I currently am running the PFS and factory fuel system. I am getting a mild turbo upgrade an rebuild from Bi-State Customs and want to run 15-16psi on occasion. I know that the PMS cannot control larger injectors properly, even if you keep the same ratio of primary to secondary. My question is about additional injector controllers. I was considering using the haltech unit or possibly Geddy/HKS for supplement fuel. I also kicked around the thought of the home made controller with cold start injectors. Does anyone have any experience wiht a similar set up? What size injectors would be sufficient? Two additional 850's?I reall don't want to get rid of the PMS, and this seems like my only option with the PMS.

 

You should talk with the guys at Rotary Performance (www.rx7.com ), as they recommend this method -- as opposed to almost every other tuner.

Seriously though, it sounds like you would be better off just moving on to the much higher resolution and more capabilities of the PFC.