The reason why I am asking is when I last Dyno'd my "Elenor" she ran lean, remember my thread? Anyway, I was trying to rack my brain to figure out why it might be running lean before I send the chip back to Rick, then I remembered something that I either heard or read about the MAF screen. I remember that if the screen was taken out, then it would cause a lean condition, but like I said it could have been a rumor, so I reinstalled it just in case. Well it's just a thought? Any other thoughts?