Hi
FIRST POST EVAAAAA!!!!!!
I am new to tuning Subaru's and recently brought a 2003 Subaru Legacy B4 3.0R UA-BLE variant 14 with the 5EAT box. Love the car, so far only change I have made is dual mufflers and removing the second resonator and replaced it with straight pipe and replaced all springs with cobras and cobra custom front shocks along with 18"8.75 mags.
At the moment the car has a tendency to give all or nothing. When I first brought it from the dealer it chewed through some oil in the first 5000km's but since doing a full change to 5w40 full synthetic it has not used any in the 2400km's since I also replaced the air filter at the same time and cleaned the MAF. When looking on my obd scanner everything looks fine and I can't see any issues. I am currently running 98 octane which it likes a lot and I know my right foot is probably to blame but my fuel economy on the dash shows as 5.4km/pl and that's really not to great even for around town. The best figure I was able to get out of town on the open road was 12km/pl.
The spark plugs are the next thing I am replacing hoping they will help a little but I also heard the later models had much better maps then the originals is this true?
Mine is a 2003 which I believe was there first year, but there was no major changes to the engine or ecu till 06 when they moved to a 1mb ecu from what I have read. Also the engine remained unchanged till 2009 just with further mapping and ecu updates done to accommodate drive line changes etc.
Could I potentially download a stock 2005 model map from a JDM 2005 with the 5EAT transmission and flash it to my model? I would be looking to get a better base map before I start tuning and hopefully help the drive by wire tuning, remove the stupid factory limiter the 03 has as well as improve fuel economy and possibly throttle response etc
Not looking for a fix all but a head start before I have to take it to the dyno would be great. I priced up various options from remote tuners etc but found a company locally that said if I supply my laptop with the software they are willing to put it on the 4wd dyno they have and charge 120per hr for a tune.
In the future I plan to get raptor headers re do more of the exhaust get a proper CAI up size the injectors and the fuel pump and get some strut braces and new bushes all round along with a re spray and some interior alterations.
Thanks for any help in advance