Well I had someone give me a brand new in a box Vortech FMU the ratio is a little high being a 12.1 ratio but it works go into boost fuel pressure raises up nicely...saw nice Air fuels in the 11's so I just to get im thinking an 8.1 ratio disc...OR can I use the adjustable bleeder on the vortech from the ATI fmu I have that didn't work...???

 

11's a/f sounds good to me ...

 

Yes they do problem is the more boost i get into the higher the fuel pressure will go due to the wrong FMU disc..thats why im thinking i might need an 8-1 ratio disc instead on the 12-1 disc or can i use the adjustable bleeder from the ATI on the vortech FMU?