Carbon clean, Before and after power output?

[kmpowell]

How much [ball-park] does the carbon/coke clean procedure cost?

[andymc]

356ps 422nm
then MRC Carbon Clean and replacement panel Filter
412ps 466nm

[andymc]

How much [ball-park] does the carbon/coke clean procedure cost?

MRC pricing is on their website:

http://www.mrctuning.com/index.php?opti ... =59#engine

[OskiRs4]

Just looked at your other thread,and you got 366....how old is the engine oil? are you running super unleaded? Who done the original re map, ie is it any good? Remember dynos are a guide you could go on half a dozen different ones on the same day and see 100hp difference...

Hi it was Recently serviced when I got it,always ran on super since I have had it, it pulls very well and is alot smoother now,

They could not identify last map, put put their stage 2 on there, Hopefully I will see some a big increase once cleaned, 366 is a bit low considering it has stage 2 map miltek, high flow cats etc.

[Jonny]

Hi:)

Has anyone here suffered with carbon build up (no doubt there is loads) and had the power logged before and after clean?

thanks

Unfortunately, Ive not got access to a Rolling Road, I measured performance with timing the car, 3rd gear pull from 3-8k rpm. before the clean it was doing it around 10.5 seconds, now 8.8. I personally think its a good job to do on your car if you've just took ownwership, as you have no idea how its been driven, what fuels used, servicing etc. Also, just for peace of mind and not having it stewing in your head.

[scaghead]

Hi:)

Has anyone here suffered with carbon build up (no doubt there is loads) and had the power logged before and after clean?

thanks

Unfortunately, Ive not got access to a Rolling Road, I measured performance with timing the car, 3rd gear pull from 3-8k rpm. before the clean it was doing it around 10.5 seconds, now 8.8. I personally think its a good job to do on your car if you've just took ownwership, as you have no idea how its been driven, what fuels used, servicing etc. Also, just for peace of mind and not having it stewing in your head.

1.7 secs from a de-coke not sure about that... seems a hell of a lot...i agree it is a good job to do and gives you peace of mind....my de-coke gave me an extra 21hp...

[scaghead]

Just looked at your other thread,and you got 366....how old is the engine oil? are you running super unleaded? Who done the original re map, ie is it any good? Remember dynos are a guide you could go on half a dozen different ones on the same day and see 100hp difference...

Think a 100hp difference is a bit exaggerated ... Would need some seriously fudged af correction and some bad strapping techniques to get + or - a 100hp !

maybe a little tongue in cheek fella, but the main point being you can get silly variations when you use different rollers..

[ArthurPE]

Hi:)

Has anyone here suffered with carbon build up (no doubt there is loads) and had the power logged before and after clean?

thanks

Unfortunately, Ive not got access to a Rolling Road, I measured performance with timing the car, 3rd gear pull from 3-8k rpm. before the clean it was doing it around 10.5 seconds, now 8.8. I personally think its a good job to do on your car if you've just took ownwership, as you have no idea how its been driven, what fuels used, servicing etc. Also, just for peace of mind and not having it stewing in your head.

1.7 secs from a de-coke not sure about that... seems a hell of a lot...i agree it is a good job to do and gives you peace of mind....my de-coke gave me an extra 21hp...

as far as the 3-8k test, unless you have 10 or so runs under similar conditions, tossing the the fastest and slowest and averaging then the number may not be valid
and a 16% decrease (1.7/10.5) seems like a lot, especially since carbon only impacts >5500 or 50% of the range (some dynos have shown only above 6500 or 30% of the range)
that would equate to over 100 HP!

[Jonny]

Totally agree with you... maybe i cured a vac leak whilst doing the job, as i extended the check valve from under th IM to out front and replaced with a new one. Also, sorry a little off topic, where the vac line comes off the double 'T' connection around to the left side of the engine, my cars line has been split at a connector and plugged? does this line only go to the exhaust valves? I have a non valved Miltek, so i can only assume this is the reason, correct???

[jobbys]

Picked mine up today after MRC Carbon Clean (cost £900) and now measured at 413PS and 450Nm. Previously had it dynoed by MRC back in July when it came in at 370PS & 427Nm. See plots below.

Therefore uplifts of approx 10% power (43PS), and 5% (23Nm) torque, giving a cost per horse of £21. No other engine/exhaust etc work has been done, so increase all attributable to the clean.

What does the difference feel like? Well it's really hard to stop the psychological stuff coming into play. Yes, immediately it feels faster in terms of acceleration. But then again over the last two days I've been driving a courtesy car in the form of lowly Chevy Kalos. So the mind starts playing tricks and initially I think the gear change is smoother and handling maybe a little better. It's such a weirdly subjective thing, but overall I'm happy.

Anyways that's my experience, your mileage may vary.

[MikeFish]

Some of that may also be attributable to the change in temperatures between May and July. The temp shown on the plot was 7 degrees higher on your previous run.

[sonny]

£900 for just a carbon clean...<beep> me.

[sakimano]

Totally agree with you... maybe i cured a vac leak whilst doing the job, as i extended the check valve from under th IM to out front and replaced with a new one. Also, sorry a little off topic, where the vac line comes off the double 'T' connection around to the left side of the engine, my cars line has been split at a connector and plugged? does this line only go to the exhaust valves? I have a non valved Miltek, so i can only assume this is the reason, correct???

No offense but why say you improved your time when doing a clean without mentioning that? The thread is about carbon clean delta...not random other problem delta that was addressed during a carbon clean.

Had Arthur not questioned it, noobs and b5/b8 owners would see your post and deduce that carbon destroys performance, and nag us relentlessly.

The rs4 has suffered enough trolling without it being fed by misinformation.

Here is the op and then your response...

Hi:)

Has anyone here suffered with carbon build up (no doubt there is loads) and had the power logged before and after clean?

thanks

Unfortunately, Ive not got access to a Rolling Road, I measured performance with timing the car, 3rd gear pull from 3-8k rpm. before the clean it was doing it around 10.5 seconds, now 8.8. I personally think its a good job to do on your car if you've just took ownwership, as you have no idea how its been driven, what fuels used, servicing etc. Also, just for peace of mind and not having it stewing in your head.

[TimDogg]

+1 sak

[watts6087]

Hi:)

Has anyone here suffered with carbon build up (no doubt there is loads) and had the power logged before and after clean?

thanks

Yeah just had mine done at Amd Essex! It was running 360! Now it's 434bhp