyno and seeing where we are. We are extremely happy with the installed product at this point, fit and finish is nice and looks like it should when Ford rolled the car off the assembly line!

  8. 5 out of 5


    are we any closer? I’m buying a 2015 GT today and will be putting an on3 txt kit in asap. Thanks.

    • :

      We are ready to just strap the car down, just a matter of getting it to the tuner at this point. As soon as we can verify some of the numbers and make sure everything works the way it should, we are directly into production

  9. 5 out of 5


    When will this kit be available? I’ve been waiting 3 months on a update. My buddy has your single turbo kit for his 3v mustang and he loves it. I would like to try your product for myself.

    • :

      Its still on track for a Jan 2016 release

  10. 4 out of 5


    You mention that no cutting is necessary for the FMIC. Does this hold true for the entire system? Can the car be returned to 100% stock if needed?

    • :

      Any kit on the market requires the plastic piece under the engine to either be removed or trimmed. If you trim clearly that would need replaced but nothing on the install would make it where the car cannot be returned to stock

  11. 5 out of 5


    Cannot wait for this kit to come out I will be buying one. If deposit is needed just let me know!

    • :

      We will have them ready to go in the near future, I really wanted to release it next month but I think most likely we are still on track for Jan 2016. Still within a few months at most

  12. 5 out of 5


    When will there be more productions? In the Process of buying a 2015 and would love to have this kit!!

    • :

      Its going to be a continuous system that we will always produce and sell. We just run limited batches but will always try to keep it stocked. Just let us know when the time comes and we can help you out. We just bought a brand new 2016 5.0 GT as a shop car to continue working with and further our design

  13. 5 out of 5


    Will y’all be offering it with HP NGauge Sai Li tuned? I really want the Ngauge.

    • :

      Sure thats not a problem to do an Ngauge, pricing is different but I know he can do the tuning support through HP if needed

  14. 5 out of 5


    Are these now result available? What’s expected time to receive kit once ordered? Thanks!

    • :

      Yes they are in stock, we generally take around 3-5 business days to process and get an order out the door

  15. 5 out of 5


    Can you email me a quote?

    • :

      Please email or call for an exact quote. We have this kit stocked and need to know what your looking to have included with your specific setup. Thanks

  16. 4 out of 5


    I just but a 2017 gt350 can u make a kit for mine????

    • :

      Your GT350 would take this same system. If you would like us to do the full install, we can also do that for you to ensure the GT350 will not require any tweaks. Call for a quote if your interested

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