I just switched to cos3 and cant seem to get on the right track. The start of this tune was a tune that I have been running for months that was pretty good except for high boost. The engine is a stroked 6.0 truck block 6.7 now with l92 heads, vortech supercharger, long tube headers, no cats, 65lb FAST injectors and TR6 plugs. I just need some input on what to work on my A/F is way lean right now. It may be a little while before I get back to you guys as I am on my way to SEMA.