[Bmweth24]

Bootmod3 sent me this when I sent them my log about 2 knocks.

"Looks like you have misfires up top near redline. AFR is super unstable and STFT (fuel trims) too.

Also, are you at high elevation?

Did you gap your spark plugs?"

I'm going to go ahead and change my sparks and make sure there gapped right and install a PR ignition kit.

Also used a liqui moly speed tec gasoline additive if that has to do with anything.

2014 m sport 435i rwd fbo upgraded turbo
VRSF Chargepipe, vrsf race fmic, and hi flow downpipe
BMS aluminum elite intake
Stage 2H 93 bootmod3
ngk Cold spark plugs
oem ignition coils
Vargas stage 1 upgraded turbo
92500 miles
xHP stage 3 transmission tune

[BMWILUVU]

Originally Posted by n55up

Bootmod3 sent me this when I sent them my log about 2 knocks.

"Looks like you have misfires up top near redline. AFR is super unstable and STFT (fuel trims) too.

Also, are you at high elevation?

Did you gap your spark plugs?"

I'm going to go ahead and change my sparks and make sure there gapped right and install a PR ignition kit.

Also used a liqui moly speed tec gasoline additive if that has to do with anything.

2014 m sport 435i rwd fbo upgraded turbo
VRSF Chargepipe, vrsf race fmic, and hi flow downpipe
BMS aluminum elite intake
Stage 2H 93 bootmod3
ngk Cold spark plugs
oem ignition coils
Vargas stage 1 upgraded turbo
92500 miles
xHP stage 3 transmission tune

Is that an octane booster and what is the quality of gas in your area? I would back off and run a lower octane map and see if you see improvement or go back to stage 1.

[thejeremyman9]

Why are you cross posting the same thread back in general? https://f30.bimmerpost.com/forums/sh....php?t=1866347

You'll get better responses back in the N55 section... and we need the datalog as i said there.