Pending Carbon Clean Out - Excited

[Thruxton900]

A week or so away from my first carbon clean out, 61k on the clock and I've had the RS4 since around 34k. So I've never really experienced it's full power.

Additionally there will be new plugs, coil packs, fuel pump, JHM intake spacers, oil bypass, fuel filter and of course an oil change.

I'll be topping it off with a new set of shoes...Michelin Pilot Sport 4S.

This spring/summer is gonna be alright!

[2008s4]

I was going to do mine this summer too. It had new coil packs/plugs done less than 2k miles ago when I bought it. I have a set of injectors to send out and have flow matched. Going to do the JHM manifold spacers too and maybe the 034 flapper arm...but work calls and I'm going to be gone in 2 weeks till mid October.

I am looking forward to the difference, I have no documentation on the last time a CC was done so I'm excited to see.

[jdmnomore]

Increase in power or feel will likely be due to the other maintenance items. Carbon clean really does not* increase the feel at all imo. People who say it does are typically grasping for straws.

Car will certainly be much healthier that is for sure. Well maintained RS4s make me smile :)

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[Fourplay]

Increase in power or feel will likely be due to the other maintenance items. Carbon clean really does increase the feel at all imo. People who say it does are typically grasping for straws.

Car will certainly be much healthier that is for sure. Well maintained RS4s make me smile :)

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Carbon clean makes a huge difference, especially if it's never been done, not sure what you're talking about. I made something like 30 more whp after cleaning.

[Seattle squash]

Increase in power or feel will likely be due to the other maintenance items. Carbon clean really does increase the feel at all imo. People who say it does are typically grasping for straws.

Car will certainly be much healthier that is for sure. Well maintained RS4s make me smile

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Well said! And don’t overlook your CC’s and maintenance if you want to enjoy it at full potential, and earn the grin of joy!

Enjoy the post-clean test drive, and see for yourself!


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[jdmnomore]

Carbon clean makes a huge difference, especially if it's never been done, not sure what you're talking about. I made something like 30 more whp after cleaning.

This is debatable. World record fastest stock RS4 quarter time was on a non carbon cleaned car. Whether or not it actually robs power is not a proven fact unless a carbon cleaned car runs better than a 12.7 @ whatever speed it was.

30whp is a crazy gain that would mean your car was running at closer to b6/b7 s4 power levels which is not likely.

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[RAudi Driver]

I didn't realize that the RS4 only had 30 more hp than than an S4.

[jdmnomore]

I said 30whp.. not crank. Nice try though.

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[Fourplay]

This is debatable. World record fastest stock RS4 quarter time was on a non carbon cleaned car. Whether or not it actually robs power is not a proven fact unless a carbon cleaned car runs better than a 12.7 @ whatever speed it was.

30whp is a crazy gain that would mean your car was running at closer to b6/b7 s4 power levels which is not likely.

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https://www.audizine.com/forum/showthread.php/582761-Carbon-Cleaning-Review-with-Dyno-B7-Audi-RS4-by-rs4max-on-QuattroWorld

It absolutely robs power, can’t believe we are even debating this.

[jdmnomore]

We aren't, but others have. Guys who felt it was robbin power posted before after dynos etc. Then a guy took a 75k mile car with no carbon clean ever done to the track and put down a world record pass. Sooo.. I'm just sayin seems pretty overblown.

I am NOT saying that our cars are not hurt by carbon buildup. It is absolutely not great for the engine. But it also is not a power mod and you absolutely are not gaining 30whp by doing just a carbon clean I'm sorry.

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[RAudi Driver]

Maybe not gaining 30 hp but possibly losing 30 hp if not cleaned.

[Fourplay]

We aren't, but others have. Guys who felt it was robbin power posted before after dynos etc. Then a guy took a 75k mile car with no carbon clean ever done to the track and put down a world record pass. Sooo.. I'm just sayin seems pretty overblown.

I am NOT saying that our cars are not hurt by carbon buildup. It is absolutely not great for the engine. But it also is not a power mod and you absolutely are not gaining 30whp by doing just a carbon clean I'm sorry.

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The record was Sakimano's car, and it had 35k miles on it when he set the record.

To be sure, doing a carbon cleaning is not gaining 30hp over the stock rated 414hp, but you sure as hell are getting back up to it.

My last RS4 had 84,xxx miles on it when the carbon cleaning was done and had never had one performed. 30whp is a pretty realistic assessment of the power clawback I had with the cleaning, and here's why (anecdotal, I know, but still).

