[marcvtec]

One thing I highly recommend is that after every 50,000km on your car get your valves cleaned.
Thanks to Dzenno"s recomodation Ivo @ columbus auto did a fantastic job on the car.

Things I noticed right away with 100K on my 2007 E92 FBO Tuned car.
- idle is now super smooth, before there was always hiccups, a little up down rpm crap fluctuation, etc. all gone now.
- power - the car pulls faster for sure, revs better, I wish I did a before and after dyno. but I can tell after 5 years of driving the same shit around.

Personally I will probably do it every 30K from now on if I keep the car long enough.
Cheers

[Yvette]

how much did it run you

[marcvtec]

$300
6 hours of labour time basically

[Tzu]

It fixed my idle for about 2 weeks, then studders came back. I think the best preventative maintenance is spraying meth. If you saw Mr. 5's valves, they were pretty damn good looking compared to mine and many others. If mine looked like that, I wouldnt even bother cleaning.

[marcvtec]

Originally Posted by Tzu

It fixed my idle for about 2 weeks, then studders came back. I think the best preventative maintenance is spraying meth. If you saw Mr. 5's valves, they were pretty damn good looking compared to mine and many others. If mine looked like that, I wouldnt even bother cleaning.

Good idea, I forgot I should get meth !!!!!!!!
This will make me smile for awhile

[Irishace]

Meth is such a good thing for the N54, I really feel that its a mandatory item.

[99three]

Running meth would be good preventative maintenance. I have an idea...what about adding some valve cleaner in the meth/water solution. This homemade brew could be the solution to the DI woes. I may be doing this since I only have 40K on the clock and will open it up once I hit 55-60K to see if this theory works. Or better yet, how about someone that already had the valves cleaned try it for a few thousand K?

[Dr. G]

Originally Posted by Irishace

Meth is such a good thing for the N54, I really feel that its a mandatory item.

I've been a meth advocate for a long time More people need to start jumping ship.

I've been pumping it to everyone I know like I'm a meth dealer haha.

[Dr. G]

Originally Posted by 99three

Running meth would be good preventative maintenance. I have an idea...what about adding some valve cleaner in the meth/water solution. This homemade brew could be the solution to the DI woes. I may be doing this since I only have 40K on the clock and will open it up once I hit 55-60K to see if this theory works. Or better yet, how about someone that already had the valves cleaned try it for a few thousand K?

Hmm, that's an interesting idea, not too sure about the technicalities.

I do know though that even with meth, people still experienced a lot of buildup, just a bit less.

[Glim]

Read an interesting article about a 2008 Audi RS4 (DI Engine) with a similar issue where he ran it on a Dyno before and after cleaning, saw a 41 AWHP gain after cleaning, after 10,000 miles the power output was reduced 5%, he now gets his engine cleaned yearly for $1,200:

http://www.autoobserver.com/2011/06/direct-injection-fouls-some-early-adopters.html


Direct Injection:

The HPFP sends fuel to the fuel injectors, fuel injectors are in the cylenders, because they are in the cylenders it prevents the valves and intake from getting cleaned by fuel. The valves and ports get caked and clogged with carbon, the carbon can flake off and burn holes in the catalytic converter.

[munich2007]

what is meth? sorry for the newb question. some details and where to get it etc would be great. thanks

[marcvtec]

Originally Posted by gsandha99

what is meth? sorry for the newb question. some details and where to get it etc would be great. thanks

Just search for meth kits

[Andy1991]

Originally Posted by marcvtec

One thing I highly recommend is that after every 50,000km on your car get your valves cleaned.
Thanks to Dzenno"s recomodation Ivo @ columbus auto did a fantastic job on the car.

Things I noticed right away with 100K on my 2007 E92 FBO Tuned car.
- idle is now super smooth, before there was always hiccups, a little up down rpm crap fluctuation, etc. all gone now.
- power - the car pulls faster for sure, revs better, I wish I did a before and after dyno. but I can tell after 5 years of driving the same shit around.

Personally I will probably do it every 30K from now on if I keep the car long enough.
Cheers

Could you please tell me how to contact Ivo@columbus?

How is your carbon build up on your car? any pics?

thanks

[Dr. G]

Originally Posted by Andy1991

Could you please tell me how to contact Ivo@columbus?

How is your carbon build up on your car? any pics?

thanks

PM'ed you his info

[Fastfurious]

What about those with a 328? What would you use to clean the valves?

[Volasko]

Originally Posted by Fastfurious

What about those with a 328? What would you use to clean the valves?

I second that and where did you get the work done, a dealer?

[munich2007]

yes…would someone like Nixon in vancouver be good for valve cleaning??

[JunkStory]

Originally Posted by Volasko

I second that and where did you get the work done, a dealer?

A dealer can do it (I know for 335i they do it).. it's called walnut blasting and it costs $600 in the US BMW dealers. Wondering how much it costs to do it here. I will probably do it at around 160,000km or when the valves are so dirty that driveability becomes affected, which ever comes first.

[Glim]

Originally Posted by Fastfurious

What about those with a 328? What would you use to clean the valves?

Your 328 is fine, is has the N52 engine

335's use the N54 engine and will have carbon build up as they are DI