Rich on the bottom, lean on the top......

[WSLN 6]

Well, like some other guys on the board, my O2's are around 860 or so on the bottom, and 780 at the top of third.

How can I get around this?
I turn down the fuel pressure, I run too lean on top.

I am running the Thrasher 100 chip, fuel pressure 40psi line off.
Front mount/stock turbo/inj.
Line Loc
340 Walbro hotwired
ET Streets
22psi boost with SMC alky on full, turn on at 12psi, 92 octane
no knock at the top of third.

Best this year(hot day) of 12.9 at 103.8mph, 1.90 60ft
Any ideas?

 

[Kevin Turch]

I think the thrasher needs 45 lbs static