I wanted to get some input from the community on what my next investment should be for my 99 9-3. Should I buy... a koni kit? or a V2 downpipe and tuned ECU? A bit of background, I have all the parts I need for a stage 4 tune minus the DP and ECU. As for the suspension I have new control...

My clutch will need to be replaced this spring along with my turbo, so why not UPGRADE, right?:D Ideally I would like a TD04, aluminum flywheel, and new clutch and since that puts me so close to a stage 4 setup, I wonder, what kind of clutch do I need for stage 4?? Will a viggen clutch & PP...