When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Since my last tune I have several times had lean codes pop up. I decided to have it checked and sure enough we found that the air bridge was cracked, thereby triggering the leanness.
I thought about replacing the air bridge with a nice CF decorative one but if i am going to do a blower soon then that would be a waste. So, we just resealed the crack in the air bridge and she's going back on the dyno today. This may explain why I was on the short side of the power range given the parts installed. I might have found the reason and some newfound free HP as well.