I hope I have this post on the right forum. I have a fully forged 408 tfs 215, 247/251 623 111 lsa, fast 90/90 my fuel trims will be at 10% thrn jump to 20% back and forth. It was tuned at rpm in DEL. WHY I don't have any vacuum leaks

 

Did you change injectors when you did the intake/cam swap?? Either way you look at it, the engine needs to be tuned before you run it, could cause damage if it isn't tuned beforehand.

 

Its tuned by rpm (Race proven motorsports) and has 42lbs injectors. I smoke tested it and went over every vacuum port. Ie booster pcv intake ect ect