Category Archives: Tuning

Subaru FA24DIT Turbo: MGT22

The Subaru FA24DIT MGT22 Turbo is equivalent to the Garrett GT2259 Turbo and compressor graph possibly looking like the one shown below:

The FA24DIT in the Subaru Ascent run a Volumetric Efficiency (VE) of around 95% from 4400-5600rpm, dipping to less than 90% @ 6000rpm. Due to the turbo size and other engine factors, it is very efficient from 2000rpm to 4000rpm. The PR at 5600rpm from logs is 1.8 (11.5psi).

The Garrett representation could be off a little for the compressor being used and it is very possible the shape of the graph will be different and extend a little more to the right. Based on Subaru data and engine flow data, I see around 30lb/min. Given that Subaru’s tend to run rich, I would expect the flow to be around 27lb/min. That being said, I would expect the MGT22 could flow up to 32lbmin at high compressor speeds with a lower efficiency of 65% or less. That is more hot air. To achieve a flow of 32lb/min, the turbo will need to push 16psi of boost at 5600rpm. That will net 320chp or around 270whp. A good avg of 250whp could be expected on the stock exhaust system. For those searching for more torque, this can be easily had since the turbo is small, but the turbine will be spinning a little faster. That implies a little more heat and a nice water spray would help keep the Intercooler cool.

If XRT had to tune, we would run 18-20psi in the sweet spot and taper down to an efficient boost of 15-16psi at 5600rpm and obviously lower to rev limit.

A good stock upgrade for the Subaru ascent and possibly for the Outback and the Legacy when it comes out with the FA24DIT is the Garrett GTX2860R. It will operate well within the shift points of the CVT transmission.

Reference data taken from – http://xtremeracingtuning.com/2019/10/26/xrt-subaru-fa24dit-tuning/

Please see a similar car we worked on that have a similar setup and Subaru mythology – http://www.xtremeracingtuning.com/forum/viewtopic.php?f=114&t=468

XRT Subaru FA24DIT Tuning

XRT started R&D Tuning on the 2020 Subaru Ascent on October 22nd, 2019 with a number of Subaru Ascent owners as part of an online group to keep communications and developments consistent and communicative. In addition, a FB group was created to represent our desires to highlight from a tuning perspective (like what we always do on our forum) the capabilities of the engine and general tuning issues. https://www.facebook.com/groups/subarufa24tuning/

To show our willingness and collaboration in the development of tunes for such models/engine, I reached out to Cobb Tuning as a Cobb Protuner to Alpha/Beta test any new products, as we have already started.

Please see below our minor tuning results for a current vehicle we are working on, before we encourage other to spend money to attain the necessary tools in tuning. As you will see below with the current engine configuration of Cams, heads etc, this engine will be nice for boosted models to raise the level of performance, once twin-scroll turbos are developed, due to the small engine size. It seems way more efficient than the EJ257 and somewhat on par with the EJ207. From discussions online, it really does seem like a over bored FA20.

I do not see the FA24F used in the STI, but a variant of it like all highlight turbocharged models for the STI. But we will see over time. I myself would love one to go into my GC8 utilising the Syvecs S7Plus.

Update: November 11, 2019
The boost of the Subaru Ascent cannot be adjust. The system is of mechanical type with a electronic feature to switch the boost off or on for Limp mode purpose. This is why the boost curve appear as it is below, which does not represent the wastegate duty cycle operations to bring the boost under control when reviewed.

MarekK – 2004 EDM Forester 2.5XT 5MT

Info
Owner: MarekK
Rom ID: A2WC420F
Tyres: 225/55r17
Car Weight: 1500kg
Driver Weight: 82kg
Total Weight: 1582kg

Marek Kwas It been an interesting year where we have seen a good few Foresters in a modded state coming to us. Here is a…

Posted by Xtreme Racing Tuning on Thursday, July 26, 2018

Mods
XRT XTMP
XRT Stage 2

– decat uppipe
– 3″ downpipe with sports cat
– 3″ straight through exhaust with Fujitsubo RM01A muffler
– Pre97 GC8 WRX/STI TD05H-16g turbo with stock wastegate
– 550CC stock injectors, yellow, side feed
– Deatschwerks DW200 fuel pump
– STI Intercooler with Forge BOV
– Cobb 3-port boost controller

What has been checked:
– valve clearance
– compression
– new plugs (NGK ILFR6B, 0.8mm gap)
– new oil
– intake leak test

Other interesting stuff 😉
– STI hood scoop with STI air splitter
– Cusco Zero 2 suspension with pillowball mouns and camber plates
– STI calipers both front and rear, DBA T2 brake discs with CL5+ pads front, DBA Street Series with DS2500 pads rear
– Rear STI sway bar
– Titanium STI front strut bar
– Rays Gram Lights 57S 17′ wheels

Tuning Tools for ECU Re-Flashing

LAPTOP


Windows 7 or greater with more than 4Gb of Memory and a fast processor  – Dual Core or more.

