Ares3985

https://legacygt.com/forums/showthread.php/comprehensive-fuel-pressure-thread-109863.html

 

This thread should answer all your questions!

Yeah I read that a few times. A bunch of people w different answers. Vacation pics show to tap into the top line closest to the front for the pressure test.

This is where it says to put it but other guys are talking about the return line. Which is bottom of the stack

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Can a bad front o2 sensor cause lean at wot but not during regular driving? My tuner had me smoke test. Found nothing. I am checking fuel pressure tomorrow but he sent me the second map and wanted me to datalog and see if it was different. I never made it out of the garage. As soon as I started the car I got a cel for non communicating front o2 sensor. I have one on the way but I am wondering could that starting to fail the day before have caused it to go lean. Also would it cause soot? When I started the car at the time of the o2 failure. It shot soot all over the garage floor. I’ve never had any soot before. Obviously it’s from what’s going on w the a/f but wouldn’t that mean it was rich not lean? Idk maybe I’m wrong.

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Alright thanks. My gauge comes tomorrow so hopefully it tells me something

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So my tuner says I have a lean condition. Told me to smoke test. I did that and came up with nothing. Next he wants a fuel pressure test. So I ordered a test kit and it should be here tomorrow. He says I should be looking for a 1:1 ratio with manifold pressure while going to full throttle. So from my understand I should tee into the feed line after the reg on my fuel. Mount my gauge so I can see it and then monitor manifold absolute pressure on my accessport. So if I get 45 psi let’s say on the fuel pressure gauge then I should see 45 psi absolute manifold pressure while increasing throttle?

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So all that is needed to be done is tee into the feed line after the reg? Warm up the engine and the. Test under throttle? Or do you need to actually test this while driving? My tuner wants me to test fuel pressure relative to manifold pressure 1:1 at full throttle

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Was it a re-built turbo core you got then? In that case the rebuilder may have considered that it's good enough.

 

 

The amount of leak you'd get there would be minor.

I don’t think it was rebuilt. Just in good condition.

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Looks like a wear issue that is just because the turbo is getting old. I would plan for a replacement since if you have wear there then it may be on its last legs.

Hmmm not great news. Just got it. The shaft has absolutely no play and the wastegate seats nicely and opens smooth as butter. It doesn’t really seem too worn other than that one area. I just don’t see any way of remedying it. Unfortunately it is a moving part so I can’t even plug it w anything. Well. I guess I’ll run w it as is

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You can bend it very slightly but it's very difficult to bend. My guess is your flapper bushing has moved and is allowing the wastegate to leak.

Just wanna make sure we are talking about the same thing. This is where my leak is.

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Anyone know if you can tighten the small arm that the actuator connects to? I have a small leak coming from it and not sure what the fix would be?

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I have been struggling with going Ewag or not. I was Ewag on my 09 WRX, and it was a monster with all the parts on it. I woke the dead when I was full on the throttle, and I loved it. People would lose their mind when I came past there open window and I hit rev limit with 3 nasty backfires and hit that shift dead on into 3rd gear.

 

Problem is No one would play with me in my town after knowing what I had done. I went to one of the nights where all that car meet up and let my EWG off and the only guy that would play was a Mustang with a procharger , with bigs and skinnys.

 

So now I am just leaving that in the past.

Yeah. I don’t think it’s worth the attention it will get. Better off just cutting my losses and getting the car put back together. Sooner I am done the sooner I can tune.

