de_engineered

iTrader: (24)

Ok... approximately 8 hours ago, I put a Perrin top mount on my 04 WRX, having previously had a stock STi one.

Those at the Va-Jay-Jay meet will know of the schennanigans to do this - my thanks to you all again.

With some work, it got in there just fine, though this big top mount doesn't have mounting bolts for the vacuum hard lines that attach to other intercoolers; the stock WRX and STi ones obviously do, as did the eBay one for that matter. It's moving freely a bit, but not banging, and when I checked after getting to work, no hoses had come off.

While testing it out after getting in installed, my revs were going quicker than previous, maybe b/c of the higher flow, maybe because I was lead footing it more to test it. Wasn't paying attention to the tach, I went into about 7200 RPM (yeah -_-; ) in probably 3rd gear, hit the fuel cut, boost go woosh, CEL. Gently went back to the meet, disconnected the neg terminal on the battery for a bit, cleared, went home.

Today, while accelerating a bit near the Scott Creek exit on 680 N, at about 3500 RPM, a little under 80 MPH, I heard a soft thunk from the engine. Boost dropped, and a CEL came up. I was gentle going the rest of the way to work, about 2 miles, and was able to hold boost (again, wasn't pushing it) and drive as otherwise usual.

I had another CEL about two weeks ago. Briefly I had a big eBay TMIC, but developed a boost leak from a stripped BPV thread (didn't come with a gasket, when I put a fresh one on, the thread went - my bad/cheap soft aluminum/dunno). Went back to the STi one from there. While testing this on the road, the elbow to the turbo outlet blew out (probably not tightened as tight as it should have been), CEL. Fixed it on the road, did the battery disconnect reset, bueno.

Had yet another CEL a while further back, same not paying attention/high rev fuel cut deal, same battery fix - to be clear I do not make a habit of doing this, and this was the first time I'd ever had that happen to me on any car. I usually shift at 3-3500, might push it into 4K range when accelerating, stay under 6.5K between gears when (infrequently, less than once every 4-6 weeks) pulling hard.

My ODBII dongle (for use with the Android Torque app) is somewhere, and my Access Port (which I have not used yet) is at home so I can't check the code just yet, but any diagnoses in the meantime?

Rev. Rob Large

iTrader: (11)

Any speculation is pointless without dem codes.

de_engineered

iTrader: (24)

Suppose so :/

Anyone in south Fremont right now with a ODBIl Bluetooth?

esousa22

iTrader: (10)

I'm in san jose and have an obd bluetooth if you need to borrow it

Heedz

iTrader: (51)

As I said gimme codes I can help as much as I can.

de_engineered

iTrader: (24)

If you're free today between 11:30ish and 12:30 ish I could swing by your way and check things out. Meet me at a McDonalds etc. and I'll buy you lunch. Think I have your # still from when I bought your stocker WRX springs back in December. PM me or text if you have my number.

Copy that. Nice thing about Torque is it'll do a code error report, should be informative...

de_engineered

iTrader: (24)

Well ok... Went to lunch, light lit all the way, went to tank up (filled 10 gallons, so was on 3 gal or so left), and...

CEL flashed off.

Ok...

It stalled briefly (sorry folks, lightweight flywheel still gives me grief), and flashed again, but, otherwise no more. Pulled a little bit on the way back, seemed to hold up strong.

I'm wary of fixes that fix themselves though :|

Superusdm

iTrader: (6)

For future reference- a pepboys or autozone can read the codes, but only if they have a service station at that location.

de_engineered

iTrader: (24)

Good to know, thank your sir.


I finally got around to installing my Accessport to check the codes, and while I was fetching a USB cable from my folks to connect it, my code light went out. Huh. So unfortunately to date I don't have any idea what kind of code I was throwing. But for now at least it's not doing so... Again though, fixless fixes... :/

Loaded up the Stage 1 map (v130, if it matters - seems a little out of date per some research I did), gently pulled a bit here and here... No CELs, no funny business, and some more mid and top end. Might be hitting 15PSI now too; gauge is in MPa, so I'm just eyeballing off of 0.1 MPa = ~14.7PSI.

I'll be ginger with it for a bit, see what happens.

MonsterGC

iTrader: (6)

hmmm alright, switching the tmic shouldn't cause you and check engine light unless, major vacuum leak. (either blow out the one to the turbo or gaskets are leaking from the tmic)

The fuel cut deal sounds like, its from maybe low fuel? A lot of times when taking corners little bit faster at 1/4 or around there (some people have experienced higher than that at higher G corning)

All the fuel sloshes to the driver side of the tank thus no fuel is being pumped from the tank, however stock does have a jet pump which only works if there is fuel returning from the engine.

You can a make a slosh box like the sti has or do that and wire in your own external pump to draw fuel back into that side.

Fuel starvation is a no no =]

Wrote a short easy DIY on one of the methods.
DIY: Anti-Fuel starvation inline fuel pump mod! - Subaru Impreza GC8 & RS Forum & Community: RS25.com

de_engineered

iTrader: (24)

All the times I've gotten CELs have been in straight line acceleration, hmm. At least once I was low on gas, so maybe it was getting pushed up and away from the pump?

I've been meaning to boost leak test my system, so maybe there I'll see if there's anything I've missed. As said, car was doing fine last night, decent acceleration, and on a more aggressive map.

A Walbro 255 is going on soonish, sounds like a good time to put your mod in. Thanks for the lead.

MonsterGC

iTrader: (6)

If you still have stock fuep pump there is a chance it just at the end of its life.

de_engineered

iTrader: (24)

Car's at 125k, might be that.

de_engineered

iTrader: (24)

Happened again last night, cleared itself before I could check the code. Happened again this morning, moderate acceleration, about 3500RPM, 80ish MPH, boost just dropped out. Car seemed normal afterward.

Code is P0244, wastegate solenoid issue.

Speedelement is parting out a WRX, maybe just grab the boost solenoid off that car and see if that'll fix 'er?

Heedz

iTrader: (51)

check out the stuff i suggested last night report back.