ASPX Wide Band

AEM all the way, I also had one on my srt4 with a big turbo and engine work, always worked awesome, just know if you ever run race fuel to pull the sensor and clean it off with brake or carb cleaner, the lead builds up and causes them to not read as accurately, but not far off. I have some for my race car now which will be twin turbo later, but I'll also be using them on my 67 dart that's also twin turbo.