Hi all. I am wanting to raise my fuel pressure. so do i need to mod both tb's or just the rear. Is it just as easy as in the tech article listed here, or do the xfire units require different steps. Thanks in advance

 

One of the two I beleve is not a FPR but an actuator(spell?). Its purpose is to smooth out the flow or something similar. So you leave that one alone. Or run the TB's parallel and replumb. In that case remove actuator and block off with a plate.

Fuel pressure shouold be 11-13 lbs. None higher.

 

done easy peasy. my pressure did not go up so i pulled the tank to swap pumps and found the rubber hose turned to goo. new hose and all is well.
I didnt think it would ever idle.