|
|
08-18-2017, 07:04 PM | #1 |
Major General
2769
Rep 6,374
Posts |
The E9X M3 doesn't need carbon cleaning, right?
Because it doesn't have direct injection, a carbon clean isn't that needed and a used car HP's should be very similar to factory?
|
08-18-2017, 10:51 PM | #2 |
5 Star General
50
Rep 281
Posts |
Correct the s65 engine does not have the carbon buildup issues of the direct injected n54.
Now whether the engine has similar hp to factory can also be effected by compression or a number of other wear issues. |
Appreciate
0
|
08-18-2017, 11:36 PM | #3 |
Major General
2769
Rep 6,374
Posts |
Yes true. But usually carbon buildup is the main cause right?
|
Appreciate
0
|
08-19-2017, 06:02 AM | #4 |
Lieutenant General
11650
Rep 12,757
Posts |
We don't have carbon build up.
__________________
Instagram; @roastbeefmike
|
Appreciate
1
Three Pedal Steve891.50 |
08-19-2017, 07:09 AM | #5 |
Major
341
Rep 1,293
Posts |
Agree! Looking down the throttle bodies, my intake valves were spotless. I guess that's one advantage of have port injection and 14 mpg. At a conservative 60mph, that's roughly half a gallon of fuel cleaning each set of valves every hour.
|
Appreciate
0
|
08-19-2017, 12:41 PM | #6 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
Any car will get a little bit of carbon build-up, but it's not nearly to the degree that some direct injection designs are susceptible to. We have two things working in our favor beyond the obvious port-injection benefit: 1. Car requires premium fuel which will have more detergents to slow down and even remove any build up 2. Car uses high-quality synthetic oils which are less likely to form deposits And I suppose a third benefit would be that these motors are often run pretty hard which helps to burn off any deposits. :-) If you want to keep deposits to the lowest levels possible, consider running a PEA-rich fuel injector cleaner in the final full tank of gas BEFORE your next oil change. They're often BOGO at the auto parts stores or available on Amazon subscribe-and-save. Cleaners with documented high PEA levels: 1. Gumout Regane 2. Chevron Techron Concentrate (this is what the BMW-branded cleaner is) 3. Amsoil PI 4. Redline SI-1 Most other "injector cleaners" are crap and use almost no PEA, so stick with the four I just listed. The SAE has proven that PEA in concentrations over 25% does reduce deposits. If in doubt, check the MSDS and look for "polyetheramine" in a level of 25% or higher.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
5
|
08-20-2017, 06:42 AM | #7 |
Lieutenant
325
Rep 489
Posts
Drives: 2011 E90 M3 6MT
Join Date: Mar 2011
Location: Middletown, MD
|
All cars are going to get some carbon buildup. The PCV system routes oil vapor to the intake system. That plus the other things that happen in the intake will cause carbon buildup. But as others have noted, having a fresh stream of solvent being sprayed in there definitely helps keep things clean.
|
Appreciate
0
|
08-20-2017, 02:16 PM | #8 |
Brigadier General
2343
Rep 4,347
Posts |
Carbon will build up eventually on most motors, it just takes a long time on NA non direct injection ones. In the past cars would get carbon build up after 120K miles, the new direct injection motors can have bad build up at 60k or less. So eventually, carbon cleaning would help your motor too, just at much higher miles.
|
Appreciate
0
|
08-20-2017, 02:33 PM | #9 |
Save the Manuals
1739
Rep 2,959
Posts |
Do the occasional Italian tuneup and use good fuel
__________________
2023 G80 6MT, CCBs
2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT |
Appreciate
1
TheMidnightNarwhal2768.50 |
08-20-2017, 02:48 PM | #11 |
Major General
2769
Rep 6,374
Posts |
|
Appreciate
0
|
08-20-2017, 08:32 PM | #12 | |
Major
413
Rep 1,178
Posts |
Quote:
|
|
Appreciate
0
|
08-21-2017, 09:42 AM | #13 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
Soot is a byproduct of combustion, any car's exhaust will have some carbon particulates in it. If it's overly-sooty, that's a sign you're burning oil and/or running rich.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
08-21-2017, 02:24 PM | #14 |
Captain
546
Rep 977
Posts |
Correct. This is not like Audis. No Carbon cleaning service tax for this car.
__________________
Harrop Supercharger, BPM Tune, K/W Coil over kit, Stoptek BBK, Magnaflow exhaust, ear to ear grin everytime I drive... |
Appreciate
0
|
08-21-2017, 07:45 PM | #15 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
Only the first-gen Audi FSI systems had the problem. They've gotten much better in newer iterations but it will still never be as clean as port-injection.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
1
B8bydesign690.00 |
08-21-2017, 08:25 PM | #16 |
Lieutenant General
11650
Rep 12,757
Posts |
the simple answer is no. there is nothing like what you see on the 335 forums or in audi's (i'm not familiar with audi's alleged carbon problem) in m3's. it is not something we deal with.
every car gets deposits, blah blah blah, its not an m3 problem. there are plenty of rod bearing and throttle actuator threads if op is interested in problems or typical issues.
__________________
Instagram; @roastbeefmike
|
Appreciate
1
Three Pedal Steve891.50 |
03-22-2022, 06:10 PM | #18 |
Lord Scrip
1863
Rep 3,050
Posts
Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca
|
If your secondary air system is obstructed you will need to clean the carbon out of the runner. I currently have this issue on bank 1. It happened to me around 220,000 miles.
__________________
|
Appreciate
0
|
03-23-2022, 05:11 AM | #19 |
mTekMods
2248
Rep 2,996
Posts |
most of the naturally aspirated BMWs have this issue, carbon buildup at the cylinder head air injection port.
__________________
2011 Frozen Black/Fox Red E90 M3 650+WHP
G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5 |
Appreciate
0
|
03-23-2022, 04:42 PM | #20 | |
Lord Scrip
1863
Rep 3,050
Posts
Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca
|
Quote:
__________________
|
|
Appreciate
0
|
03-24-2022, 10:20 AM | #21 |
Captain
569
Rep 801
Posts |
The short answer is no, carbon buildup is not an issue.
The longer answer is that lots of things will cause massive drops in power. An example: Old spark plugs are a big deal on the S65. Because they are also used for knock detection, fresh OE plugs are critical to achieving full performance.
__________________
2011.75 E90 M3 | 2006 GMC Sierra LBZ | 2004 X5 3.0i 6MT | 1995 M3 S50B32 | 1990 325is | 1989 M3 S54B32
Hers: 1996 911 Turbo | 1989 325iX |
Appreciate
0
|
03-24-2022, 11:25 AM | #22 |
mTekMods
2248
Rep 2,996
Posts |
Depending on the severity of it you may need to use the S62 passageway cleaning. If you are actually having an issue with air not making it through the cylinder heads expect to have to seperate the heads from the motor.
__________________
2011 Frozen Black/Fox Red E90 M3 650+WHP
G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5 |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|