RallyMachine Posted October 6, 2014 Author Share Posted October 6, 2014 Hmmmm was this with your current wgdc map or the stock one? Link to comment Share on other sites More sharing options...
covertrussian Posted October 6, 2014 Share Posted October 6, 2014 Current one (last one I posted here). I haven't been an a stock one in a while so wouldn't know . 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
covertrussian Posted October 15, 2014 Share Posted October 15, 2014 How linear is your timing map btw? I saw this post by NSFW couple weeks ago, and decided to try adding more timing down low for mine. It seemed to have made the engine a good bit smoother. Timing testing, please note this map might not be safe, still testing! http://i160.photobucket.com/albums/t188/covertrussian/Cars/05%20LGT/ECU/Timing%20Advance/05LGTCruiseTimingV1.png~original Compared to stock http://i160.photobucket.com/albums/t188/covertrussian/Cars/05%20LGT/ECU/Timing%20Advance/05LGTBaseTiming.png~original 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
covertrussian Posted December 2, 2014 Share Posted December 2, 2014 Just found out that stock tune likes to run the fuel pump at 33% - 66% duty cycles. Which is not good for aftermarket pumps, this could be causing the stumble as you hit the 33% duty cycle... http://www.romraider.com/forum/viewtopic.php?f=34&t=6356 STi Mikey Confirmed that it fixed his stumble: http://www.romraider.com/forum/viewtopic.php?p=69216#p69216 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
RallyMachine Posted April 30, 2015 Author Share Posted April 30, 2015 Bump... Russian have you tried the fuel pump fix? Seems like my stutter is almost always at 2k rpm at low load. Link to comment Share on other sites More sharing options...
covertrussian Posted April 30, 2015 Share Posted April 30, 2015 Bump... Russian have you tried the fuel pump fix? Seems like my stutter is almost always at 2k rpm at low load. I bypassed the in tank fuel filter yeah, definitely no stumbling now (not that I could notice it before though). Here is the guide: How to: Convert Intank Fuel Filter (05+ LGT/OBX 08+ WRX/STI) to Engine Bay Filter 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
FJuan Posted May 1, 2015 Share Posted May 1, 2015 I'm wondering if this could be the cause of my 2K RPM stumble. At least a couple times a month my car would stumble which would lead to the famous "limp" mode. Been like this for the past year. Even after changing spark plugs, checking all vacuum lines and replacing worn fuel lines. Then I figured out that if I put a bottle of fuel injector cleaner in at every other fuel up, the problem doesn't happen. Could this be a fuel pump/filter issue, or the fuel injectors need replacing/serviced? My wife's balls are delicious. Link to comment Share on other sites More sharing options...
covertrussian Posted May 1, 2015 Share Posted May 1, 2015 With how old the cars are now, I would say it doesn't hurt to replace the fuel filter. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
FJuan Posted May 1, 2015 Share Posted May 1, 2015 I already know that I need to change the O-rings on the injectors, because on cold days (45 or below) I will smell fuel on start up until it's fully warmed up. May just take them out and have them rebuilt at that point, just to make sure the injectors are good. I'll look into the FP filter at that time. My wife's balls are delicious. Link to comment Share on other sites More sharing options...
covertrussian Posted May 1, 2015 Share Posted May 1, 2015 It could be your fuel hose connector o-ring causing the fuel smell too, I believe that is more common then having issues with actual injector o-rings. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
FJuan Posted May 1, 2015 Share Posted May 1, 2015 That too. I have dissconnected those a few time, and prob worn out as well. Thanks. My wife's balls are delicious. Link to comment Share on other sites More sharing options...
covertrussian Posted May 4, 2015 Share Posted May 4, 2015 My fuel pump line's oring was shot after removing it just twice. I probably reinstalled it at an angle and it scratched it off, especially if it was still wet from fuel. Same thing can happen with the fuel rail ones. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
covertrussian Posted July 27, 2015 Share Posted July 27, 2015 @RallyMachine If your still having issues you should try to replace your FPR with 04-07 STI one and change the FPR vacuum source to the BOV line. I just did this on my car and the stumble has been reduced quite a bit. http://i160.photobucket.com/albums/t188/covertrussian/Cars/05%20LGT/Engine/Fueling/FPR/STI-FPR_010.jpg~original More details in the "The famous stumble...fixed?" thread. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
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