uh... really ? it's true that a race program like the Mugen or Spoon would run a stock factory engine of the same series/displacement very rich, but this is anything but either. i won't go into the partial b.s. about the MIL routines. and "soaking the spark plugs" indicates something else like ignition or running DSM injectors on a program designed for stock inj... dark black sooty plugs would be indicative of an otherwise healthy engine running overly-rich.

but when i read that last post of his where he disregarded everybodies advice, i decided it's not worth our time... he needs to learn some basics... geez.

-again, O2 isn't used with Spoon program - swapping is wasted time/effort.
-LS TB is not a bottleneck nor is it incompatible - si tb is wasted time/effort
-VAFC or ECU program designed for a 2.0L will be needed - put some time/effort

but go ahead and ignore our advice and start swapping out parts trying solve your problem... then when you get frustrated with the whole setup, my offer to buy the non-working mess cheap still stands

-=out