Author Archives: XRT

NiltonS – 2013 USDM Crosstrek/XV 5MT Turbocharged (XRT-XVT02)

Modifications
XRT XV/Crosstrek/Impreza Tuning
XRT NA-Turbo Tuning
2013 crosstrek with avo turbokit
– kit came with a higher flow fuel pump
– running the 2014 wrx dark blue injectors 565cc
5spd manual transmission from a 2013 crosstrek/impreza
AVO Recirculating 50/50 valve in which it can be adjusted
2014 wrx cat back exhaust
93Octane

On Facebook:- https://www.facebook.com/XtremeRacingTuning/posts/1899622993508552

Customer’s review:- https://www.facebook.com/neo.newtron.5/posts/10218334832744315

MattS 600whp+ 2005 USDM STI 2.5 6MT

Matt came to me on his last hope in getting his long awaiting 2005 STI tuned, after his attempts to do it himself. I believe he did a fantastic job, but a professional hand was needed for his final push pass 25psi. Uncertain with his build (operating with issues and testing over a long period of time by him,) we offer inspiration that we can achieve results, even if it is short glory – because we can show it can be done and it was DONE!!! And in 3RD Gear. That was our achievement. In 4th gear, he is well over 600whp.

It was our first time working with the MerpMod Patch, which was nothing different to the Carberry Group N rom in a sense, but it was still interesting to see that setup outside of Cobb Tuning for a 32bit ECU Car.

I am looking forward to the future where we use the ETS FMIC and a few other minor changes like 272/280 cams.

MattS 600whp+ 2005 USDM STI 2.5 6MT @ 30psi

3rd Gear 30psi pullhttp://xtremeracingtuning.com/2020/05/04/matts-600whp-2005-usdm-sti-2-5-6mt/

Posted by Xtreme Racing Tuning on Monday, May 4, 2020

Additional postings:-
https://www.facebook.com/XtremeRacingTuning/posts/1865297076941144

https://www.facebook.com/XtremeRacingTuning/posts/1870378196433032
http://www.xtremeracingtuning.com/forum/viewtopic.php?f=110&t=914

Customer review – https://www.facebook.com/matt.slough.3/posts/10222887405802569

Below are the results and some pics of the car.

v3 3rd Gear boost - 30psi
v3 3rd Gear boost
v3 3rd Gear Dyno SAE @ 30psi
XRT v3 3rd Gear Dyno SAE @ 30psi

Mods
Merpmod Speed Density
Dual Walbro hardwired
E85 Fuel
GM IAT near throttle body
Tomioka FPR
Parallel Fuel Line w/Outfront fuel rails
1600cc FiveO Black ops inj
25i intake manifold
FMIC
3″ Perrin inlet
Blouch Dom5-XTR
OEM exh mani w/grimmspeed x-over
CNT 1.95″ Uppipe w/Tial 44mm ewg
3″ downpipe/exhaust
CA625+ head studs
Tomei Poncams
GSC +1mm valves
JE Pro-seal 1mm head gasket
EJ257
Nippon racing pistons .020 over
Nitrided crank
Manley H-tuff rods
Competition Clutch Stage 4 6-Puck
ACT Streetlite 14lb flywheel

I am working on a 500+whp Block Dom 5.0 2004 USDM STI that is having some problems when the boost is over 22+psi. The customer created this short video for me to hear what it is. But I cannot resist in enjoying how sweet it sounds. What do you all think?https://www.facebook.com/XtremeRacingTuning/posts/1865297076941144Mods:Merpmod Speed DensityDual Walbro hardwiredE85GM IAT near throttle bodyTomioka FPRParallel Fuel Line w/Outfront fuel rails1600cc FiveO Black ops inj25i intake manifoldFMIC3" Perrin inletBlouch Dom5-XTROEM exh mani w/grimmspeed x-overCNT 1.95" Uppipe w/Tial 44mm ewg3" downpipe/exhaustCA625+ head studsTomei PoncamsGSC +1mm valvesJE Pro-seal 1mm head gasketEJ257 Nippon racing pistons .020 overNitrided crankManley H-tuff rods Competition Clutch Stage 4 6-PuckACT Streetlite 14lb flywheel#XRT #STI #STITuning #MERP #WRXSTITuning #WRXSTI #MERPTuning #ImprezaWRXSTI #ImprezaSTI #ImprezaWRXSTITuning #ImprezaSTITuning #BlouchDominator #BlouchTurbo #EJ257Tuning #OpensourceTuning

Posted by Xtreme Racing Tuning on Tuesday, April 21, 2020

Terms and Conditions

XTREME RACING TUNING is not Responsible/Liable for any ECU, Engine, Chassis or any other damages arising out of tuning and (or) logging or any other services performed. The Subaru Owner(s) accepts All Risks.

XTREME RACING TUNING expects the vehicle to be well maintained and that all maintenance been completed for tuning for a safe,effected and efficient tuning to minimised delays in tuning. This requirement is to keep within the 1 month target date.

Tuning much be completed within 30days of the Invoice date, unless agreed upon between Xtreme Racing Tuning and the Customer on special projects or situations.

Tuning usually takes 5 to 10 workings or a maximum of 15 work days from the Invoice date. Thereafter, support to the end of 1 month of the Invoice date for minor fine tuning updates.

They will be NO refund once tuning has started.

If for some reason a refund is requested within 30days of the invoice date and they have been no tuning, Xtreme Racing Tuning will refund you 75% of the Invoice value. Otherwise, they will be no refund after 30days of the Invoice date.

Subaru Ascent Tuning

XRT is the only Tuning company beside Cobb Tuning to demonstrate it tuning capabilities and the release of tuning information to the World before any other tuning companies. In fact, tuning companies requires Cobb Tuning to support these models. XRT don’t! Thats being innovative and creative!

