spazlamhaslam Posted February 27, 2014 Author Share Posted February 27, 2014 Nice and you can flip between gas and CNG right? And the tune knows the difference right? Yes I can flip between the two. Right now I'm running on the stock tune but i have the CNG ECU (as I now have two ECUs) tuned to run off the stock map, as soon as I can afford an up pipe/ down pipe, and an APV3 I'm going to get it pro tuned and have the AP switch maps depending on the fuel I'm running. Link to comment Share on other sites More sharing options...
prodrifterx Posted February 27, 2014 Share Posted February 27, 2014 I'm confused about what 21 mpg means on CNG. Miles per GALLON of CNG? Cng is estimated as a comparison in gallons. There is a gallon equivalent when pumping cng into your tank. But cng relies heavily on psi for solid operation and that limits distance and fill amount. But when I fill school buses there is psi number and gallon equivalent shown on our fill station for the cng pumps. They aren't bad to work on. It's a very cool and interesting build. If I had the time and money I would consider it. Only downside with cng is some days out drivers fill 1-2 times in cold weather but in hot weather some can make it two days. Link to comment Share on other sites More sharing options...
Lipham Posted March 5, 2014 Share Posted March 5, 2014 I haven't looked into it, but my father explained that you can get an at-home natural gas compressor and fill up overnight. Sounds like an incredible option for city folks. Thomas Link to comment Share on other sites More sharing options...
PhaRaoN Posted March 7, 2014 Share Posted March 7, 2014 Had LPG in my LGT and removed it due to smell inside the car and driveability problems in cold weather (under 10F). LPG/CNG is good, when you drive alot, i mean 25k+ miles/year. CNG has high EGT so you cannot improve performance with it. If you want performance, get 5th class LPG system (it works without regulator: fuel tank with high pressure pump-> engine). Link to comment Share on other sites More sharing options...
spazlamhaslam Posted April 17, 2014 Author Share Posted April 17, 2014 I decided to put a protective plastidip coating on the CNG tank. I then realized if a slapped a NOS sticker on there it could be pretty hilarious. Link to comment Share on other sites More sharing options...
dahoseman Posted April 23, 2014 Share Posted April 23, 2014 Any updates on driveability, tuning, changes or modifications? Link to comment Share on other sites More sharing options...
spazlamhaslam Posted May 6, 2014 Author Share Posted May 6, 2014 Hey guys! Long time no update, sorry about that. Ive gone about 15,000 miles on CNG so I decided its time to give a good update. First off, THIS CAR IS AWESOME!!! It has been running beautifully this past 15,000 miles and also very cheaply. If I average gasoline at $3.75 a gallon at 26.1 MPG, I would have Paid $2,155 in gasoline over the past 4 months. But CNG being an average $1.65 a gallon, I have only paid $948, that is a savings of $1,207 in just 4 months(granted I do drive quite a bit). As far as drivability, it drives just like any other GT, just take away about 10 horse or so, which isn't a permanent issue, the car just isn't tuned for CNG yet. Im trying not to get bit by the mod bug so I've been taking it very slow. I just purchased a carless up pipe and will be installing that next week, then a catless downpipe will be next along with a tune by McDowell Performance. After that I should see a significant improvement in power. Ive also changed the CNG kit a little bit by replacing the reducer with a 400HP reducer for better flow, and yesterday I replaced my 200 lb tank with a 70 lb carbon fiber tank with an auto valve for safety reasons. Really I love this car on CNG, when ever I drive by a gas station and see some kid filling up his STI and looking ashamed of him self for blowing his whole paycheck on gas it just makes me smile. Whenever I go to the pump and fill up for an average of $6, i giggle like a school girl because I know I can drive this car the way it was meant to be driven but not feel like I'm going broke. Its a damn good feeling. Well Ill be at the Rallysport Direct car meet this Saturday in SLC, Come take a look and hey maybe ill even take you on a Drive in the Only LGT that is Cheaper than a Prius! (ps. Ill post some pictures after the rallysport meet.) (ps again. I started using fuelly a couple weeks ago to see how far $100 would get me, here are the results with a comparison also) Thanks! Link to comment Share on other sites More sharing options...
Max Capacity Posted May 7, 2014 Share Posted May 7, 2014 Thanks for the update, been wondering how's it working out. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
spazlamhaslam Posted May 13, 2014 Author Share Posted May 13, 2014 An update with some photos. Everything is the same under the hood beside a catless uppipe and a higher power regulator. Link to comment Share on other sites More sharing options...
loogie Posted May 13, 2014 Share Posted May 13, 2014 added you on fuelly Link to comment Share on other sites More sharing options...
dahoseman Posted August 8, 2014 Share Posted August 8, 2014 Did you ever get this car on a dyno? How does it feel compared to stock on gasoline? Link to comment Share on other sites More sharing options...
ehsnils Posted August 9, 2014 Share Posted August 9, 2014 An update with some photos. Everything is the same under the hood beside a catless uppipe and a higher power regulator. You shall have the OEM Subaru CNG badge though: http://www.bedug.com/pics/boxer_cng.JPG Link to comment Share on other sites More sharing options...
dahoseman Posted December 10, 2014 Share Posted December 10, 2014 Any updates or modifications since last post? Link to comment Share on other sites More sharing options...
benena Posted December 10, 2014 Share Posted December 10, 2014 Fuel efficient LGT... Wow. Never thought I'd write the above. Link to comment Share on other sites More sharing options...
frank_ster Posted December 13, 2014 Share Posted December 13, 2014 Had LPG in my LGT and removed it due to smell inside the car and driveability problems in cold weather (under 10F). LPG/CNG is good, when you drive alot, i mean 25k+ miles/year. CNG has high EGT so you cannot improve performance with it. If you want performance, get 5th class LPG system (it works without regulator: fuel tank with high pressure pump-> engine). This is what im doing Im using a gasoline pump and gasoline fuel injectors Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
danci1973 Posted December 16, 2014 Share Posted December 16, 2014 Fuel efficient LGT... Wow. Never thought I'd write the above. No more fuel efficient then any other LGT - just burning a (much) cheaper fuel. My 2006 Legacy 2.0R (naturally aspirated) is running on LPG for about 130000 miles now. Link to comment Share on other sites More sharing options...
alexe429 Posted December 20, 2014 Share Posted December 20, 2014 Being a plumber and a subaru enthusiast, this has got to be the coolest thing I have ever seen! Congratulations to you for thinking outside the box(ster). Subscribed Link to comment Share on other sites More sharing options...
ttnio Posted December 20, 2014 Share Posted December 20, 2014 Good bye high octane gasoline? Link to comment Share on other sites More sharing options...
frank_ster Posted December 20, 2014 Share Posted December 20, 2014 Can even run any car on wood gas Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
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