Draggingframe13 Posted June 4, 2018 Share Posted June 4, 2018 Ok guys, new here, first subaru and also first turbo car, 2010 LGT 6 speed 113xxx miles. Did a little tinkering around with it (invidia turbo back exhaust with catless dp, k&n intake, silicone turbo inlet tube, accessport) and than blew the motor(hole under the coolant crossover pope) Yah I know, gotta pay to play. So since I have no choice but to dive in head first, I'm wanting to build the motor and make some power. Not entirely sure what the magic number I'm trying to achieve is, but in short, I want to be able to beat most of the daily street cars. So if I had to throw a number out there, I'd probably say I want to be over 400whp. With that being said, I've searched and haven't come up with any good solid information. If I'm planning to be putting that kind of power down, what else needs/should be upgraded. Or better question, what are our axles, trans, clutch, etc rated up to. Any bits of insight and/or advice would be extremely appreciated. Thanks guys Link to comment Share on other sites More sharing options...
acumenhokie Posted June 5, 2018 Share Posted June 5, 2018 injectors, fuel pump, upgraded top mount or custom front mount, air/oil separator, head studs, sti cams, 1 step colder plugs, grimspeed EBCS, custom exhaust manifold with ewg, stick with the stock trans and just add some blast plates until it explodes (shouldn't take too long). 6 puck clutch will hold the power. Run e85 and add a 18G or 20G turbo. Link to comment Share on other sites More sharing options...
Sarang Posted June 5, 2018 Share Posted June 5, 2018 I think Caranddriver busted a stock front half axle on the stock tune on their test drive back in '09... so don't launch your car unless you want to put in an STI trans. Stock clutch can't even handle stage 2, so you're going to want to upgrade that for sure. This thread should have all the info you need: https://legacygt.com/forums/showthread.php/5th-gen-gt-power-roadblocks-and-solutions-259192.html Link to comment Share on other sites More sharing options...
s2baru Posted June 5, 2018 Share Posted June 5, 2018 Oh and you'll need about 10-15grand that's the important part and that's probably lowballing it Link to comment Share on other sites More sharing options...
foxrider28 Posted June 5, 2018 Share Posted June 5, 2018 Oh and you'll need about 10-15grand that's the important part and that's probably lowballing itThat may get him to 350 if hes got a good tuner. Throw an extra 5-8 grand if you wanna go 350+. IIRC there's maybe a select few 5th gens pushing over 350 and those cars were built earlier in time when parts were more available or vendors were willing to small batch parts for us. Link to comment Share on other sites More sharing options...
SpidermanMTL Posted June 5, 2018 Share Posted June 5, 2018 400 whp... hmm... there is a sticky with build lists... https://legacygt.com/forums/showthread.php/build-list-270099.html me thinks upgraded headers with a more common turbo flange will make your trek to 400hp a little easier. otherwise acumenhokie made you a pretty complete list, and sarang linked probably the best read for power and our cars. MY BUILD TAKE 2 : http://legacygt.com/forums/showthread.php/spideys-12lgt-take-2-266018.html Link to comment Share on other sites More sharing options...
dgoodhue Posted June 5, 2018 Share Posted June 5, 2018 For your goals I would pick a different car or be satisfied with the power the engine puts out with mods you have with an upgrade turbo, STI exhaust cams and custom tune. Link to comment Share on other sites More sharing options...
FLlegacy Posted June 5, 2018 Share Posted June 5, 2018 I think 400 lbft of torque is a better goal, and a stage 2 clutch. With the mods mentioned above: sti cams, upgraded turbo, injectors, fuel pump, and a good tune. You will be more than satisfied. Link to comment Share on other sites More sharing options...
s2baru Posted June 5, 2018 Share Posted June 5, 2018 Ya the 400+tq thing makes for some fun driving. Islandborn has gifted me his previous 20g and I'm gradually reimbursing him for it but with the build I have completed on previous stock fueling and turbo was 335/412. Considering now larger injectors, pump, and fmic are in the works on standard 91oct I anticipate ~400hp is within reach and 450+ tq. Of course e85 would do it in a heartbeat but I don't want to go through the hassle of getting it in our area Link to comment Share on other sites More sharing options...
Draggingframe13 Posted June 6, 2018 Author Share Posted June 6, 2018 Thanks for all the info so far guys. Certainly appreciate it Link to comment Share on other sites More sharing options...
nads Posted June 6, 2018 Share Posted June 6, 2018 Is it a dedicated toy or a daily driver you depend on? Link to comment Share on other sites More sharing options...
