MRC vs. Pippyrips' B7 RS4

Post by **pippyrips** » Sun Mar 29, 2009 10:12 pm

Andy - I've alwys wondered how to show pics like that! They played around with a few things with the car on the road but the majority of the mapping was done on the dyno.

Tweek - probably though the engine is already beded in - its just the inlet manifold and valves that are clean and really should stay that way!

1 thing I forgot to mention in my write up was MRC also gave the car a full service while with them, replacing the oil, filters and plugs. (The filter used was an ITG panel jobbie.)

Post by **Gazzer68** » Sun Mar 29, 2009 10:21 pm

what's the complete exhaust system you are running now?

Post by **Plodwyn** » Sun Mar 29, 2009 11:34 pm

Well done and excellent write up. look forward to the next 1500 miles. perhaps audi technical section shoud be informed!

Post by **Norrs2** » Tue Mar 31, 2009 8:33 am

That's quite an amazing gain - well done MRC! Well done Rob for funding it

If everyone starts getting these mods done to their B7's , there will be some seriously confused M3 V8 drivers out there

Post by **BOGR32** » Tue Mar 31, 2009 11:10 am

Amazing job, but I am more interested in the plan to keep our intake valves from getting in that poor condition. Please let us know, but if my guess is correct, it will have something to do with not recirculating the exhaust gas anymore ....

Post by **LucasRS4** » Tue Mar 31, 2009 11:40 am

We are measuring the build up over time and testing a couple of preventive measures for the long term.

Post by **sonny** » Tue Mar 31, 2009 12:30 pm

BOGR32 wrote:Amazing job, but I am more interested in the plan to keep our intake valves from getting in that poor condition. Please let us know, but if my guess is correct, it will have something to do with not recirculating the exhaust gas anymore ....

I have a GruppeM induction system fitted, the oil crank case breather hose uses its own K&N filter (it is disconnected from the inlet manifold) could this be one of the reasons the head is having this build up?

Thanks for the e-mail Lucas, I must say I am def interested in this, esp if it will find those missing ponies.

Post by **BOGR32** » Tue Mar 31, 2009 12:40 pm

if all this carbon deposits is a FSI trademarket, then I think we are kind of done. I mean, all of today high performance otto cars are with FSI tehnology (and here I include the Lambos and Porsches) so, we will have to buy a new car knowing that will be short on ponnies and that it will get worse with time. Something doesn't seem right here...

Post by **sonny** » Tue Mar 31, 2009 12:43 pm

im sure its not all doom and gloom fella.

Post by **BOGR32** » Tue Mar 31, 2009 12:59 pm

hope so, though how come we got exactly the one model with this problem happening? It must be happening to the Lambos also, the owners just don't know it yet or don't care.

Post by **PetrolDave** » Tue Mar 31, 2009 1:53 pm

BOGR32 wrote:so, we will have to buy a new car knowing that will be short on ponnies and that it will get worse with time. Something doesn't seem right here...

Losing engine power over time has been happening ever since the otto engine was invented.

Did you see the Top Gear last year where they took an old Renault (IIRC) and tried to improve it's lap time? When they got the engine power output measured it was a LONG way down on what it was when new. "Captain Slow" did some basic engine tuning and got much of the loss back - but those gains would also get gradually lost over time.

Post by **pippyrips** » Tue Mar 31, 2009 4:46 pm

duplicate post!

Post by **pippyrips** » Tue Mar 31, 2009 4:47 pm

BOGR32 wrote:if all this carbon deposits is a FSI trademarket, then I think we are kind of done. I mean, all of today high performance otto cars are with FSI tehnology (and here I include the Lambos and Porsches) so, we will have to buy a new car knowing that will be short on ponnies and that it will get worse with time. Something doesn't seem right here...

Carbon build up is only a very small part of the problem, most of of 'our' buildup is down poor oil filtration.

When MRC took my manifold off it dripped liquid oil over the floor and I'm pretty certain caldy's did the same.

I agree with Audi in that carbon buildup (to some degree) will happen but to be dripping oil from the inlet manifold? Come off it!

Btw one other thing I have noticed about my car since the work is that it doesn't blow out blueish smoke on startup and I don't see a plume of smoke in my rear view mirror when I give her the beans and the car behind has their lights on.

My theory on this is as my valves are clean oil isn't seeping into the cylinder head when the engine is off through the open valves.

This will also be happening in the R8s and Q7s.

Post by **P_G** » Wed Apr 01, 2009 12:51 am

That's the bit the concerns me as mine is doing that a lot when not fully warmed up now and it can only be oil in the exhaust gases.

Post by **ArthurPE** » Wed Apr 01, 2009 8:47 pm

SJ-RS4 wrote:
BOGR32 wrote:Amazing job, but I am more interested in the plan to keep our intake valves from getting in that poor condition. Please let us know, but if my guess is correct, it will have something to do with not recirculating the exhaust gas anymore ....
I have a GruppeM induction system fitted, the oil crank case breather hose uses its own K&N filter (it is disconnected from the inlet manifold) could this be one of the reasons the head is having this build up?

Thanks for the e-mail Lucas, I must say I am def interested in this, esp if it will find those missing ponies.

this is very interesting:
the output line from the cyclone seperator to the intake manifold is disconnected and has a small filter on it?
or the lines from the valve covers are disconnected?

this would seem to indicate most oil that gets into the manifold must come around the rings...not thru the cyclone

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