3.3TT Check engine and bog down

[NoKia]

WOT on map2 with 94 which I’ve been running for a good year no issues and it’s now throwing a code. Tried to accelerate (lightly) feels like it’s bogged down. Idle it feels like it’s going to stall. Drive and switch to neutral and it coasts normal idle feels fine. Shut car off and turn it back on and it goes away. Trying to read the code with jb4 and it shows nothing even when the dash light is on. Switch the tune to 0 WOT seems fine. Switch to 1/2 WOT and it codes. Anything noteworthy in it? The only thing I can think of is I filled up at a different station than usual - could it be the gas?

I’ve attached a log.

 

[Terry@BMS]

Try reading with another OBDII reader, maybe its a non-ECU code if the JB4 isn't reading it?

 

[NoKia]

Figured it out- ended up throwing p0306. I toasted at least one denso plug. It came out and seemed ok until I went to check the gap and the tip disintegrated. Didn’t have them in there all that long but I’m also a spirited driver. I’ve got #6 out and replacing them all as we speak.

 

[Terry@BMS]

Strange! If you're having issues with the Denso then try HKS, and be sure to log it to check timing corrections to ensure those are minimized on the tuning.

 

[NoKia]

Thanks. Ya so every single plug was like dust. 10-12,000km on them. I put denso back in let’s hope they hold

 

[ChaneRZ]

I’d go with HKS next time.