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De-coke before and after
Posted: Sat Oct 04, 2014 12:32 pm
by munsen99
Just picked up the beast after having it de-coked and compressions tested.
367bhp before and 410bhp after. Pretty pleased with that as i don't think its been re-mapped.
They also replaced a couple of valves due to corrosion.
Full oil change as well and car sounds and runs amazing.
Re: De-coke before and after
Posted: Sat Oct 04, 2014 1:20 pm
by Rick_RS4
nice, AMD did a great job, what engine mods do you have?
Re: De-coke before and after
Posted: Sat Oct 04, 2014 1:47 pm
by munsen99
No prior mods im aware of but AMD did replace the OEM air filter with a pipercross.
Re: De-coke before and after
Posted: Sat Oct 04, 2014 2:00 pm
by Cerec1
munsen99 wrote:No prior mods im aware of but AMD did replace the OEM air filter with a pipercross.
And it cost the princely sum of ?
Mines never been done as far as I know and showing 76K. Must be due soon
Re: De-coke before and after
Posted: Sat Oct 04, 2014 2:08 pm
by munsen99
Same mileage as mine
De coke was £500... Al in all, cant complain.
Re: De-coke before and after
Posted: Sat Oct 04, 2014 4:35 pm
by harding
In sweden there are almost no workshops experienced enough to do a de-coke. There is one but they take around 3000euros for it
Re: De-coke before and after
Posted: Sat Oct 04, 2014 4:46 pm
by Rw@@dy
How long did it take?
Re: De-coke before and after
Posted: Sat Oct 04, 2014 5:06 pm
by munsen99
Took a week but I had other maintenance work done at the same time. Very happy with the outcome.
Re: De-coke before and after
Posted: Sat Oct 04, 2014 5:34 pm
by C5ARK_RS4
Looking Good
Re: De-coke before and after
Posted: Tue Oct 07, 2014 10:09 am
by RossDagley
Must have had a vacuum leak previously also to recover that much lost power. Those photos don't look TOO bad :p Just be prepared for it to look like that again in 18 months! Car will thank you in other ways too now - smoother running and better mpg.
Re: De-coke before and after
Posted: Tue Oct 07, 2014 10:42 am
by Cerec1
RossDagley wrote:Must have had a vacuum leak previously also to recover that much lost power. Those photos don't look TOO bad :p Just be prepared for it to look like that again in 18 months! Car will thank you in other ways too now - smoother running and better mpg.
I do find it hard to believe that a simple de-coke which will restore flow can produce such massive BHP gains.
I'm new to RS4's and follow all this stuff.
Tel me about the vacuum leaks. How do they get diagnosed? Seem like a regular issue with these cars.
Re: De-coke before and after
Posted: Tue Oct 07, 2014 3:51 pm
by Ben @ AmD Essex
Afternoon All,
Just to confirm, this car did have vac leak issues, the N335 valve (pictured above in the last image) had failed, so the recouped power was due to the decoke and fixing the vac problem.
HTH,
Ben
Re: De-coke before and after
Posted: Tue Oct 07, 2014 4:43 pm
by Baz4
Any ideas what the valve controlled, is it the airbox one?