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Old 08-15-2005, 09:53 PM   #1
jasonetc
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Default 05 legacy gt questions

Just bought a new legacy gt, new to subarus and had a couple of questions. First of all how strong is this 2.5L set up, I know the heads and turbo are different from the sti. Also what parts are interchangable between the gt and sti. brembos, turbo??

What mods are best made first, I was thinking of a u pipe and downpipe to start and K&N filter.

Thanks
Jason
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Old 08-15-2005, 09:54 PM   #2
fibuz
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search/legacygt.com
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Old 08-15-2005, 10:23 PM   #3
fibuz
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fyi, heres a good quote about u/d-pipe compatability:

Quote:
WRX and STI up-pipes will fit. Some wrx and sti downpipes will fit. However, making it fit will require either: adapter from Rally performance, custom adapter made in an exhaust shop and a BFH. There are different bends between the wrx and legacy so some downpipes will hit the firewall or transfer case, this requres modification of either the pipe or firewall (use BFH). To make things worse, some downpipes that fit the 5MT transmission will not fit the 5EAT transmission legacy (perrin).
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Old 08-15-2005, 10:37 PM   #4
tora
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The front brembo's are bolt on, the rears are not. The fronts will NOT fit with the stock wheels. There are a lot of mix and match parts from the STi to the Legacy in regards to the engine. For downpipe just buy a downpipe made for the Legacy and don't hassle with ill fitting ones. We make a DP for the Legacy. There are heaps of parts available specifically for the Legacy, just think abou twhat you want to get out of it and then ask the right people and you will find a plethora of parts. (Feel free to PM me for more info).

As to mods to do first you will get impressive gains with U/P, D/P AND engine management. Engine management will make a huge difference on these cars. Also think about a change in turbo, intercooler, fuel pump and injectors if you want more power than that.

For myself I would do the up and down pipes, lose the stock crappy rubber and heavy wheels, get rid of the weak brake pads and get some better pads and stainless lines, and get some decent coilovers (DMS). I would be set at that point and thoroughly enjoy the car.
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Old 08-16-2005, 01:18 AM   #5
PDXTuning
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Hey Jason,

Congrats on the purchase, you bought a sweet car. As far as engine strength goes, the motor is fairly stout, the stock rods are very strong and can handle 400+whp. the pistons also can handle that amount, but you must avoid detonation, they are a very strong cast design, but their hypereutectic phase casting, gives them a brittle attribute compared to a forged piston. Unless you went really crazy, you would not be approaching the engine limits at all as long as you are well tuned.

as tora has already said, the key is engine management, which means you must be tuned for the modifications you buy to really see gains from them, here are some example's of our results with the legacy GT http://www.pdxtuning.com/legacy_dyno.htm we have these power packages available on our online store as well. If you have any questions about them, feel free to let us know we would be happy to help.

also to answer your question, the turbo is not interchangeable with a STi, as well as the intercooler, they are both specific to the legacy and Sti individually.

thanks!

Ben
PDXTuning
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Old 08-17-2005, 01:00 AM   #6
jasonetc
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Thank you very much guys, this gives me some good ideas. I am a previous owner of two modded 3rd gen rx-7s, so I know a little about turbos and tuning, but like I said I am new to subaru and flat fours. I will be in touch for any help/advice/parts.

thanks again
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Old 08-17-2005, 02:52 AM   #7
dknc
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Default legacy suspension

Jason,

Are those Bilstein suspension you have on your Legacy GT? I see that they have it for JDM legacy, but in the USDM website, they didn't mention about Bilstein suspension. So I wonder if your GT has them. They are yellow in color.

ack... why is the JDM version always get more goodies? Sorry, I found the answer in the B4 version coming in October.

Last edited by dknc; 08-17-2005 at 03:00 AM. Reason: found answer on another rumor forum... darn it
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Old 08-17-2005, 10:33 AM   #8
brooklyngenius
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yeah you NEED to do suspension first trust me. the stock suspension is just way too soft.
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Old 08-17-2005, 02:37 PM   #9
Jduke
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Yup^ got to beef up the suspension first... I just got front and rear whiteline adjustable sways, And WOW did it make a dramatic difference in body roll and flatness through corners. I also have front a rear strut tower bars (these don't make much difference but a piece of mind for me) I am currently looking at the JDM GT bilstein (yellow, but not spec b) suspension set, although with the sways I dont see it being as necessary as I thought.

Only other mods Cobb Ap stage 1 (DP/UP on wish list, then to stage 2)
Rims/tires ( this was the first thing I did and makes a hug difference over the stock re92's)

Enjoy the LGT!

John D.
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Old 08-17-2005, 03:12 PM   #10
AKLGT
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glad to hear the sways did that much for the suspension. how difficult is it to do them yourself?
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Old 08-18-2005, 10:36 AM   #11
Jduke
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Wasn't bad, on a scale of 10 its a 3-4. Took me about 3 hours to do both front and rear (now that I have done it, it would only take me about half the time). I found the rear a bit easier than the front, but both went smoothly and I had no problems, there are a couple good write-up's on legacygt.com

Oh and I adjusted the front to the stiffer setting last night... hehe these sways are a must do mod for the 05 LGT's. With them both on the stiff setting it seems the rear could be just a bit more stiff, but very neutral with no scary turn in problems at all.

John D.
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