Author Archives: Airboy
What Not To Do When Tuning For Larger Injectors
When tuning for larger injectors, don’t go messing with the Mass Air Flow (MAF) table, or this could happen. Closed Loop Fueling First, some background information on how the Subaru ECU controls Air-to-Fuel Ratio at low load (idle, low throttle, … Continue reading
Dyno Dynamics Shootout Modes Compared
In a recent thread over at NASIOC I saw some inconsistencies in the data being presented. From what I can tell, there was/is some confusion or misunderstanding about what happens when “Shootout mode” is used. I decided to investigate this further. … Continue reading
Improving Air Flow for K&N SRI (02-07 WRX)
The K&N Short Ram Intake is a common modification that I see on the 02-07 WRX and 04-07 STI. It comes with a heat shield to help keep the heated engine bay air from entering the filter. The rubber edging … Continue reading
2009 BMW 335i…the first 22 hours
6:30pm Feb 27th, 2011 (15 hours before car pick up) Location: Portland airport. After flight delays at Calgary and Vancouver, we were relieved when the plane landed in Portland. Our stomachs sank as we watched the baggage carousel go around … Continue reading
Effect of Soft Snow Tires on Dyno Measurement Results
Does the soft compound, thick tread blocks, and high number of deep sipes used in a snow/ice tire affect how much torque/power a roller chassis dyno would measure? Yes. Winter tires lower the power output as measured by the dyno. … Continue reading
How Much Air for the TMIC?
I am sure you have seen carpet dryer fans being used to provide cooling for the Top Mount Inter-cooler (TMIC) on the Subaru before. Have you wondered if it is providing too much air flow relative to “real life” conditions? … Continue reading
New Office Furniture
Since my “office” is usually in the drivers seat of the customers car, my laptop had to be placed in the passenger seat. This required me to rotate my upper body 90 degrees and lean over each time I need … Continue reading
My (dyno’s) trip across the globe
Dyno packed into crates and put onto a cargo ship (YM Antwerp). In case you were wondering, if you have ships name you can track its position at www.marinetraffic.com. Makes a couple of stops on its way to Busan, S. … Continue reading