I am tring to clean the clutter out of my engine bay. I am deleting the cruise control,abs and moving the battery to the rear storage bin. I want to keep my ac and power steering. What else is there and why?

 

What are your mods? There is Accelerated Warm-up System (AWS) and double-throttle. Doing so will avoid the high rpm cold starts and marginally improve flow through your UIM. You can also properly delete the AST and one of the small coolant lines that runs between it and the bottom of the radiator with a S5 filler neck. Not much else on the stock ECU. Emissions related items are difficult without a standalone.

 

no mods yet. Im just trying to figure out where to run all my wires and what holes I can fill in etc. I am going to single turbo and big vmount setup in the future. Trying to pre-fab the bay before I pull the motor.

 

if your eventually going single, keep all emmision stuff in place till then. then delete cat, air pump, but IMO i would keep the ABS while your car might be a nice day driver ABS is the only driver assist we have on these cars and i would keep it.

 

I am not saying you should but these are the things you can remove to empty the engine bay:
Oem air intake, ast, egr air pump non sequential twins, single turbo, wire tuck......