Pre-cleaning, I went on a mountain drive with some friends. One had a Focus ST and another had a 997 GT3. On the way up, about 60 miles of boring 4 lane highway, I pulled maybe 2 car lengths against the stock Focus ST in a 40-110 pull. It was shocking and a little embarrassing and motivated me to do the cleaning. I also ran the 997 GT3 and got totally destroyed.

A few weeks later, post cleaning, similar environmental conditions and I put bus lengths on the same Focus ST. Later that day, also re-ran the 997 GT3 and was fairly close (lost by maybe 1-2 car lengths), where before I was getting dusted.

So there is a big difference, especially if the car is higher mileage and hasn't had the cleaning done. I will say that some very high mileage cars may benefit more from maintenance (such as new/cleaned injectors) than from the carbon clean itself, but I can only provide 1 data point so far. Once my new RS4 arrives, I'll do some before/after testing to see what I can figure out.

[jdmnomore]

Very good points and for some reason I remembered sakis car having higher miles that's probably my bad. Needless to say cruising along in my RS5 today at around 2k rpms and I got a random misfire.

Could the carbon gods be angry with me? Lol

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[Thruxton900]

Well I certainly didn't want to stir up a hornet's nest, just excited.

I took in all the info posted above and followed the one link attached to the one person's experience before and after a CC, interesting to say the least. This also lead me down a rabbit hole of other posts regarding at wheel horsepower numbers for a stock RS4, to which there seems to be a lot of varying numbers, experiences and opinions...confusing to say the least. What the heck?!

Sad, but true, our car is no longer the fastest kid on the block. However, with that being said, I don't want to drive anything else. My decision to do what I mention in my post came just recently as I was on the fence about keeping my red head or getting something newer like an S4 or S5. It's a bit daunting the money I'll be putting into my RS4 over the next 12 months. As I thought long and hard about it, our car is not only rare but it's looks aren't all that common either. I don't see much on the road today that compares to it's looks. It's still one of the hottest cars out there.

And I get outstanding compliments on it all the time. I've even had two random strangers give me their business cards in the hope that I want to sell it. Heck, the other day I pulled into a parking space next to a brand new Porsche 911 Carrera S. His car was so clean you could eat off it, mine so dirty that it was a sin...the owner of the Porsche went absolute ape shit over my car. Like it was better than his car. I laughed.

Anyway, my point is, I decided that this car is simply not an appliance. It deserves the time and money for it to be kept up and preserved.

[CoreyRS]

Well I certainly didn't want to stir up a hornet's nest, just excited.

I took in all the info posted above and followed the one link attached to the one person's experience before and after a CC, interesting to say the least. This also lead me down a rabbit hole of other posts regarding at wheel horsepower numbers for a stock RS4, to which there seems to be a lot of varying numbers, experiences and opinions...confusing to say the least. What the heck?!

Sad, but true, our car is no longer the fastest kid on the block. However, with that being said, I don't want to drive anything else. My decision to do what I mention in my post came just recently as I was on the fence about keeping my red head or getting something newer like an S4 or S5. It's a bit daunting the money I'll be putting into my RS4 over the next 12 months. As I thought long and hard about it, our car is not only rare but it's looks aren't all that common either. I don't see much on the road today that compares to it's looks. It's still one of the hottest cars out there.

And I get outstanding compliments on it all the time. I've even had two random strangers give me their business cards in the hope that I want to sell it. Heck, the other day I pulled into a parking space next to a brand new Porsche 911 Carrera S. His car was so clean you could eat off it, mine so dirty that it was a sin...the owner of the Porsche went absolute ape shit over my car. Like it was better than his car. I laughed.

Anyway, my point is, I decided that this car is simply not an appliance. It deserves the time and money for it to be kept up and preserved.

Everyone in here is crabby. Enjoy your RS4 with carbon clean and the other goodies...it will feel faster, you will enjoy it.

I've had mine carbon cleaned twice and it was noticeable both times.

[jerobean]

is carbon cleaning something that should be done to all cars?

have an older 1.8t and after reading this I'm curious.

[JQADDINGMACHINE]

is carbon cleaning something that should be done to all cars?

have an older 1.8t and after reading this I'm curious.

Not really, the carbon builds up on direct injection engines because unlike port fuel injection, there is no fuel to clean the top of the valves and intake ports

[jerobean]

oh, cool, learned something today, thanks for the reply!

[WinterRunner]

Increase in power or feel will likely be due to the other maintenance items. Carbon clean really does not* increase the feel at all imo. People who say it does are typically grasping for straws.

Car will certainly be much healthier that is for sure. Well maintained RS4s make me smile :)

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I completely disagree with this. It's well documented to gain anywhere from 15-30whp from a good cleaning.