A ton of variables, so I would run through everything to pinpoint the problem. If you haven't done so already, check the intake side of the equation for anything coming loose or a dirt filter. I found leaves in the intake the first time I cleaned it out. It might even be something as simple as a bad batch of gas. It just seems odd that an CBE alone would throw off the ECU that much.
Are you trying to lauch the car off the line...and if so @ what rpm?
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[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R]
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