Loren

5mm is fine... probably about half a litre over full, which is what you want for a track day or something usually.

If you don't have oil spewed all over the place then you are fine. Plenty of moisture builds up in the engine naturally, but is then burned off when the engine is up to temp. Oil level so low that the oil pressure light comes on is a lot more concerning

just going from a manual 5 speed to a manual 6 speed is a huge job. many many things that need changing.

Oh you could just keep the $1000 and not bother with the retune?

Probably not... still on the factory tune with loads of safe guards. Well you can pull the motor apart and look at the condition of the bearings... but you'd probably just see 200,000 km of wear more than anything. You could also stick an endoscope into the spark plugs holes to check for pitting on the piston crowns. I doubt you have done any damage.

Actually I wasn't even thinking about your tmic So yeah even worse not having the splitter as your intake charge will be hotter than it should be, causing detonation

That seems like the obvious thing, but you'd be surprised how hot you can get the motor before the factory gauge even moves. An aftermarket gauge would be better... but in your case I'd say not knowing anything would be better as you tend to panic quite easily. There is no way removing the splitter would cause overheating while casually driving along... even on the dyno it would not do anything... but get out on the track with constant high load and high speed... that's where you might find you can only do a few laps at a time before the water temp is climbing too high. I don't think the factory computer would save you from overheating either... an aftermarket computer can do anything you want.

You need to have something to divert the air down through the intercooler and under the car... even if you didn't have a tmic, you still need the air to be diverted under the car. If you have no splitter the air just hits the firewall and creates a high pressure zone, meaning the air coming through the radiator at the front of the car, can't flow nicely ...and I bet if you hit the track it would cause over heating. Happened to me... no tmic... took splitter out... caused temp issues.

I think the measure is when wide open. Supposedly the JDM STi runs a higher static pressure as well... 53psi vs 43psi for the wrx or US spec cars. You can always get them cleaned and flow tested so you know exactly what you have.

550 in the v5/6 sti

It's more complex than that... there are two pipes in the up pipe yes... but each one of those pipe connects to two exhaust ports... so if the lengths are not equal, the pulses will still collide when they get to the up pipe.

Yes it is... integral means intrinsic in this case. A twin scroll turbo without a twin scroll header would essentially not be a twin scroll system. Pulse isolation is a big part of the system... you only get that with EL.

EL is an integral part of the twinscroll system... so yes. I think this is true... NZ spec STi were 2.5 single scroll... JDM spec STi 2.0 twin scroll... there are some Singapore spec 2.0 STi single scroll around too.

The back pressure will be insane... you'll probably melt everything from valves to turbine

Or e85

If you are spending money... go to top feed... side feed is too limiting. There are a few affordable top feed rails around... fittings can get a bit pricey and need an FPR... but then you have a million more options for injectors... I plan on getting some XSpurt injectors from MSEL.

Can I ask why? Are you going to be running a giant turbo that won't spool until 6000/7000 rpm?

good grief

I wouldn't do it personally... the sock on the pump is all you have between the crap floating around in your tank... and the injectors.

How does it run with no 02 sensor?

Seem to be quite popular with the towing crowd. I've gone diesel now too, love the torque so much after 18 years of none turbo Legacys with no bloody torque or power to speak of.

what seal costs $230 from Subaru but is $30 on partsouq?

What exactly is wrong with the idle? looks stable to me.

same

makes sense... the torsion bars on mine are brutal... when i first got it, it had no spoiler and I had to disconnect the boot release because it would fly open so fast I though it would smash the rear window one day.