 

CABLE


Tactrix OpenPort 2.0 – http://www.tactrix.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=flypage.tpl&product_id=17&Itemid=53

Reflashing Connectors are needed for models between 2001-2007 for 16bit ECU’s. That’s

 

LOGGING SOFTWARE


RomRaider – http://www.romraider.com/RomRaider/Download
Logging Definition for RomRaider – http://www.romraider.com/forum/viewtopic.php?t=1642&start=1

 

REFLASHING SOFTWARE


ECUFLASH – http://www.tactrix.com/index.php?option=com_content&view=category&layout=blog&id=36&Itemid=58

 

WIDEBAND GAUGE


Innovate Wideband Air/Fuel Ratio Gauge– Works with Romraider
MTX-L PLUS: Digital Wideband Air/Fuel Ratio Gauge Kit
DLG-1: Dual Lambda (Air/Fuel Ratio) Gauge
DB gauges

 

EXHAUST GAS TEMPERATURE GAUGE


MTX-D: Exhaust Gas Temperature (EGT)

 

COMPUTER REMOTE SUPPORT


For the instant customer support: TeamViewer QuickSupport

 

Remote Tuning

Over the many years of Remote Tuning (12yrs now as of 2006), the following information highlighted below is what customers try to attain before or during tuning and if these little ta-bits can be had, persons seeking a tune can be 100% ready and comfortable in tuning.

Before I start, allow me to briefly introduce myself in point form

Years of experience: 12yrs (as of 2006)
Specialisation: Subaru
Background: B.Sc in Mathematics, Physics, Electronics | IT, Telecoms, Cybersecurity, Past Part-Time Tuning Instructor at a Technical College, Driver – lite sports, Cooking, hiking, family man, etc
Tuning capabilities: OEM ECU, SYVECS, HYDRA, LINK, Vi-PEC, Other EMS, Suspension

Remember Education is Power, once done right 🙂

Remote Tuning vs Physical Tuning


In starting, there is no difference between Remote Tuning and Physical Tuning. Remote Tuning takes a little longer and can capture events more easily and time is the factor to allow true fine tuning. Taking a car on a dyno and you have a prefect tune is not possible. Taking a car on the road for a few mins and have a prefect tune is not possible. If this was the case, OEM manufactures and racing teams will have limited research and testing. In others words, those countless hours you hear would just be lies.

Remote tuning requirements expected by the experience and knowledgeable tuner details that the customer communicates with his tuner in real-time as much as possible and communications channels opened extensively for tuning determination. That is, through you the customer, that knowledge transfer is achieve on any matter.

There are some who due to magazines and because of the bad information from many “Tuning” business seeking a quick way to make money, misrepresent real and detailed tuners who cares about Customer Relations, Service, Stability, Performance, Response, etc. This is a specialised service and should be treated so. That being said, there is no tune for $99, $199 or even one-of tunes. What took your OEM manufacture or racing team years to get right, just cannot come in the form as a pill. Please be wary. Because of the pricing war, tuning prices have been drivened down and the quality of tunes have gotten worst. I am sad to say, the customer now expect less and poor quality tunes are fantastic. This indeed is very saddening. In addition every man is a tuner because of having software in his hands to tune.

Dyno’es – Not created equally
Dyno’es are good. But it is a tool and you should understand this. Not all dynoes are created equal and not all are operated properly. The best Dyno to used is here – http://www.rototest.com/index.php?DN=1&Visitor=4
RRI Research Institute

Dyno Testing Informationhttp://www.rri.se/index.php?DN=29

Noting the above, this will help you determine what is used out in the field. This is extremely important!!!!!!!

The dyno must create a real life environment as much as possible and the quality of the hardware and software is key. That being said, a car dyno tuned should really spend some time on the road to gather data for stability, function and operations. This can take a few days or as long as possible for varying environmental conditions. Remember OEM manufacturers and racing teams. Please make sure your tuner offers this. Don’t be carried away with numbers.

Dyno usage – What it is good for

  • Dialing in areas that needs cruising time
  • Dialing mods that changes the dynamics quickly or drastically
  • Safe area to tune.
  • Ability to see changes easily on a close to control environment. The dyno facility should be controlled as much as possible. This can minimised the number of dyno pulls. Example, Humidity, Temperature, pollution, Noise, etc

Remember and don’t take it as my word – Research, research, research. The tuning should finish up on the road, covering varying environmental conditions. Example, morning to night; hot to cold.

