by popular request we have decided to start a section for theoretical write ups and discussions... since genya has a ton of knowledge in the area, he has been selected as the moderator and the primary contributor for this section... hopefully this section will help members decide on modification paths and help select the right part for the goals they have set for their cars
Thanks guys, hope to give good information on here, feel free to post in here about any good topics and theories from ECU's, Cooling, Suspension, Drivetrain to power(Anything). Ask away in here, we have a lot of technical people with a wide variety of know how. I will be populating the area with hopefully a lot of good info as well. When it comes to the Subaru world it is very young and there is a lot of mysteries to solve, look foward to working on them with all of you.
Wait how are we gonna give this guy his own section when he can't even put hoses on his own car correctly, j/k
genya, where were you this weekend for our mountain run? how is that "patio table" treating you? nice touch having a new thread named after you. make us proud! good to see you buddy!
Long time listener first time poster. Why is it that the lightweight competition clutch flywheel i put in my legacy makes a decel noise while other solid lightweight ones do not? Also, how does a lightweight flywheel possibly cause misfire codes as i believe is happening in my case? How does one test for a boost leak other than listening.
You seal off your intake system (usually cap at the turbo for boosted cars) and pressurize the system (usually with an air compressor). You will either hear the leaks, or can use soapy water to locate them (will cause the soapy water to bubble). Oh and this Genya guy, don't believe a word he says LOL.
The lighter flywheel will result in more drastic/rapid RPM changes as there is less mass to spin up/down. I'm guessing the ECU is tuned for the heavier factory one and treats the more rapid/jerky velocity changes as misfires. Might be worth asking Scott or Doug if that's a tunable parameter.
Subaru ECUs do not like flywheels less than ~13lbs. The flywheels lighter than that will throw misfire CELs and have problems stalling. Moose, I dont believe that it is a tuning parameter but I'm not positive.
Im still dying to get some good captures of logs and get a better understanding what parameters are there. Moose got some pro-tuner logs yet? Hi Brown the wheels are great! Paul!