project.ng » stasis

JHM longtube headers and STaSIS cat-back

admin — Sun, 24 Jan 2010 03:52:08 +0000

The parts we were waiting on came back from the machine shop and we were able to complete the exhaust installation. The headers sound great with the cat-back; angry outside of the car while reasonable inside the cabin. The piping is 2.5" through and everything is connected with v-band clamps.

You can click the video for a higher quality version.

STaSIS/Alcon brake systems

admin — Sat, 18 Jul 2009 10:31:15 +0000

My brake system upgrade arrived at Achtuning today. I choose to go with the STaSIS/Alcon 370mm (14.5") 6 piston front kit and the 305mm (13.0") rear rotor upgrade. The kit includes rotors, pads, Motul 5.1 fluid and Goodridge stainless steel lines, and necessary hardware.

I took the time to weigh the new brake system components:

Front carrier - 1.4lbs
Rear carrier - 0.6lbs

Front Alcon rotors 14.5" - 14.5lbs
B6 S4 OEM 12.25" - 26lbs

Rear Alcon rotors 13.0" -13.3lbs
OEM 10.0" - 9.4lbs

Front Alcon 6 piston calipers: 7.8lbs

STaSIS 4:1 center differential

admin — Tue, 08 Jan 2008 09:16:26 +0000

After a few weeks in the shop, we installed the STaSIS 4:1 center differential on my B6 S4. The stock differential provides 2:1 torque distribution, with the modified STaSIS unit we’re able to provide 4:1 just like the B7 RS4.

I have not had a chance to take the car to an HPDE yet, but I have noticed an immediate difference coming out of the apex of a corner. Typically when you’re exiting, the car begins to under-steer; with the diff the moment you begin to under-steer the power is transferred from the front to the rear and we can neutralize some of this under-steer.

There has been no odd behavior from ESP or ABS. The only thing I’ve noticed post-diff has been some Quattro binding at low speed turning, such as in parking lots.

This modification is available for 5 and 6 speeds, manual A4/S4s.