For those who love Dyno figures, having a correction of over 1 is useless. To verify Dyno figure, perform a quarter mile run and determine you realistic power figures.
Xtreme Racing Tuning – Drag Racing: 1/8-MILE TO 1/4-MILE CONVERSION TABLE


So let us get started.

Note: I am going to be precise as much as possible!

What are we talking about based on the subject?
Tuning the stock OEM computer that comes in the car. The majority stated below are also key points for Engine Management Systems or Powertrain Solutions.

Mechanical needs

  1. Try to understand what tuning is. Tuning allows the car to compensate for the environment for which it operates in. Either for general purposes or having high performance needs.
  2. What is needs before tuning – Mechanically
    1. Full Engine Oil service
    2. Spark Plug change
    3. Check for air leaks in the intake and header system – A boost test should be done.
    4. Clean the MAF sensor
    5. Throttle body Clean
    6. Injector Cleaning. Professionally cleaned or using a good quality Injector cleaner
    7. Verification of all necessary sensors and solenoids through logging – Xtreme Racing Tuning – XRT Diagnostic/Troubleshooting Support Service
    8. General maintenance of the car – Brakes, Coolant, Transmission oil, Gear oil, Tyres, Alignment, etc, etc
  3. Tactrix Openport 2.0 Cable
  4. Ecuflash software
  5. Romraider Software – Romraider.exe | Latest RomRaider LOGGER Definitions

 

Tuner needs


Now after all of the prelim ground work been done, the next task is finding a tuner. Remote tuning should not offer anything less. Actually it should offer more!
The tuner should be:-

  1. Very well Experience
  2. Should have excellent Customer Service – The community should highlight this.
  3. His work broadcast and can be seeing online
  4. Excellent Customer Reviews
  5. Very knowledgeable about his job and the car to be worked upon
  6. Excellent knowledge in Diagnostic and noting issues before issues gets out of hand
  7. Excellent Support Services – Phone, email, messaging
  8. Excellent communication skills
  9. Quick to respond within 4hrs
  10. Understanding of family committment and factors that affects the tune
  11. Excellent abilities in setting up computers and instructing/lecturing
  12. Be quick and excel in highlight your tune to you with graphs and data, if needed.
  13. Etc etc etc

 

Testing/Logging


Testing should be done as follows:-

  1. Follow your tuners direction precisely. Don’t do more than what is needed. If otherwise, seek advise.
  2. Relate any issues to the Tuner, even if you do no think it is important
  3. Safe area
  4. Cruising to spirited driving in areas to create minimal to high load stress on the car. These are mentioned below.
  5. Hills
  6. Varying environment conditions
  7. Flat roads, especially for dyno pulls. When performing dyno pulls, do not sit waiting for the car to heat soak. This will reduce power tremendously.

Please note the above should just wet your interest and should drive dialogue between you and the company/Tuner of interest.

What makes XRT different to other Tuning Companies/Tuners?

What makes Xtreme Racing Tuning (XRT) different in respect to other Tuning Companies/Tuners?

From time to time, I do get questions referencing XRT. So let me take some time to answer them.

XRT does not adhere to today’s trend in tuning that is growing worldwide where attaining the customer money is key and providing great service takes second place. We believe the service we provided is important and is second to none.

Q: What makes XRT different to others?
A: XRT core interest, passion and precision is what makes that difference. To achieve a thumbs up from its customers or a thank you is its aim. XRT prides itself in not giving up in the most difficult situations or say it cannot be done. We let our work speaks for itself. We just love to take what is given to us and optimise it. Our main focus is giving that SUPERB Experience to the customer, leaving a permanent smile on their face.

Q: Why does XRT costs a little more when compare to other ETunes?
A: XRT does not distinguish the difference between Etuning & local tuning as others do. We believe in given the customers the best quality of service, time and support. This is attest by our valued customers. XRT believes in full customised tuning, even to be there online through the process by the use of remote software like Teamviewer for Live Tuning. We do not offer off the shelf maps with minor tweets or one rom for all cars with the same ECU ID. We also believe in fine tuning to suit your car configuration and your needs. We brought this process over from working with EMS and with customers who race their daily driven cars. Please see our tuning strategy below that makes this all happen….ingrained in out DNA.

Q: What is XRT support service(s) and why is it different to others?
A: We give close to 24hrs of support through Teamviewer, Email, Whatsapp, BBM and BBM Group. Support is fast and reliable. Customers are welcome to even call. In all reviews, XRT is praised for this. It is above standard when compare to the tuning/tuner industries. We provide and request constant feedback from the customer and revisions of roms to reach optimum performance.  

