AUDI S6 V10 - Carbon Clean

[rufmeister]

KungFuPanda said:

Not even at that price? Surely that's a veritable bargain for someone?

Had a few ridiculous offers, I'd rather keep it than give it away.

Cheers for the heads up on this carbon clean, I will give it a wee bit longer then go for it.

[KungFuPanda]

I toyed with selling mine but have decided to keep it and spend a little money on it.

Some twonk grazed the nearside doors and drive off. This was a few months ago and I've not done anything about it ever since. Just dropped it off at the bodyshop to get sorted today followed by an MOT and replacement of a coilpack and spark plug on cylinder 2 which is showing as a misfire. Hopefully, once I've done all that, I'll fall back in love with it.

[aceparts]

Slightly OT, having just gone through some open wallet surgery with my S8 vibrating, I figured I may as well spend a bit on it and keep it because any change will cost £££ and whatever I change it to will be crap in comparison. Yes a V10 is thirsty but so is pretty much every other half comfortable vehicle on the planet!
I had an Amarok 2.0t di that only managed 2 mpg more than my S8!

I'll be down for a decoke soon. Cheap as chips!

[k20erham]

Hi my S8 D3 V10 does the same as My company 3ltr auto ranger on fuel. Vibration on mine took some finding top front wishbone rear bushes not worn out but split all around allowing the arm to move under braking.

[Ej74]

Spoke to Steve
Getting remap of him on my s6
I'll let you chaps know once done

[youngsyr]

Ej74 said:

Spoke to Steve
Getting remap of him on my s6
I'll let you chaps know once done

Did you get it done, and if so, what are your thoughts - worth it?

Seems you can only get about 20 bhp out of it?

[KungFuPanda]

Personally, I'd not bother with a remap on any N/A car. I doubt you'd feel the benefit of an extra 20bhp on a car that already has 435bhp.

[youngsyr]

KungFuPanda said:

Personally, I'd not bother with a remap on any N/A car. I doubt you'd feel the benefit of an extra 20bhp on a car that already has 435bhp.

Normally I'd have doubts about it, but on such a big engine, that is reportedly detuned to give the exact same engine in the S8 better numbers, I was wondering if it's worth a shot?

From the looks of it, getting the engine decoked is a much better bet for more power (or at least obtaining the advertised power!).

[Ej74]

Waited and waited in the end nothing

No contact - gave up in the end

As stated 20bhp is not much but it was offered for cheap so thought why not.

[Pazuzu]

I think the map is mostly to take account of the flaps being removed and optimise rather than just a power thing.

Phil

[KungFuPanda]

Pazuzu, what did you buy after you got rid of the S6?

[youngsyr]

Is there any preventative maintenance to stop the carbon build up - I'm assuming the carbon is coming from the EGR system, can that be disabled or a filter/bypass installed?

Looking around the net, I haven't found anything on it, but it seems an obvious solution to me (don't just treat the symptoms, solve the problem!)?

[k20erham]

Hi No EGR on the V10, the carbon issue is caused by the shocking design of the breather systems, all FSI engines will suffer from inlet coking to some degree, very similar to the EGR issues true, excessive oil in the inlet from the breather, I've done my V10 @80K it was horrendous, not a hard job but messy

[youngsyr]

k20erham said:

Hi No EGR on the V10, the carbon issue is caused by the shocking design of the breather systems, all FSI engines will suffer from inlet coking to some degree, very similar to the EGR issues true, excessive oil in the inlet from the breather, I've done my V10 @80K it was horrendous, not a hard job but messy

Thanks for the info - what about a catch can set up then or even an in line air line filter (see link below)? Surely it's better to limit the amount of oil being recirculated then to have to strip the intake down every few years?

http://www.ebay.co.uk/itm/Spray-Paint-Gun-1-4-BSP-...HQAAOSwZd1Vb5jb

[Ej74]

When i spoke to Steve he stated the following

"Flaps are just left open and unplugged"

[youngsyr]

Ej74 said:

When i spoke to Steve he stated the following

"Flaps are just left open and unplugged"

Anyone know what the purpose of the intake manifold flaps is and why leaving them open frees up power?

I assume it's emissions/efficiency based - choking the engine at lower rpm/load to produce a leaner burn, but that wouldn't explain why leaving them open increases power outside of low load situations?

[k20erham]

Hi the tumble flaps close to the head ports create exactly that, Tumble/swirl effect at lower air speed events, the flaps in the upper part are inlet tract are to lengthen or shorten the inlet tract read variable inlet tract to aid low speed part throttle response going to high speed WOT events couple that to the variable cam timing design there's a lot going on, it does not take much to put the MIL light on either, unplug something or disconnect something and the ECUs don't normally like it.

[mischaRS]

Just collected my RS4 B7 from Stuart.. What a transformation for £350 + VAT !!!

My car had never been touched in 85000 miles, and was chugging away with circa 340BHP

Now its gained nearly a 100-BHP , had the 2 day carbon clean which took twice as long as anticipated and a remap

But they worked overtime to have it finished for me( I live 180 miles away from Kent) and it was ready for collection as promised when I returned with the SW Autos Volvo they lent me to do 300+ miles in !!

I truly cannot believe the difference . a carbon clean + remap

No dispespect to MRC MTM and KC, save yourself a fortune and take your car to SW Autos

Plus blag a drive in Stuarts 800+ BHP V10 RS6... I have driven some very fast cars but this one-for a road car-would take some beating for performance !!

Thanks, SW Autos

[youngsyr]

Just coming back to this topic to spitball a crazy idea I'm trying to visualise to prevent the carbon build up in the first place.

Would it be possible to tap both the plastic pipes between the MAF and the throttle bodies, insert and seal in a valve and then periodically inject an engine safe cleaning fluid (I have a bottle of Seafoam ready to go) whilst the engine is running to keep the backs of the valves clean (or at least cleaner)?

If so, can anyone suggest a suitable valve and a location for the valve to be tapped in?

[barryrs]

I can only see that working if you were injecting straight into the ports like a nitrous kit.

I saw the results of 2 chemical treatments by BG products by removing the inlet and the 2 ports nearest the throttle body were mint; however the ports further away were untouched. These products just take the path of least resistance and wont make it through all ports on the V10 via the throttle body.