Huge thanks for the replies....this board is going to be awesome. Can't wait to keep learning more. Once you start with these cars you can't stop.
1) Actually yea I have a K&N filter(actual filter insert only)........appears to be in better than decent shape. I've heard about this filter oil stuff........is this a common problem getting sucked into the MAF like I've heard before?
2) RPMS go up.....just very slowly. The revs climb as if the car had zero or no boost but clearly the gauge is showing peak boost at this point. Hits about that 5k mark and the car goes from climbing reves and zero acceleration to rocket.
When I bought the car used, it did need clutch and flywheel replacement. Along with the baseball for the shift knob (literally) gave me an indication that someone had toyed with the car, and had some fun along the way.
However, I did some very basic homework and had an idea of what to look for like aftermarket downpipe , air intake, exhaust etc. Obviously some the turbo elements are/were out of my league. I honestly wouldn't be surprised if the guy before me had stuff on there and took it off as I later found mounts/spacers were missing causing the tranny to bounce off the exhaust out of nowhere one day.
If there was a bigger turbo on it - I'm guessing I would need to see some supporting mods with it and that if it had a stock exhaust and downpipe on it I would expect there to be some problems? I can dig in there, is there going to be a clear indicator(stamp or engraved part number of some sort) that its stock?
Might add - cant exactly recall but there are some "DENSO" parts I've seen under the hood. Are these typically in Subaru's because i thought they were aftermarket? Maybe part of the ignition sysem? Sorry for the vagueness here, can't recall and honestly not sure although my guess is the ignition system of some sort.
I've seen pics of where the "duty solenoid" is supposed to be, (under a cover above the air intake)...and there is clearly no cover. Not sure if thats a different year but maybe an indicator the car was modded prior?
Going to reflash this weekend to 91 and 93 to see what happens....I'm just curious that when in Cobb it refused to boost above 7psi after months of working great and now stock has this odd problem.
Thanks for the help guys, going to look into all the suggestions. I've heard there is a trick with a battery to check the BCS?
Last edited by mpz530; 09-09-2009 at 10:31 PM.
Reason: additional fact- Denso parts