So I am currently swapping my engine to the s5 13b turbo II in my fc, and i was going to clean and repaint the engine bay. I was wondering what I need to keep and what I can remove. I want to keep hot and cold ac for the car. I see alot of car with nothing in the engine bay but the engine its self, so I was wondering what I can do thank y'all!

 

What ECU do you plan on running? If stock, you'll want to at minimum keep a few of the items that are there to stabilize idle (such as the BAC).

If you search "emissions delete" you will find this has been covered in full many times before. Many vendors sell block off plates, and you will find vacuum line diagrams to help you with the delete.

As a word of advice, unless you are already intimate with these cars and/or fully understand what you're removing, I would advise against ripping things off just because you've seen it done. Over the last 30 years people have done a lot of stupid stuff . This exact job is why a lot of cars end up not running or the project given up on because people cant keep the car running/driving well and don't know what to do about it. Many long time owners end up INSTALLING these deleted components years later when you realize the cons of removal outweighed any perceived pros.

 

I want to run a standalone ecu

 

My feedback still stands. The only thing that changes is consult your tuner and see how confident he is in keeping the car drivable with what ECU you want to use and what systems you plan on deleting. If you're going to learn to tune on the car, again I would highly advise keeping a lot of the normally deleted components.

 

Noted, Thank you!

 

Stock always works.

for removing stuff, go by system. for instance you want to keep the A/C, great. how about the power steering? cruise control? EGR (if S4)? the catalytic converter/air pump?

 

It sounds like you're wanting to go for a wire tuck show car look. All I can say is unless youre willing to go all out on that, its probably worth not changing much. The big players are A/C and Power Steering and that's entirely a subjective thing on whether you want to keep them or not. But the small emissions things aren't going to suddenly all add up and equal a wire tucked engine bay. A lot of work and planning goes into something like that. Im removing everything because im building a track car and I want to be able to work on it easily. For just a show car or something you just drive around for fun, theres no reason to screw with the emissions equipment.

As an aside, the manual conversion rack is pretty unforgiving. For a car I was planning to be a street cruiser and nothing else I would just leave the Power Steering. I personally love the manual grunt but that's because im looking for maximum feedback from my steering wheel while road racing.

If youre REALLY hell bent on removing something and making it look a little cleaner, I yanked my charcoal canister, Cold Start Assist (I don't drive in the winter, and I run premix), and Cruise Control and it cleaned up the area behind the passenger strut assembly to eventually mount SOMETHING there.