Getting ahead of the game, I’ve got plans to put some different turbochargers in the car but at the moment haven’t established exactly what they’ll look like. The motor is coming out so I can work on a few accessories and swap exhaust manifolds then hopefully within a couple of weeks will have a different set of turbochargers to evaluate.
6th time the motor has come out of my S4
A lesson learned from this time around, figure out how you are going to plug the braided stainless slave cylinder line BEFORE you install the product. I wanted to leave the metal slave cylinder in place since I had put some RTV around the housing to keep dust from getting into the bell housing around the slave cylinder. This meant disconnecting the AN fitting that goes to the metal slave cylinder. With the stock unit I had a small tube that would slide over the end to plug it when disconnected, not so with this AN fitting. After disconnecting the fitting and not having any luck holding the line up to keep the fluid in, or being able to find a suitable plug, I let the end of the line drain into a waste container. Next time around I’ll have a proper plug to put on the end of the line.
Decided to switch over from the stock intake setup to the one I have used since having the TiAL 605’s installed. The setup uses the EPL 85mm MAF housing, a 034 Silicone MAF Hose (a recent addition that replaces the RS4 accordion), and the RS4 Y-Pipe.
Since I am still operating with K03’s and the stock fuel injectors I have altered the tune to account for the new size MAF housing.
Finally, after a number of attempts to get the BoostManager software to register an RPM signal I had success tapping into a previously used wire that connects to a fuel injector. Eurodyne was very helpful throughout the process offering suggestions on where to try tapping the wire.
With the manifold pressure and rpm now being sent to the controller I can start to fine tune the water-methanol pump duty cycle table to better pair up with the K03 airflow and injector fuel flow.
Using the Injector Duty Cycle as a rough guide along with manifold boost pressure I setup the following table:
Next up I’ll be logging the car to see if I have any recurrence of the bog I previously experienced.
