Wanted some input. Not logging AFRs, but according to AEM UEGO between 11.6-12.8:1 when this happens. Only happens during sustained WOT pulls and only in 5th. Two logs attached. Log 1 is from last week, 2 is from today. Similar circumstances/temps.

Wondering if this is what bad/dying fuel pump relay...

Cobb OTS Stage 3 v403. Here comes the flames...
- MAP downpipe
- MAP testpipe
- MAP single
- AEM intake (properly scaled)
- Cobb EBCS

Log 1:
https://drive.google.com/file/d/0B42...ew?usp=sharing

Log 2:
https://drive.google.com/file/d/0B42...ew?usp=sharing

Planning on getting a ProTune soon, just hoping to get E85 setup before hand.

Also, I swapped a green relay in for the fuel pump.

 

My car does the same thing. Roll into 5th at a low rpm and the knock gets crazy(logged 10 counts). 5th gear and ots maps must not like eachother. I just make sure to down shift to 4th before getting on it. When I come into 5th from 4th (past 5k rpm) I don't get any knock.

 

Well, for starters, NEVER go WOT in 5th below 4k RPM or so. Lots of stories on the forums about folks putting a rod through the block doing that.

I was having an issue at WOT with knock over 6k or so. I am now ProTuned and no knock.

 

Drop a line to Chet Rickerman @ Rickerman Tuning, from what i hear hes great @ figuring things out and he E-Tunes but with Evoscan/Ecuflash.