Why does your throttle position switch (TPS) read 99.8%??
At idle it should be 2-5%

Also why are your AFR's at 16:1 at idle? that's extremely lean - no wonder it is backfiring!

I suggest you get this car checked by a reputable tuner before your out $10K for a rebuild!!!

PING Ping BOOM!

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]