spyderman

On my 73 911t i have modified the motor with 2.7 rs pistons, intake ports ported out to 35mm, and some oil system updates. everything else is stock, incleding the stock 2.4 cis injection system. I had some hessitation problems and did some tests and found out my throttle valve for the control pressure is bad.(i found this using the bosch gague and the correct procedure). what i want to know is if i should just replace it. or should i install the vacuum controlled warm up regulator, and toss the old one and the throttle valve. any help would be appreciated (unless you think I should just install webers)

Thanks