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Thinking to not even go w an ewg and just put my aftermarket catless back in and call it a day

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So I was all excited this morning to dump some parts in. Vf52, Cobb intake, gs 3port ebcs, and swap my aftermarket uppipe w the grimmspeed ewg I acquired. So I spent all day tearing down and putting in parts. Found out that my turbo had been swapped previously w a vf40 instead of a 46 and that wastegate has been running half open (bent). Didn’t matter. I had a vf52 to drop in. So after fighting w everything getting it all setup I had the turbo and the wastegate setup and my downpipe and exhaust put back in. So I decided to do an exhaust test like I usually do when messing w anything exhaust related. Turned my shop vac to blow, shoved it in the muffler and went around w my soapy spray bottle. Checked all the flanges. Checked the downpipe the top of the uppipe and the bottom. Then I decided to spray the flex section of the uppipe. ITS BLOWING. I’m so annoyed. I spent all day doing this just to find out the uppipe I had gotten is garbage. So now my car is still half apart in the garage and I must decide whether to buy a brand new one or go back to my regular uppipe. I think what annoys me the most is that either way I have to drop my downpipe, midpipe, exhaust manifold and uppipe again. So what did I accomplish today???? Not a damn thing.

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If fueling hasn't changed it'll idle safe. Just no drivey.

Just a pump. No injectors

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Can I start my car after installing a new turbo, intake, ewg, and boost controller. I’m not going to drive it but I want to check for oil leaks before it gets tuned.

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Yeah they leak past the guide and valve stem. There needs to be clearance there so the valve will open and close. The clearance will tighten up when things get hot and it won't leak as much.

Ok great. At least it isn’t just me. Does this cause boost issues?

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Does anyone have a tial MVS ewg that they have bench tested? I got mine second hand and figured I would make sure it was all good before putting it in. So I hooked an air line to the fitting on it. If it is less than my spring pressure it just kind of leaks out the dump tube. To fully open it I have to give it a shot of air that is more than my spring pressure. I’m just wondering if this is normal? I dont want to put this in and start my tune and the. Realize it is messed up and have to to stop. Obv it is leaking out air from the vacuum line connection which doesn’t necessarily mean that exhaust will be dumping all the time. I just don’t know and wanna be 100% before going forward.

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Where did you get your vf52?

I'm looking at upgrading mine also. ebay has reman ihi ones for $400 but always weary of those lol

I got mine off someone who was doing a swap. As long it’s an IHI turbo I can’t see it being a problem. Read the reviews.

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Did you get the uber rare LGT specific hood splitter for that TMIC?

 

 

 

If not, a member (Boxkita) had a run of them made and started a group buy you might be interested in.

No I did not unfortunately. It’s impossible to find. I saw boxkita version of it. I’m still on the fence about it.

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Ok. Sounds good. Have you done anything at all to the transmission so far? Do you know what power level you are at currently?

No I haven’t touched the transmission yet. I have had the car for like 3 months maybe and have driven it like 300 miles lol. It hasn’t been on the dyno. Probably getting an etune there is one place like an hour away but they are very expensive supposedly.

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You can try some of the suggestions I mentioned right now and see if shifts get better at redline. What sort of power are you looking for? What mods etc.

I already did stage 1 and 2 Cobb. Now I just did the fuel pump, new Intercooler, vf52, Sf Intake, and I’m swapping my aftermarket uppipe for an external wastegate. Not needed but I want the noise lol. Hopefully this should make a little more power. Add the VB next and this thing should be a blast to drive.

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Just don’t want 2 sec shifts. The paddles are pointless with how fast they shift. I wouldn’t call it sport mode at all. I’m gonna do the vb after my tune. Wanna get all my power set up first.

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Anyone know a good place to get decals? I want to replace the process west decal on my Intercooler and I can’t find one anywhere online and process west doesn’t answer emails or instagram messages. I know I could go to a sign place probably and have them make one but I was just wondering if there was a website that had any for sale already. I searched amazon, eBay, and just a general google search.

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Resetting the tcu did nothing for me. 2-3 shift didn’t bang for about 50 miles but then it went right back to being sloppy.

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Aem pump is in. Also got a process west Intercooler. Got a boost controller and an external wastegate. I know the wastegate is not needed but it is definitely wanted. Vf52 and Cobb SF sitting on the shelf just waiting.

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Arm pump is in. Also got a process west Intercooler. Got a boost controller and an external wastegate. I know the wastegate is not needed but it is definitely wanted.

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