Just curious. If someone wanted to add forced induction to an S5 n/a, could they use the S5 TII ecu and boost sensor and then upgrade the unit to an Rtek and tune it? If not, can the Rtek for the n/a be used to control boost?

 

I would think you would have to match all the harness wiring and use the turbo AFM.

and no you can't control boost with any Rtek. the s5 boost control solenoid is just an inline bleeder valve anyway.

 

The ECU, MAP, and AFM all need to match (i.e. all from a turbo car). Not 100% sure about the harness, I thought you could use the NA harness without too much trouble, but maybe someone else can confirm. I'm sure it's been done already, might be able to search for the answer..

 

I don't need to control boost with the Rtek. As far as I can tell, the harnesses are the same between the TII and n/a. Only 2 things change. One is the VDI solenoid and the other is the aux port solenoid. Obviously the TII ecu can't control them. The options that those plugs go to on the TII are not needed for operation of the vehicle. One of them is the factory "boost control" but I've got that covered. I'm planning to wire the VDI and aux port solenoids to rpm switches anyways. I should be able to just plug in the TII ecu, and swap out the boost sensor for the one from a TII and be just fine. I guess I'd need the AFM as well. As long as I can make a TII ecu work then I should be fine.

I guess my real question is, is the S5 TII rtek unit programmable like the n/a unit? If it's not, this won't work as I'm going to have completely different map requirements than a TII.

As long as the TII ecu can be made to work on the n/a, the rtek should work just fine.

 

It will be, once it's released. Its currently in beta testing.

 

the na harness is compatible you just have to swap a couple sensors and wires, and have the arm and ecu from a tII. There is a thread in the 2nd gen forum about exactly how to do this.