My lancer is an 03 and the wideband is grounded to the metal. I am thinking of just unhooking the wastegate until I get done with my move. I am going to be in a much higher elevation so I will need to tune for that anyway.

Wow, that's melting pistons lean. :-/ what you mean unhooking the wastegate? Don't just remove the vacuum line going to it. You'll boost more

Do you have an adjustable fuel pressure regulator? Im not sure if you need one with the 03. Since the 04-06 use a returnless fuel system i dont have one but maybe you have low fuel pressure but someone would have to confirm this

By removing the connecting arm from the wastegate. This will allow the wastegate to flap around all it wants.


I don't. You bring up a good point though. I wonder if this will do for testing it:
http://www.harborfreight.com/fuel-in...ter-92699.html

I have an 02 with 440s and I don't have a regulator. No lean issues at all with my setup. What's injector scaling and MAF scaling set at? Did you use the right MAF scaling for the sensor you're using?

Running the stock MAF still and the injectors are set to 361. Thats based off some research on a wrx forum and here. What are your injectors set to?

Mine is right around the same for injector scaling. You're gonna have to do some regular logging of stop and goes and cruising. You want to log the latency and you keep adjusting your injector scaling until latency is as close to 0 as possible. Then you can start Doing some pulls and start tweaking everything in. I'm on speed density so my tune wouldn't be near the same. But you and the guy you got the ROM from probably live at different altitudes and no 2 injectors have the same exact flow rate

Here is where your problem is i have the evo maf! I highly recommend you get one its alot smoother with the evo maf especialy over 7 psi. Is your car a m/t or an A/T? I dont remember if i sent you the evo rom or the big map rom but either way its scaling is set for the evo rom im pretty sure

My car is A/T. I applied the stock maf settings to your big map. Also my transmission is shifting much better with your rom

You just changed your maf settings or you had them changed when u had your lean problem? I still recommend getting the evo maf and keeping the scalings i had

The maf settings have been the same the whole time. I will be getting an evo maf at some point hopefully soon.

You might want to consider getting an omni 4 bar map sensor over the Evo MAF, eliminate the MAF all together and go with a speed density tune. Really smooth driving experience and you can have a VTA BOV without any issues

I dont run speed density and i have a VTA bov and i have no issue at all my car runs smooth like stock so its up to you