Hi,

I have worked and learnt about Subarus for a couple of years now, so I went a bought my first proper turbo car. It is a 1997 Liberty converted with a V3 STI engine. The AFR is running extremely rich under WOT (around 9.5:1). I know an ECU and tune is the best way to fix it, but I need to save up a while until that can happen. I was wondering an easier and safe way to fix this. I am not looking at making more power, just for it to run more efficient.

Mods from previous owner: td05-20g turbo, FMIC, electronic boost controller, wideband O2, TBE, yellow injectors (not sure the cc exactly). It is on the V3 STI ecu at the moment.

Thanks for the help!

As a start, check all of your silicone couplers for boost leaks. Make sure that there is no air leaking from the system. This includes turbo outlet, throttle body and all the joints on your FMIC.

Wow, yep made up some plugs and pressured it up to 20psi. There were leaks coming out left right and center. I closed them all up so hopefully it gets better. How long does it take for the ECU to adjust itself? Also how do I check for leaks in the vacuum lines to/from the boost controller etc.

Thanks again

Good form. You can either unplug the battery for 15 mins I think. You will have to check. I don't know if tactrix cables etc will work on a 1997 Liberty.

Un-plug negative terminal, pump brake, wait another minute or two, put negative lead back on. Done. It will turn over on the second try...It will also drive like sheizer until it re-learns...Usually takes a good 15-20 minute drive for me.