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joeleodee 12-02-2011 05:45 PM

My Unassuming RBP LGT Journal/Tuning Thread
A little background. My previous vehicle was a '98 Legacy GT Limited AT that I absolutely loved, but it fell a little bit short on the power potential without big money. In the fall of 2008, It was time for an upgrade, so there were a few vehicles I considered. Since my replacement would remain my daily driver, certain criteria had to be met.

Perform well in all seasons
Comfortably transport my family
Wife approved attractive design
Rather uncommon
Available manual transmission
Good power out of the box
Good upgrade and aftermarket potential

When weighing all the criteria, a few vehicles came to mind. Those include the G35 sedan (expensive at the time with AWD), Audi S4 (same), Mazdaspeed6 (couldn't even find one to test drive), and obviously the Legacy GT. Needless to say, the Legacy GT was the best candidate especially since I liked my '98, figured an updated version of it I'll like even better.

I looked at a few different 4th gen Legacy GTs before purchasing mine in September 2008. I chose this one for all the usual reasons; best price per mileage, color, options, etc. It was bone stock when I bought it, but that didn't last long. Purchased and Accessport and flashed to a stg1 map. Shortly after that, I got a downpipe and catless uppipe and flashed to a stg2 map. As time went on, more and more parts got added and it would take me forever to chronicle the piece by piece installation so rather, several years later, here's what's been done.Yes, at the time of this posting I've been sitting on this turbo for about 2 and a half years. It was the last of Edmundu's huge part out thread so I got it. After we made the deal, he noticed that there was a crack in the turbine housing. He had a new and upgraded turbine housing shipped to me and I had that ported and coated. For the next year, I gathered parts for the upgrade. Here is my current setup.


2005 Legacy GT Limited
5 speed MT
Regal Blue Pearl
102k miles and counting


-E85 fueling
-KSTech 83mm CAI
-TurboXS Shorty massive 4" downpipe
-Grimmspeed coated EWG uppipe and dump tube
-Tial 44mm EWG
-Cobb IWG bracket (short)
-Ported and coated stock manifolds
-Grimmspeed ported crosspipe
-Perrin mid and y pipe.
-Prodrive mufflers (stock mufflers until spring)
TurboXS 50/50 BOV
-APS solid turbo inlet
-JDM TGV deletes ported
-DW 1100cc sidefeed injectors (true flow is over 1200)
-Walbro 450 fuel pump
-AVO 450 BB turbo ported and coated

Tuning Necessities

-Cobb V2 Accessport
-Access Tuner Race Cobb
-Innovate LC1 WBO2 sensor.
-Grimmspeed 3 port boost control solenoid and MBC (hybrid boost control)


Competition Clutch Stage 3 Segmented disk
LW Competition flywheel
TSK3 snout sleeve
Group N tranny mount
Group N motor mounts
Agency Power pitch stop mount
Custom fabricated tranny blast plates


-DBA slotted rotors
-Project MU NS400 brake pads

Suspension mods

Koni inserts (4 corners)
Tein H Tech lowering springs
Cobb sway bars front and rear
Moog end links
AVO reinforcement brackets
Whiteline ALK
AVO steering rack bushings

Wheels and tires

BBS RC 18x7.5" +38mm offset
Falken ZE912 A/S 235/40r18

As the car sits, all parts above have been installed and the car is running, however not fully tuned. An updated base map needs to be flashed to the ecu before we go any further. I can tell you that at only 14psi, this thing pulls hard and its street manners are actually more mild than the stock vf40. Not nearly as punchy with smooth power delivery throughout. At least that's what the butt dyno tells me. ;)

This thread will be updated as the car gets further tuned. I'll be posting logs as they come available as well as dyno graphs. This weekend, we will be working on completing a 93 octane winter tune. Springtime will add an E85 tune to the equation. This was being tuned by a tuner, but I've since taken over the workload assisted by member qikslvr. Qikslvr has helped me immensely get to this point so I'd like to thank him publicly for his efforts.

Stay tuned (bad pun)

Spec B 12-02-2011 06:40 PM

Looking forward to some results! Good luck.

sumfoo1 12-02-2011 09:13 PM


NSFW 12-04-2011 05:04 AM

That should be fun. :)

Dan_K 12-06-2011 12:32 PM


07spec_b 12-06-2011 03:26 PM

Would like to see the avo450 graph I run the 500

Balrock 12-06-2011 04:43 PM

Miss Edmundu! He was a great source of information and help on here. Nice to know a part of him lives on...LoL! In for results.

technicalgarage 12-06-2011 05:05 PM

Are you using avo's braided oil feed with the stock hardpipe off the head or a custom line?

I'm trying to adapt the infamous filter kit to my avo 380 and was wondering about oil restrictors and what others have done if anything

joeleodee 12-06-2011 06:32 PM


Originally Posted by 07spec_b (Post 3658610)
Would like to see the avo450 graph I run the 500

Would like to see graphs of yours as well. Do you daily that? The 450 is the biggest I was willing to tolerate. This vehicle is a four season all weather driver. As it sits, it's running great. I have no trouble starting the car in the sub 20 degree weather and no idling issues that everyone seems scared of with big sidefeeds. We could not do any tuning over the weekend, though. A snow storm hit and frigid temps followed. Hopefully, we can get out on the road this week and I can post some logs for you guys.


Originally Posted by technicalgarage (Post 3658713)
Are you using avo's braided oil feed with the stock hardpipe off the head or a custom line?

I'm trying to adapt the infamous filter kit to my avo 380 and was wondering about oil restrictors and what others have done if anything

Yes, braided oil feed to the hardline. I can post a pic if you want. Also, ask scooby2.5. He's running a 380 as well.

BDII 12-06-2011 06:46 PM

subscribed for graph

07spec_b 12-07-2011 10:56 PM
My numbers aren't really ideal but I'm going for broke in the spring

LosAngelesLGT 12-07-2011 11:09 PM


WhiskeyTango 12-07-2011 11:22 PM for graph I bet its slow.

SCASEYS 12-08-2011 10:50 AM

nice, I also have the Avo450
getting 15mpg on 93 w/ 850 injectors

joeleodee 12-17-2011 07:44 PM

Couple updates. The turbo won't boost past spring pressure because there's a pig sqealing under the hood. Tomorrow, I'm hoping to get out there and track it down. The tuner says it sounds alot like a coupler for the piping. Hopefully it's just that. Maf scaling was erratic so that had to be completely rescaled. Some adjustments in the advanced timing brought the surge even more under control so it's even less noticeable. Boost is all over the place but not over 15psi because of the leak. :( We are remaining completely knock free, though.

We've switched over to open source tuning since windows 7 was causing erratic readings with the v1 streettuner software. We might go back to the streettuner eventually. Hopefully I'll have some logs to post pretty soon. No point in posting anything now.

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