Welcome to Doug's Racing Blog!

-

Wednesday, January 27, 2010

Dyno Day!


Today, the rally car made a visit to the dyno at Surgeline Tuning. Dyno day is exciting, but can still come with a little anxiety. Did we remember to bring everything we need? Is everything assembled OK? Will this new, barely broken-in motor just explode when revved to redline?

Sean from RalliTek joined us there to team up with Tim Bailey of Surgeline to do the tweaking. Our car uses a Cobb Accessport which is pretty much the standard for Subaru tuners.

The very professional techs at Surgeline strapped the car to the dyno, and Sean and Tim sequestered themselves in the car, armed with laptops.

At first, there was some anxiety- The car only wanted to make 10 pounds of boost at high RPM's. Not good. But then, everyone remembered that the car is fitted with the required-by-rule 34mm turbo restrictor. Ouch. But to Tim and Sean, this just represented another element of challenge. In no time, the proper tweaks were made, and the car was turning out really solid numbers.

Some video of the very first pull:


The final results on E85 fuel:
240 hp at 4000 rpm

and

328 ft-lbs of torque at 3800 rpm.

Dyno Chart:

Surgeline has a really cool site that stores dyno results. You can see the results from you car and many others. Ours is here.

The results are just about what we expected. The turbo restrictor does its job- which is to keep power down so cars don't go too fast.

We owe huge thanks to Sean Sexton from RalliTek and Tim Bailey from Surgeline for the excellent service today. These guys really know how to tune Subarus.

Now, it's time to start prepping the car for the first rally: Doo Wops. We need to wrap up all electrical stuff- gauges, switches for all the rally accessories, and install some serious underbody protection.

No comments: