Archive for the 'Project Subaru' Category

Project Subaru

It Lives…

After 3 trips to the tuner, I finally have a stable car again. I still have lots of work to do, but I can drive the beast again without much worry. I still need to purchase a new fuel pump, so my numbers were a bit low still, but thats an easy fix. So next on the list of things to do.

  • Fuel Pump
  • Uppipe
  • Cams

The other change I would like to make is moving my MAF sensor from pull to push, essentially removing it from the intake line. Right now I’m pushing 340 whp, which is very conservative as I ran out of fuel.. (stock pump) and 15 psi on the turbo. With the above mentioned upgrades I should be back into the 410-420 whp range. We’ll see.

Project Subaru

Project Subaru Underway

Went to the tuner today… after the car being out of commission so long, I really had to deal with more than expected.

After a bit of a struggle, we were finally able to get the Cobb maps onto the ECU, they fought with the ECUTEK encryption, but all turned out good there.

Moved the car to the dyno… complete tune failure. Walbro 255 fuel pump was shot… just terrible, we popped a stock one back in as they were out of the Walbro’s. FYI, STI stock fuel pump will hold up to 350 whp. Started to tune again,… failure… Knock sensor was bad, spent many hours trying to tune around it, but the advance timing mechanism kept kicking in and just killing us.

Ended up tuning the car to the point it would run at stock power and low low boost. Need to order a new fuel pump, new knock sensor install and return to them for another tune at which point we can turn the boost up and gets some real numbers back out of the car.

Project Subaru

Coming Out of Retirement

Well it’s that time, the Subaru has been sitting in the garage for about a year now with little to no maintenance; and the time has come to revisit the project. I have adjusted my intended goals for car though. It will need to be a daily driver *gasp* (goodbye 100 octane).

The trip from North Carolina to Florida was not a good one for STI, after a brief incident with the trailer, a portion of the front bumper and the rear bumper were pulled from the car slightly. Fixable, but still hard to look at.

Subaru STI 2004 Subaru STI 2004 - FMIC

My list of adjustments to the car is in disarray at the moment. The current plan in my head was to find a local tuner, my search led me to Japtrix.com. I spoke with them for a few, explained whats going on with the car and it appears they will be able to help. The only drawback… new engine management system required from Cobb Tuning.