Please also note XRT is a Cobb Protuner and we support tuning of the Subaru Ascent using the Cobb Accessport.

In respect to our research and development (as shown at the very below) on the Subaru Ascent & the FA24DIT operating in this vehicle, we are offering Stage 0 and 1 tuning support to owners with the following requirements:

  • Tuning that does not require a device to be installed in the car
  • Improve driveability with clear objectivity in engine response
  • Improve Fuel Mileage
  • Reduce throttle lag
  • Better sounding throaty engine
  • A little more pep (Stage 1)
  • Improve CVT Operations

The tuning is really considered for those not liking the small little issues as highlighted in our XRT Subaru Ascent Whatsapp group – https://chat.whatsapp.com/E1dPtXGgn3oEJAEm6P3aeU

http://xtremeracingtuning.com/2019/10/26/xrt-subaru-fa24dit-tuning/
http://xtremeracingtuning.com/2019/10/26/subaru-fa24dit-turbo-mgt22/

Videos
ttps://youtu.be/EoXe2WxpI-Q
https://youtu.be/zJ_G6SRK93M
https://youtu.be/oh5fojSEWUA
https://youtu.be/HhU6eCFyqMY

Research
https://www.ascentforums.com/threads/xrt-subaru-ascent-tuning-stage-1.8915/#post-120707
https://www.ascentforums.com/threads/xrt-subaru-ascent-tuning-stage-1.8915/post-120957

Customer Reviews
https://www.ascentforums.com/threads/xrt-subaru-ascent-tuning-stage-1.8915/#post-120957
https://www.facebook.com/XtremeRacingTuning/posts/1715937071877146

Stage 1 Development Tuned

Stock
Stock Drag Data

Subaru FA24DIT Turbo: MGT22

The Subaru Ascent FA24DIT MGT22 Turbo in operation is equivalent to the Garrett GT2860R – based on logging data. Therefore, its turbo compressor graph possibly looks 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).


Based on the Subaru engine logging data and engine flow analysis, 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, the MGT22 could flow up to 32+lbmin 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 18psi of boost at 5600rpm. That will net 320chp or around 270+whp. 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

Update Dec 21, 2019


Update Dec 24, 2019

Mapping XRT Stage 1 Tuning over the equivalent turbo compressor map – GT2860R (A/R 60)

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.

RonS – 2011 ADM Subaru Forester S-edition 5EAT

Info
Owner: RonS
Rom ID: AZ1J500V
Tyres: 225/55-17
Car Weight: 1540kg
Driver Weight: 105kg
Total Weight: 1645kg

Mods
XRT XTMP
XRT Stage 2

IHI VF52
Process West Verticooler
X-force turbo back exhaust (awaiting install)
Adjustable GFB deceptor Pro II BOV
Process West Cold Air Intake w/K&N Filter (WRX/STi 2008-14) (PWCAI04)
Grimmspeed EBCS

http://www.xtremeracingtuning.com/forum/viewtopic.php?f=140&t=810
https://www.facebook.com/XtremeRacingTuning/posts/1302594823211375

SteffenV – Cobb Remote Tuning 2007 USDM Subaru 2.5 OBXT 5MT

Info
Owner: SteffenV
Version: Cobb v2
Tyres: 255/40/18
Car Weight: 1588kg
Driver Weight: 190kg
Total Weight: 1778kg

Altitude: 1539m

Im not really sure where to begin as everything about Ed and my tuning experience with XRT has been nothing short of…

Posted by Steffen Veum on Sunday, August 26, 2018

Mods
Cobb V3 Accessport
XRT Stage 3 Full Speed Density Cobb Tuning

Custom NVS rotated turbo kit.
3in Custom NVS down pipe and cat back to Stromung Y pipe and Quad tip mufflers
Garrett GTX3076R Gen I W/ Tial .63AR Hot side, 4in Anti Surge inlet
4in custom NVS intake with K&N air filter
Custom NVS up pipe
Perrin 3.5in front mount intercooler
PTP Turbo blanket and titanium heat wrapped up and down pipes
Stock exhaust manifold
44mm Tial external waste gate plummed back to exhaust.

EJ257 case halves
Cosworth Stock bore pistons 9.5:1
Manley rods
King rod and main bearings
Killer Bee oil pickup tube and oil baffle
11mm high flow STI oil pump

Stock 2007 OBXT cylinder heads and camshafts
Supertech Sodium Filled Inconel exhaust valves (stock size)
Supertech stainless intake valves (stock size)
Supertech Titanium dual valve springs, seats, and retainers.
Cometic .040mm thickness head gaskets
ARP 625+ headstuds

STI rotated intake manifold
Grimmspeed 3 port EBCS
Stock Map sensor
JDM TGV deletes
Tial vent to atmosphere BOV
IAG Competition AOS

DW300 Fuel pump Hardwired to battery
Stock topfeed fuel rails and FPR
ID1300X fuel injectors
Parallel routed fuel lines
Full E85

Koyo Radiator and cap
Perrin overflow tank
Optima Red top battery
SPT oil cap and battery tie down

AEM UEGO AFR gauge mounted in AVO dash pod

2006 USDM Spec B full interior swap
2010 LGT rear view mirror

LGT suspension with rear upper and lower control arms
All subframe and rear cradle spacers removed.

2004 Subaru STI Brembo front brake calipers
DBA 4000 T slotted STI front brake rotors.
Stainless steel front and rear brake lines

18X8.5 +44 SSR GTX01 wheels
SSR Aluminum lug nuts
255/40/18 Bridgestone Potenza RE760 tires

 

v12 3rd Gear Dyno SAE @ 26psi.png