Quoting joel & viola <yesous2 at comcast.net>: > K, what about boosted cars like mines?? > I brought a AEM wideband, so is 12.5 > best for boosted vehicles? Mike??? Joel Above 12.0 and you're likely to shoot rods out the block and pistons through the hood. Around 11.5 is pretty safe. 11.0 is very safe.