Author Archives: west_minist

SteffenV – Cobb 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

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

StephenC 2008 USDM Subaru Legacy LGT 2.5 5EAT Tuned for Response

Mods


Cobb AP Stg2 replaced by XRT ECU Stage 2 Tuning
XRT 5EAT Tuning
XRT XTMP

Tomei Equal length header, Tomei Up-pipe
VF52 turbo, mild porting of exhaust
Grimmspeed EBCS
Turbosmart compact recirculating BPV (not a mod really but…)
Cobb Catted DP, stock mid, STI mufflers
AVO TMIC
Stock airbox and air filter

Reviews:-

Cobb AP Pro Tune & XRT: The Differences

http://www.xtremeracingtuning.com/forum/viewtopic.php?f=115&t=770#p2391

OK we are close this one was good!

Town driving–Throttle response is still nice and strong-nothing changed there and that is good. A little jumpy in S# at ~25% throttle around 3K in 2nd and 3rd BUT** it’s very responsive to input and i don’t have the most steady foot on bumpy roads:-) doesn’t do it in S mode so yeah…my foot lol!

3rd gear pull– Only 1 single instance (single cell) of ping (-1.5) right before peak boost. a few -1.5 cells as I lifted off throttle at 6000rpm. Feels Strong.

How it feels on the 3rd gear pull–pulls harder as the boost spools up–perfect!. It feels like it hits a shot of Nitrous about 4600RPM as it transitions from 8.5degrees to 10.5degrees of timing. It’s subtle, not a surge, but I thought I’d point that out.

Roll on acceleration about 3000rpm—amazing in all gears. I don’t really feel that transition in this circumstance.

2nd gear is just nuts. I never really tried it before at WOT. SO yeah, nice one!

Shifting–under load, nice and sharp and quick. I don’t know if it’s possible to tune this—-> but it would be nice for the trans to respond faster to paddle inputs, especially at light load around town. No big deal though;-)

Alright, well where do I start? As we are getting close to the end of the tuning process I’m thoroughly impressed. Ed’s knowledge and feedback to my queries has been fantastic. He’s quick to respond and I challenge any tuner to provide such good customer support! Feedback is nearly immediate and revisions come daily (sometimes more often!).

I urge any Cobb tuned customer to consider XRT. If you have an 5EAT or if you are Cobb tuned on Canadian petrol, you need to contact XRT tomorrow!!

My Cobb stage 2 provided predictable, modest power improvements as advertised from Cobb. However, as predicted, the pinging (feedback knock, fine knock learning) was endemic, over all grades of petrol. Only after a couple revisions he had the power far above Cobb’s tune, and a transmission that provides strong, fast shifts. We are onto Rev 5, and the power keeps building and I’m getting zero pinging under all conditions, on standard Canadian 91 petrol! And the shifting and throttle response are unreal. Night and day over an Off The Shelf tune…. BRAVO Edward!!!!

 

Turbocharged Tuning – 2017 USDM Subaru Crosstrek/XV/Impreza CVT

Reviews:-

http://www.xtremeracingtuning.com/forum/viewtopic.php?f=123&t=796#p2480

By the way The AVO turbo kit and the raptor supercharger kits are not available for the 2015+, due to no tuning or fuel pump solutions
Thanks to XRT Ed, I have been given the confidence to move forward with the project. I live by multiple Subaru tuners, and was turned down by all of them. Ed said he was up to the challenge, and I like working with people that have a can do attitude

http://www.xtremeracingtuning.com/forum/viewtopic.php?f=123&t=796&start=10#p2493

Now the car is running great. I have made some decent pulls to collect data for ED. He is doing an outstanding job!!! This is the first time anyone has tuned a 15+ NA for turbo and there are a lot of hurdles to overcome. ED is knocking it out of the park. Every time he sends me a ROM it gets better and better. His CVT tune is awesome, makes it feel like a sports car not a grocery getter.

 

Modifications


XRT XV/Crosstrek/Impreza Tuning
XRT NA-Turbo Tuning
XRT CVT Tuning

Full Mod list – http://www.xtremeracingtuning.com/forum/viewtopic.php?f=123&t=796

XV-T (WRXV) Tuned by Xtreme Racing Tuning (XRT)WRXVThis morning we release our very first tune (calibration) for the…

Posted by Xtreme Racing Tuning on Tuesday, April 24, 2018

 

 

 

Bartosz Rotrex Supercharged 2004 EDM H6 3.0 5EAT Outback

Mods


  • Rotrex C38-81
  • 65mm Pulley
  • Stock MAF mounted in 76mm pipe before SC
  • 550x230x65mm Intercooler: http://fmic.pl/jednostronne/279-interco … x65mm.html
  • Cone filter
  • Supertech 8.5:1 Pistons
  • 76mm piping before SC, 63mm after (incl. IC)
  • MAP mounted in stock place in intake manifold
  • OEM Subaru Dump Valve (from Forester turbo), return pipe goes into pipe just before SC but after
  • MAF
  • Deatschwerks DW200 fuel pump
  • STI Pink injectors

PaulH – 2011 JDM Subaru Impreza WRX STI A-Line 2.5 5EAT

Reviews:-

Car feels amazing during pulls and can’t wait to get it on a nice stretch of road

The car is now feeling much better than I imagine, it moves and feels GREAT threw out the entire power-band, no more waiting till after 5000rpms to feel being pushed back in the seat. XRT is the best in customer service, turn around time and great advisor and tuner. Turn the car from slouchy to speedy

Modifications


XRT Stage 2
XRT 5EAT Tuning
XRT XTMP
Zero Sports intake
Decatted downpipe
Zero Sports exhaust
Zero Sports pulley kit
Grimspeed EBC
Turbo Heat shield and blanket
Blouch 20G XTR (8cm) (47lb/min|480CHP)
ID 1050X
DW Fuel pump
TGV Deletes

Videos

 

RooseveltC – 2012/2013 JDM Subaru STI 2.0 6MT

Rom:AZ1K000S
Tyres: 245/40-18
Car Weight: 1477kg
Driver Weight: 104kg
Total Weight: 1581kg

Mods: Stock

Posted by Xtreme Racing Tuning on Sunday, January 28, 2018

RooseveltC – 2011 JDM Subaru WRX STI tS (aka Spec C) 2.0 6MT

Rom:AZ1G800T
Tyres: 245/40-18
Car Weight: 1477kg
Driver Weight: 104kg
Total Weight: 1581kg

2011 JDM Subaru WRX STI Type S (aka Spec C) 2.0 6MTThe car felt pretty good on the road and the chassis for this…

Posted by Xtreme Racing Tuning on Sunday, January 28, 2018

 

With further tuning and running at drags, please see the times below: