travgag Posted November 21, 2012 Share Posted November 21, 2012 Hey guys, so my 2.2 swap has been good to me, no major problems, i have over 8, 000 k on the swap now, now our subaru's gas milage isnt amazing, but mine seams to suck bad, im getting like 18-19 mpg (12.7-.9 l/100k) ever since it got bellow 5 Celsius, And the car this summer was only about 24 mpg highway, i remember when this 2.2 was in the other car i was getting 26-27 highway and maybe 22-24 on a regular week, i don"t drive like a maniac, accelerate gently, it doesn't seam so make much of a difference, Now i didnt change the ecu in the car, i read it shouldn't matter, and i dont even know were the ecu is located, Also the car doesn't have alot of power, a small hill/slant going about 50 k/hr, I can put the pedal all the way to the floor, and it does accelerate to fast lemme tell ya and the temperature it runs at is bellow half, the motor in the old car always ran at half, I didnt changed the thermostat, the original motor in this car also ran bellow half, so I put a cardboard to maybe bring up the temperature to maybe get better mileage but it still runs the same temp, even though the rad is 50% covered, the gauge in the cluster is okay because the old motor overheated and i saw the gauge rise lol thanks Link to comment Share on other sites More sharing options...
travgag Posted November 27, 2012 Author Share Posted November 27, 2012 this is where my gauge rides at, im going to try swapping out my maf and first o2 sensor since i have spares, i think the car might be running rich, which will also make it run cooler http://briancloss.com/subarugauge.jpg Link to comment Share on other sites More sharing options...
Stang70Fastback Posted November 27, 2012 Share Posted November 27, 2012 That's definitely a bit on the low side. Mine doesn't quite sit AT half, but it's at least halfway further to half than yours. Do you have any way of reading the temp through the OBD port? As I recall it should be somewhere around 190-195 degrees or something like that. Link to comment Share on other sites More sharing options...
travgag Posted November 27, 2012 Author Share Posted November 27, 2012 i dont have a real time reader, but i do at work, il give it a try and see what its comming through at the odb port, good idea Link to comment Share on other sites More sharing options...
subikid90 Posted November 28, 2012 Share Posted November 28, 2012 What stang said. The sensor for your gauge and the sensor the computer uses are two separate sensor and the temp gauge one could be reading slightly off. -Subikid90 1997 Legacy GT 5spd & EJ251 w/EJ25D heads ~10.5CR 1998 Legacy GT Limited waiting for EJ22T hybrid swap Link to comment Share on other sites More sharing options...
travgag Posted December 4, 2012 Author Share Posted December 4, 2012 soo, i swaped out the front o2 sensor and i seam to be getting much better mileage, im at half a tank and im at 195 kilomters, were i would ussualy be at like 120-150, I think when i blew the old 2.5 and all that oil went through the exhaust that sensor got a bit of an oil coating haha well see what my mpg is in a few days Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted December 4, 2012 I Donated Share Posted December 4, 2012 hmmm interesting... -broknindarkagain My Current Project - Click Here COME AND TAKE IT "The only thing necessary for the triumph of evil is for good men to do nothing." Link to comment Share on other sites More sharing options...
travgag Posted December 6, 2012 Author Share Posted December 6, 2012 well.... the results are in, im now getting 22 mpg instead of like 17-18, not bad for our subi's Link to comment Share on other sites More sharing options...
monkeyposeur Posted December 7, 2012 Share Posted December 7, 2012 Hmm, I have a newish O2 sensor laying around. I should swap it in and see it I get better mpgs. I'm about where you are though. Link to comment Share on other sites More sharing options...
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