Category Archives: Tuning

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 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.

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