Draggingframe13 Posted June 7, 2018 Author Share Posted June 7, 2018 Is it a dedicated toy or a daily driver you depend on? At the end of the day, it wont be a daily but I don't want to be tinkering with it every time before I drive it type deal Link to comment Share on other sites More sharing options...
Deadrick20 Posted June 20, 2018 Share Posted June 20, 2018 Be prepared to get custom parts made if you want to make that much power. The stock turbo is pretty weak sauce so definitely plan on changing that. Get in touch with a tuner who knows his shit. If possible, one in person and not over the inter webs. Nothing beats having a tuner who can put his hands on your car and get the feel for it. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Deadrick20 Posted June 21, 2018 Share Posted June 21, 2018 That may get him to 350 if hes got a good tuner. Throw an extra 5-8 grand if you wanna go 350+. IIRC there's maybe a select few 5th gens pushing over 350 and those cars were built earlier in time when parts were more available or vendors were willing to small batch parts for us. Better intercooler- $800 Bigger non stock turbo- $1500 (you can go budget turbo and get a journal bearing like I did. Not as quick to spool, but once the boost is turned up you won’t even notice it’s not ball bearing and neither will the people you are leaving in your rear view.) Custom exhaust manifold- $2000 ( this is what I was just quoted by a shop that does custom welding) 1000cc injectors- $450 used Turbo back exhaust- $1500 less if you just get the Dow pipe built by the shop who does your custom exhaust manifold. Fuel pump- $250 Proper Tune- $450 (e-tunes- please don’t. If you want to get the absolute best out of your setup you need that guy who has sat in tons of modified cars to tune your car in person.) E85 would help immensely if you have it near you. No clue why everyone is pushing STI cams??? This is my third 350whp+ Subaru and never has any of my tuners recommended these. Doing installs at home will greatly lower the cost of your project. The only thing I didn’t install at home were my injectors. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
dgoodhue Posted June 21, 2018 Share Posted June 21, 2018 No clue why everyone is pushing STI cams??? This is my third 350whp+ Subaru and never has any of my tuners recommended these. The 5th Gen LGT has a smaller exhaust cam than the STI, WRX EJ25 and 4th Gen LGT. The STI exhaust cams are cheap and extend the power band to higher RPM. Most tuners probably aren't aware that the 5th Gen LGT exhaust cams are on the small side. I wouldn't pull a motor apart to do the exhaust cams, but if the motor is apart, one is doing other mods and was planning on otherwise reusing the stock cams, I think the STI exhaust cams makes sense at that point. Link to comment Share on other sites More sharing options...
Fabsx Posted June 21, 2018 Share Posted June 21, 2018 Ok guys, new here, first subaru and also first turbo car, 2010 LGT 6 speed 113xxx miles. Did a little tinkering around with it (invidia turbo back exhaust with catless dp, k&n intake, silicone turbo inlet tube, accessport) and than blew the motor(hole under the coolant crossover pope) Yah I know, gotta pay to play. So since I have no choice but to dive in head first, I'm wanting to build the motor and make some power. Not entirely sure what the magic number I'm trying to achieve is, but in short, I want to be able to beat most of the daily street cars. So if I had to throw a number out there, I'd probably say I want to be over 400whp. With that being said, I've searched and haven't come up with any good solid information. If I'm planning to be putting that kind of power down, what else needs/should be upgraded. Or better question, what are our axles, trans, clutch, etc rated up to. Any bits of insight and/or advice would be extremely appreciated. Thanks guys Pretty sure I saw this GT on craigslist! Locally too. Let me know if you have any questions and might want to meet up and look over my setup/feel it. Link to comment Share on other sites More sharing options...
Deadrick20 Posted June 21, 2018 Share Posted June 21, 2018 The 5th Gen LGT has a smaller exhaust cam than the STI, WRX EJ25 and 4th Gen LGT. The STI exhaust cams are cheap and extend the power band to higher RPM. Most tuners probably aren't aware that the 5th Gen LGT exhaust cams are on the small side. I wouldn't pull a motor apart to do the exhaust cams, but if the motor is apart, one is doing other mods and was planning on otherwise reusing the stock cams, I think the STI exhaust cams makes sense at that point. Ahh ok. That makes sense Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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