chuckzul

I've got the same problem (i.e. P0304 code) on my 05 GT. After doing some searching and doing some research on this site, I've noticed an alarming trend of #4 cylinder coil pack, injector, and OCV failures. Here are my problems. My car idles poorly, not shaking, but poorly. It starts off with a bad stumble, but when it reaches a certain rpm, it starts to run better, not perfect, but better. I've replaced the drivers side OCV, this "seemed" to have made the idle better than it previously was (maybe it was wishful thinking on my part), still threw a P0304 code. I've checked for leaks and can find none. Here is my problem that nobody else has seemed to touch on, it has a lazy start. What I mean by that is, when I start the car, it is not the crisp, on one crank, start, it seems to roll before starting (hope that makes sense). The first shop I took it too said the compression was low in that cylinder, but that was before I replaced the OCV, so, I may have multiple issues going on here. I'm going to replace the #4 coil pack next, and then the injector, but, after that, I'm out of ideas. Any other advice out there from the esteemed panel of experts (no kidding, you guys are a lot of help). Thanks.

I had the same problem,exactly, it turned out to be the rear wheel beraings were shot

Good advice, except the dealership will deny any stuttering and surging BEFORE you take it in, so trying to convince them to fix this aspect of the car seems pointless (my dealership literally laughed at me and denied any knowledge of a problem and wouldn't even look into it. In other words, if it ain't broke, we ain't gonna fix it, mentality).

OK, I'm going to ask an off the wall question. I have an aftermarket nav/head unit (Avic-Z1), I can buy a PAC SWI-PS to connect the head unit to the steering wheel controls (theoretically, since they do not show a Subaru anything as being on their supported vehicle list). On the installation directions, there are 3 wires that you physically hook up. A red (switched +12v), a black (ground), and a third wire (either a white, yellow or orange wire) that hooks up to the steering wheel connection. I printed off the wiring diagram for the steering wheel controls and I see that there are 2 connections (a purple/white for pin 7 and an Orange white for pin 6). Which of these connectors would I tap into from the PAC unit using a single wire?

I agree. My H-Techs are wonderful. Ride is near stock (i.e. comfortable), body roll is reduced, but the bumps are a little harsher. Also, watch for the curbs, and those concrete parking lots stops.

I would also add on the rear shocks that when you reassemble them, to tighten the top bolt on the shock down completely (i.e. until it stops and then tighten it down some more). This is the mistake I made and the first test drive revealed clunks from both rear shocks because I did not tighten them down far enough.

Great writeup. I was contemplating the Cobb set, but I think I will go the Cusco route as there seems to be no issues with them so far.

HID's for the Exterior - headlights section