xluben's FogTurbo Bugeye

6 minute(s) of a 297 minute read

Quick speedo video with the KillerB header that I put on over the weekend.

50-100mph time on this is just under 4.3 seconds. I was in the 4.6 to 4.7s range prior.


*Stock photo from RSD. Mine is actually a standard one with a custom EWG flange and dump.

Just for fun I'll be going on the local Mustang Dyno at RS Motors this weekend. Any guesses what I'll make?

Full list of updates from last week/weekend:

• 9/17 (Wed): Installed KillerB Header and uppipe w/custom EWG setup. EWG wouldn't clear downpipe so a DIY EWG block off plate was installed. Car was driven with with care taken not to overboost.
• 9/18 (Thurs): Swapped downpipe for an HKS flat plate downpipe. Very easy to work on, easy access to bolts. Fits perfectly with EWG setup. Cheap. Highly recommended for anyone with an EWG (bellmouth or divorced is not needed).
• 9/19 (Fri): Wired in a serial cable for logging my AEM wideband. Tuned with Nuke. Smoothed out AFR's. Car is still hesitating in the 3,500-4,000 rpm range. This has been an ongoing issue for months. Have tried many things (plugs, coilpacks, exhaust leaks, injectors, fuel filter, etc, etc), but nothing has worked so far.
• 9/20 (Sat): Shot a wedding. Didn't work on car
• 9/21 (Sun): Swapped fuel rails. Car had 08 STI stock rails installed and the GR STI's have a known "stumble" issue. Put the stock 02 WRX rails back on. This smoothed out a small fueling annomoly in the 2,500 rpm range (normal stumble range), but the bigger hesitation close to 4,000 rpm was unchanged.
• 9/22 (Mon): Actually late Sunday night, but it was well after midnight at this point. Swapped the cam position sensor and the hesitation is completely gone. My car uses the Cosworth cam sensor bracket, so I'm not sure if it was a bad sensor or just bad placement with the bracket (known issue). I'll keep an eye on it in the future and shim it if necessary.

9-26-2014

A couple new things from last night.

COBB AccessPort V3

AccessPort installed and OEM 04 Tail Lights

Daytime Shot of the 04 Tail Lights

EDIT: Before and After

9-29-2014

I had my car dyno'd at the MNSubaru 10 Year Anniversary Meet and Dyno Day held at RS Motors on Saturday.

The car made 457WHP/ 422WTQ on a Mustang Dyno (for reference the car ran 10.9s @ 126mph the last time at the track).

Here's a larger version of the plot:

RS was nice enough to log the pulls on my AccessPort, so here's a Virtual Dyno comparison just for fun.

I have the weight set to 3500lbs and the calibration set to "Mustang" and the numbers are pretty close.

Change the calibration to "Dynojet" (what I normally use) and the numbers go to 525WHP.

Compare that to my most recent road log and it reads 525WHP with the weight set to 3300lbs.

Typically I've just been using the default 07 STI profile (same chassis and gearing as my car, but higher weight) and that makes it read 561WHP.

No real point to all this, other than to show that dyno numbers (especially Virtual Dyno) can be manipulated considerably. But if you do have the correct inputs, the numbers can be very close and the curves look quite similar to on an actual dyno.

The only thing I think I really need to take away from this is that the 3300lbs (3100lb car + 200lb driver) is likely going to be better than the 3550lb (3350lb car + 200lb driver) that I had been using in the past.

The car was under 3000lbs on the scale at the track but that was with floor mats out, no tools, glove box and center console cleared out, no Recaro baby seat, etc. Around 3100lbs on the street is probably pretty close.

Quick little comparison of the powerband on some different Subaru turbo setups.

All of these were cars run on the same Mustang dyno and the same day. Manually plotted in Excel.

457WHP - 422WTQ - 2002 - Subaru - WRX - E85 - 27.9PSI - 60-1 - 2.5L - 6MT, FMIC, EWG, etc.
343WHP - 360WTQ - 2008 - Subaru - WRX - E85 - 23.5PSI - 68HTA - 2.5L - FMIC, EWG, etc.
256WHP - 257WTQ - 2015 - Subaru - STI - Pump - 15.5PSI - Stock - 2.5L - Stock
204WHP - 192WTQ - 2002 - Subaru - WRX - Pump - 13.9PSI - TD04 - 2.0L - Stage 2

10-1-2014

New parking ramp by my house.

Installed AEM 3.5 Bar MAP Sensor:

10-2-2014

Dyno Video: