Not sure how I missed this, but it's great to see another C4 on here!! I've got a built '94 S4 with cosmetic/body issues and a stock '95 S6 with good bones, so I will be Frankenstein-ing them into one complete (presumably superior) car, which will be documented on this forum when that time comes. I'm sticking with S4 bumpers, hood, lights, and trim, so I'm not sure if you're still looking for S6-specific stuff, but I'll have it. I do also have a complete 8.5/10 black Euro S6 cloth interior I'll be parting with but it's very rare in the US and you know what that means ($$$$). I realize you're not exactly trying to build a show car here.
You asked for input, so here is mine: keep the stuff for your build, at least for now. You can always sell parts down the road if your plans change, but it's very difficult to un-sell parts. If you're not hurting for money, sit on it for a while until you're sure what you want to tackle. The car will be ready whenever you are.
Also, that clogged sunroof drain you mentioned can kill an ECU, so that's obviously a biggie, but inspect your rain tray area as well. There are drains there that can/do clog and need to be cleared out. Water in the passenger footwell could also be a heater core... hopefully not.
These cars are basically deathproof when properly cared for and honestly don't ask for much, it's just that parts can be hard to locate or pricey if/when you do have problems. However, the glorious sound of an uncorked 5-cylinder turbo, the oddball/rarity factor, simple understated design, and head-scratching looks you get from people make it all worth it, in my opinion. My 2002 S4 is full-tilt, 600+hp, TE-37s, Ohlins, Porsche brakes, Sporster CS's, and makes a hell of a lot of noise... 99% of people barely glance at it. In the '94 S4, I get comments, questions, compliments, strange looks, parking lot window shoppers, and cellphone paparazzi just about everywhere I go.
Maybe yours isn't where you want it just yet, but they make for great low-maintenance daily cruisers and road trip cars when you catch up with all the stuff the last guy missed. You definitely seem like you're on the right track so far. These are some of the last "modern" cars that you can still work on with basic hand tools and jackstands in your driveway for most jobs, and probably the last Audi ever where you can pop the hood and and access 95% of the components without removing half the engine or front clip. Around 310whp is the sweet spot between stock bottom-end performance and reliability, but inspect/replace/repair mounts and other tired old rubber bits in the drivetrain first. Upgrade to the R8 coils and conversion harness when you do the rest of the turbo/fueling stuff and she'll run like a top. That's my 2 cents.
Subscribed and good luck!
You asked for input, so here is mine: keep the stuff for your build, at least for now. You can always sell parts down the road if your plans change, but it's very difficult to un-sell parts. If you're not hurting for money, sit on it for a while until you're sure what you want to tackle. The car will be ready whenever you are.
Also, that clogged sunroof drain you mentioned can kill an ECU, so that's obviously a biggie, but inspect your rain tray area as well. There are drains there that can/do clog and need to be cleared out. Water in the passenger footwell could also be a heater core... hopefully not.
These cars are basically deathproof when properly cared for and honestly don't ask for much, it's just that parts can be hard to locate or pricey if/when you do have problems. However, the glorious sound of an uncorked 5-cylinder turbo, the oddball/rarity factor, simple understated design, and head-scratching looks you get from people make it all worth it, in my opinion. My 2002 S4 is full-tilt, 600+hp, TE-37s, Ohlins, Porsche brakes, Sporster CS's, and makes a hell of a lot of noise... 99% of people barely glance at it. In the '94 S4, I get comments, questions, compliments, strange looks, parking lot window shoppers, and cellphone paparazzi just about everywhere I go.
Maybe yours isn't where you want it just yet, but they make for great low-maintenance daily cruisers and road trip cars when you catch up with all the stuff the last guy missed. You definitely seem like you're on the right track so far. These are some of the last "modern" cars that you can still work on with basic hand tools and jackstands in your driveway for most jobs, and probably the last Audi ever where you can pop the hood and and access 95% of the components without removing half the engine or front clip. Around 310whp is the sweet spot between stock bottom-end performance and reliability, but inspect/replace/repair mounts and other tired old rubber bits in the drivetrain first. Upgrade to the R8 coils and conversion harness when you do the rest of the turbo/fueling stuff and she'll run like a top. That's my 2 cents.
Subscribed and good luck!
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