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Snoshado's FXT Journal

124587 Views 766 Replies 97 Participants Last post by  Snoshado
Snoshado's "Because Racecar" Build Thread

Random Mods

  • 2006 STI Longblock
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  • Fuel Injector Clinic 1100cc Injectors
  • Blouch TD06 20G-XT Turbo
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  • Kartboy Short Shifter
  • Mishimoto Oil Catch Can
  • Group N Motor Mounts

  • 2005 STI Transmission
  • 2005 STI Rear Differential
  • 2005 STI Front/Rear Hubs (5x114.3)
  • 2005 STI Driveshaft & Axles
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Wheels / Suspension
  • Enkei Rajin Wheels 18x8"
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  • 2008 FXT Gauge Cluster Surround
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  • 2006 STI Shifter Surround
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  • Prosport Boost Gauge (52mm)
  • Prosport Oil Pressure Gauge (52mm)
  • STI Floor Mats
  • WRX Limited Front Seats
  • Polk Front/Rear Speakers (DB651)

  • Front STI CS2 Style Lip
  • 2008 Sport Front End (headlights, grille, hood, fenders, bumper)
  • 2013 STI HID Projectors + OEM Harness (retrofitted by me!)
  • Rear Spoiler
  • Subtle Solutions Skidplate
  • 2008 Sport Tail Lights
  • 2008 Forester Sports Sideskirts
  • 2006 OEM STI Front / Rear Emblems

Wish List

This was my first real dirt drive out by Pyramid Lake, NV! Good times :icon_wink:

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Alright. I'll replace the sensor and hope that solved my issue.

I'm looking to replace the O2 sensor right after the downpipe, correct? Or is there another sensor further forwards?

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There is one further forward in the header just before the up pipe. I would try to track down a vacuum leak first. It is basically free to check all the hoses and do a smoke test. The front O2 could have fouled from you running rich or just age.
The O2 sensor after your downpipe doesn't do much. Mine crapped out this spring and had no noticeable effect on the car aside from flashing the cruise light...

I would rule out the rearward O2.
I would definitely replace the front 02 sensor. My car ran very rough for a while and I could not figure out why. It would struggle to idle at the right RPMs and the motor would kind of pulsate. As soon as I replaced the sensor everything was buttery smooth. It's a pretty cheap part at Autozne, make sure you get the Denso brand which is the best you can get.
Front O2 Sensor replaced, problem still exists - though not to the same extent. It doesn't shutter as badly as before but still bogs down upon coming to a stop.

My tuner said to remove the Cat in the down pipe and my issue will be solved. I don't know if I believe him and if it's worth the $50 when it may be an ECU issue.. Input?

Agreed, I don't even remotely see the connection between the idling and the cat. I would still put money down on the vacuum leak.
Easy way to check for a vacuum leak is to spray some brake cleaner near the vacuum lines and see if your RPMs shoot up, the brake cleaner acts as a fuel for the engine. Good luck!
Cabin air leak anyone? When the FXT is at or nearing full boost, I can hear air whooshing inside the cabin from under the dash.. Time for some hot glue to seal the turbo hose to my boost gauge sender. Hopefully this solves my issues!
Hot glue+hot components=melt.
Hot glue+hot components=melt.
Would the air from the manifold to the sender be hot...?

I could always use epoxy instead :)
you have an obscene amount of stickers
you have an obscene amount of stickers
In a bad or good way?

(they're all gone now by the way!)

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it was just an observation, not a compliment or dig. I never liked stickers, I only had 3 on my car, 2 IAG on each rear side window and a this one when I was single

promptly removed and I started dating my now wife though and always a little weird when my mom or cousin or friends significant other rode shotgun
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I'm going to put a ton of "stickers" on my car very soon... I'm tired of my sub-par JBP paint and have always liked white Foresters... *hint hint*

I could see where that sticker might get you in trouble! :lol:

In other news, my center console is black and I've discovered that I have a Kartboy Short Shifter - something I'll promptly be replacing! I never did like Kartboy and now I know the cause for every single issue my car has ever had. :biggrin:
Agreed, I don't even remotely see the connection between the idling and the cat. I would still put money down on the vacuum leak.
I had multiple leaks :icon_redface:

Some were fixed and this is now on the way:

Hopefully this ends my idle issues!!!! (and then I can finally get my car retuned!)
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(and then I can finally get my car retuned somewhere else!)
Let me fix that for you.
Man two for two! I can be hired as a consultant if you like. :cool: Glad you got it sorted and at this point I would strongly consider a remote tune. There are so many reputable shops that do it now. I have a remote tune for the simple fact that the nearest "good" tuner is around six hours away.
I now have a blog dedicated to this Forester!
Check it out here!
It's basically the cleaned up, prettier version of my journal!​
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