Q: What makes your Transmission tuning different to others?
A: XRT takes the time to develop Transmission tuning based on feedback and countless customer reviews to make that difference. In addition, due to feedback, support is given to make changes to suit the car and the customer.

Q: What other services do XRT offer?
A: XRT collaborates with its customers for troubleshooting and diagnostics through data logging and reviews. XRT also offer support for upgrades, even Project Management Services.

Q: If my ECU is not defined or a definition is not available, can you support it?
A: Yes. we create our own definitions for full support, even able to offer better support as a tuner compare to other tuners using Cobbs, Ecutek, etc. We offer a more reliable and safe tune. This is attest by some of our customers who have replaced their Cobbs or existing tuners who used Ecutek to tune their projects and not getting the correct, safe and reliable results.

Q: Do you tune turbo cars?
A: Yes, we do. XRT was born out of WRX/STI tuning. Actually more STI tunes that any other model pre XRT founding. We have work on projects up to 600HP and consulted up to 1000HP.

Cobb AP Pro Tune & XRT

I have been watching Rallying, Grand Touring, Touring and many other sports where named manufactures (BMW, Nissan, Porsche, Subaru, just to name a few) never reprogrammed their ECU’s to run those cars for such Motorsports, even when the power is close to stock and I always ask myself what were the reasons why this was done. As I matured in ecuflashing, Instructing in EMS courses and tuning EMS over the years, I came to understand why this is so, even if such technology was tempting, accessible and cost effective.

The Stock/OEM ECU/ECM:

  1. By design is just enough to support all functions of the stock car
  2. Cannot log at a high rate. This is needed to capture events for remediation
  3. Not powerful enough and high storage areas for Advance Engine Strategies and Operations (Antilag, Fuel, Ignition – all inter-related to multiple level mapping, Complex features and operations). Such enhancements comes in the form of FPGA’s implementations, dedicated CPU Processors per functions and the type of Processors used. For additional reading, please visit the following link –
    1. https://en.wikipedia.org/wiki/Field-programmable_gate_array
    2. https://www.design-reuse.com/news/6629/actel-fpgas-development-multiple-race-car-engine-control-units.html
    3. https://www.xilinx.com/video/hardware/what-is-the-difference-between-an-fpga-and-an-asic.html
  4. Do not have enough Inputs/Outputs (I/O’s) for additional functions for a sports car
  5. Ability to program in the field with new strategies for performance operations and access to new features. That is, changing the core functions of the device itself. Kind of like model versions upgrades all happening with just one devices without internal hardware architecture changes.

For a quick read, please review XRT owned link – EMS/Powertrain review thoughts

If all of the above continues to hold true going into the future (and I do not expect it to change due to production cost of vehicles), why then would I want to reflash the Stock/OEM ECU/ECM and as a tuner, not have the best in tuning for a very efficient and responsive engine?!?

That being said, we focus more on EMS tuning for specific operations and functions for an engine needing that edge in performance and development. 

The necessary skills, strategies, experience and mental aptitude is so extensive & intensive in this type of tuning and support, that one can achieve the highest goals needed for sports and performance tuning, in relation to the configurations of the car, driver needs and environments.

With such focuses highlighted and discussed above, XRT by its nature and having such backgrounds in these fields (tuning and support), can seriously, precisely and accurately provide reflashing services that is Top Class to none, taking every bit of time to provide the finest tunes in tuning your car, regardless if in Motorsports or every day street driving; especially when it comes to reflashing using Open-Source technology or Cobb Accessport for tuning.

Bringing along those core aptitudes, customers can gain a new experience in tuning support and better operations of their cars. That is, achieving great review in whatever we do when working with the clients. One could accurately say we are customer oriented 🙂

So what do we do?

  1. Provides the greatest level of known support to clients in the tuning industry- http://xtremeracingtuning.com/forum/viewtopic.php?f=122&t=670
  2. Does not distinguish the difference between Local & Remote tuning
  3. Seek the best possible reviews as much as possible for the finest work in tuning of client cars – http://xtremeracingtuning.com/forum/viewforum.php?f=48
  4. Provide accurate detailed Diagnostic support throughout the tuning process or XRT Live Group supports
  5. Very log oriented. That is, clients must log for fine tuning; as much as possible. Logging defines the tune!
  6. Custom Tune all cars starting from Base-Line tunes to fine tuning. We do not make OTS (Off The Shelf) tunes the final tune.
  7. Work with the client closely in the optimisation of the tune while fine tuning.
  8. Encourage and insist greater levels of communication between XRT and clients. This provides the best possible experience in tuning and support.

So…. out of what we do, we just do it better by taking our time, which is reflected in our tunes and support that makes us different to other Tuners and tuning support companies. Logging and communication with our customers defines the outcomes.