shkrelz

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TexasBenzBandit

Are you certain the TUNE caused this? How did you come to that conclusion? Just curious.

CarHopper

Has been documented with a handful w212's that I've seen. More power = this result. Not going to happen with every motor, but not all mechanical things are made equally. Especially hand built.

timm206

Were you running stock plugs? Improperly indexed plugs could melt the piston or running lean.

Classic777

Damn that sucks man, you can get used engine for~$10,000. This is exactly why I don’t want to get tune

shkrelz

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chiromikey

These cars have many documented injector failures, many intermittent that don’t through immediate codes. That’s what I would investigate before blaming a reputable tune (assuming that you used one).

WANTED!!

No. Just no.


It sucks that you had a catastrophic failure, but blaming the tune after 10k miles makes zero sense. There are far too many mechanical variables to rule out before blaming the magic horsepower box. A few of those variables are documented to cause this kind of failure under bone stock conditions. Right above your post is an image of the exact damage you have caused by one of those variables. You mentioned stock plug with stock gap. But if the plug were not properly indexed, same result.

Rule out the mechanical possibilities before blaming the 1s and 0s.




There are more than a few tuned cars here that have tunes with more miles than you without having failures.

PeterUbers

Yep three reported injector failures without CEL on the Forum alone including the m156 engine

CarHopper

I mean it is recommended to run step colder plugs but that shouldn't be what causes a failure as bad as yours.

At the end of the day you should chalk it up to bad luck and the increase in power.

CarHopper

m156 pre or post 2012? It really shouldn't matter, and comparing 156 to 157 is apples and oranges. Just surprised the amount of catastrophic failures coming from plugs

jvakos

Sorry to hear you had this happen.

Curious - what dyno numbers did you show when you got the tune and downpipes? Seems for a tune and downpipes most m157 / E63S tuners are doing around 640whp (up or down) so if you were above that then maybe the tune was too aggressive.

But you said your had 10k miles on the tune with no issues (no misfires or codes????) so would assume a overly aggressive tune would have thrown misfire codes immediately or certainly within the first 1000 miles.

Not sure what tuned HP level above the stock HP rating starts to cause engine stress, but l I’ve heard of a few MB Dealers offering 3rd party tunes that they will warranty for the m157/w212 E63 but the peak crank HP has been around 675 HP so perhaps anything above that level is excessively hard on the motor if driven hard consistently.

With that said, it seems fairly rare to hear about any m157 motor issues on stock E63’s as all the reported issues people talk about are tune related (of course there are also numerous tuned E63 / m14”57 owners who’ve had no issues either so sometimes it’s just bad luck)

PeterUbers

Are you making a point?

try m3

Did your car ever misfire and go into limp mode previously during the 10k miles tuned? If your plugs were not properly indexed your car would be misfiring and run like crap. Also I had my high pressure fuel pumps go out but car would fuel cut and go into limp mode to protect the motor. Also it seems unlikely that you would have 6 injectors go at once and cause damage to 6 cylinders. I'm guessing your car had a pre existing issue prior to you purchasing it or a really bad tune but I doubt the tune was the issue it may have just sped up the engine failure.

jvakos

Now I remember this one..... Not saying anything more

https://mbworld.org/forums/w212-amg/...ml#post7582100

try m3

Also with cylinder scoring like that I'm sure your car was burning a ton of oil prior to it completely letting go. Sorry to see this happen to your car OP check ebay theres some good deals on used motors and long blocks ($8-10k).

Cylinder Head

iTrader: (1)

Daddy’s definitely putting the kid in time out.

shkrelz

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Classic777

Definitely the tune. These engines are designed to have up to 583chp (s63). If you add more power of course you add more stress to the engine components. Raising the risk of failure

timm206

600 whp on mustang dyno is no joke, you should of invested in 1 step colder plugs and a meth kit. But not tune for meth just let it keep tepms down or AMS cooling upgrade. Misfires at WOT are bad. Good luck next time.

BlownV8

+1

jvakos

what did the engine rebuild cost you? a used m157 motor can be found for 10-15k on ebay and would think the motor swap might have been cheaper, but good that you're fixed and on the road again.

mrmotoguzzi00

you aware mustang dyno's usually report lower numbers than dynojet.... so that 600 may have been higher if on a dynojet...

5soko

Again,Sorry to hear brother, i wish we would have met up sooner to get a datalog of your car to have some more concrete info.

This is no question a tuning failure, that was pushed too aggressive on pump gas... It is pretty clear cut, but of course no tuner is going to own up to it. So ahead we go.
Multiple bent connecting rods, melted piston, and another scored cylinder, its pretty clear...

Most tuners in the M157 market use the oem boost by load route for this engines to control boost and now that the weather is getting hot, the boost is also going up to meet the load demand.. (As in the OP/s situation, it is only beginning to get a bit warmer here in the east coast which means more boost)
The aggressive boost and ign advance start to slowly degrade your engine until the inevitable happens. High miles, High boost and high timing, we will see more of this with tuners who pushing and relying on the Knock sensors to retard ign to save it, slowly killing it, or pushing too much boost on pump gas.

I have seen it on a few fellow tuned M157's, high boost, using stock oem ign advance timing!
I have a datalog sitting in my laptop of a fellow members tuned car, the car is consistently pulling timing, and consistently having timing drop outs.. Too much boost for pump gas and falling in love with timing seems to be a issue in the M157 world. I wont name the tuner, but if anyone would like i can DM them the log or post in a new thread.

Glad you are back up and running brotha! And a good warning to most, be careful with the tuner you use.

PeterUbers

I had AMS datalog my 63 for this very reason - excellent post. I had one CEL and I wanted this resolved