You know the word CRAB was an error in spelling THEN it stuck ... 'specially ferr 'da Bumz

MY experience with this situation .. I have had a combo go lean and fat. Lean was when I was doing some major tweaking on a TQ ... I changed the secondary jets and FORGOT to tighten one down. It fell off(and that cut-off 50% of the fuel in the secondaries) ... then the car was popping and banging SURGING big-time.

Later that month I took it to the track..... muffs, OEM dual-snorkel air-cleaner and all..... it would lazy nose-over when you got into the higher revs .... MPH was not what it should be.

I double-stacked the AC element ... problem solved

THAT situation was going way FAT.