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      10-30-2016, 09:59 PM   #1
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Super knock?

It's been a while since I checked my codes, but when I did it showed super knock codes 30F0 and 30ED on cylinder's 1 and 4 respectively. I never experienced engine problems or loss of power so I'm not sure if my engine actually experienced the event or if it was caught and prevented beforehand.

I conducted a compression test and all cylinders came back 150ish so I think no engine damage was sustained if it happened.

Not a lot of info on super knock out there. From what I've read it happens during low speed/high load conditions, and when it does occur it can be really bad.

Anyone have experience with this?
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      10-30-2016, 10:37 PM   #2
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I actually had the same code (30ED) when I checked my DTCs the other day. I was lugging my car in boost on the interstate and it felt like it lost all power and shook pretty badly. After that, it was fine. It was pretty hot out that day, i'm not sure if being hot out, and octane quality was the culprit.
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      10-31-2016, 10:16 AM   #3
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What tune are you running?

What fuel is currently in the tank?

How much ethanol is currently showing up on your gauge?

Etc.
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      10-31-2016, 11:06 AM   #4
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How old/what revision on the HPHP and injectors?
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      10-31-2016, 01:46 PM   #5
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Quote:
Originally Posted by FCobra94 View Post
What tune are you running?

What fuel is currently in the tank?

How much ethanol is currently showing up on your gauge?

Etc.
Running an E60 tune, when the event happened I was probably around E50.

Current gauge shows E57.
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      10-31-2016, 01:48 PM   #6
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
How old/what revision on the HPHP and injectors?
HPFP was replaced under warranty in 2012. Injectors are index 11.

I cleared the codes and they have not shown up since. You think it's an injector coding issue?
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      11-15-2016, 09:48 AM   #7
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Quote:
Originally Posted by Bimmer 808 View Post
HPFP was replaced under warranty in 2012. Injectors are index 11.

I cleared the codes and they have not shown up since. You think it's an injector coding issue?
Did you ever get anywhere with this? I got a 30F0 on the way home last night. Once again, interstate speeds, just rolling into the throttle.
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      11-15-2016, 02:02 PM   #8
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Originally Posted by RCOLEMAN545 View Post
Did you ever get anywhere with this? I got a 30F0 on the way home last night. Once again, interstate speeds, just rolling into the throttle.
Never found out what the cause was. Codes never came back. Thinking it probably happened when I was at No Fly Zone doing back to back runs and IATs hitting 180. Plugs and coils are new, oil changes every 3-5K. Engine is still smooth like butter and boosts to 21 psi without issue. Guessing there isn't a lot of experience with this in the community (yet) based on the lack of response. I did add this subject to key words so people can search in the future.

Did you conduct a compression test?
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      11-15-2016, 02:24 PM   #9
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Quote:
Originally Posted by Bimmer 808 View Post
Never found out what the cause was. Codes never came back. Thinking it probably happened when I was at No Fly Zone doing back to back runs and IATs hitting 180. Plugs and coils are new, oil changes every 3-5K. Engine is still smooth like butter and boosts to 21 psi without issue. Guessing there isn't a lot of experience with this in the community (yet) based on the lack of response. I did add this subject to key words so people can search in the future.

Did you conduct a compression test?
Not yet. I am in the middle of cleaning the intake ports, will do a compression test at the same time. I'm thinking mine is a fuel issue. I flashed the 91 octane map and had no issues. The issue came back once I switched back to the 93 map. I normally get gas from the same place, it's 93 with up to 10% ethanol. I think the map is too aggressive for the watered down 93 that is in the pumps this time of the year. I would add a few gallons of E85, but my LPFP is dipping into the high 40s with straight 93. After I replace the fuel pump, and get a few other odds and ends done, I will report back.
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      10-09-2017, 06:23 PM   #10
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How bout since then
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