I am Currently running a 15% reduction pulley with GIAC 15% software. I plan on adding a 2% plus lightweight crank pulley. Will the change cause any problems/issues considering the software I am using? Any thoughts or comments would be greatly appreciated.

 

I have a 15% pulley now along with I/E; I have a 2% crank pulley at home waiting to get it installed at MOTD; I was wondering if there will be any people/dealers doing ECU tuning going on there like GIAC, MTH, Unichip, etc. and also how will performance change if you add more mods like resipamcs plans to do with his 2% or something like a header?