Posted on August 12, 2016 May 29, 2018 by FiTech EFI — 11 CommentsHow much fuel pressure does the FiTech EFI run? Our internal regulator is preset at 58 psi and is non-adjustable. It is built into the throttle body and is non-adjustable to keep pressures consistent. Post navigationPrevious post: How many wires do I need to connect to start my car?Next post: If I am making 500 HP, can I use the 8 injector system on my engine? 11 comments on “How much fuel pressure does the FiTech EFI run?” Ben Kennedy November 12, 2016 I have a 89 Camaro RS with a TBI will I need to change my fuel pump? Bryce - FiTech Tech Pro November 16, 2016 TBI fuel pumps will NOT produce enough fuel pressure to work with our systems which operate at 58 psi. Ben Kennedy November 12, 2016 I’m putting a 350 ci in my 89 Camaro RS non fuel injection a older block. What system do you recommend? Bryce - FiTech Tech Pro November 16, 2016 All of our systems are broken down by horsepower ranges. As long as your engine fits in that range you can use that system. See our home page for a chart of our systems. Ben November 15, 2016 If running a turbo set up and using a boost referenced fuel pressure regulator, does it overide the preset built in regulator? Or do u have to modifu Bryce - FiTech Tech Pro November 16, 2016 If you are using your own regulator you will block the return of the FiTech regulator rendering it nonoperational. Ben November 16, 2016 Thanx bryce confirmed what i was assuming appreciate it! neil kemp December 9, 2016 30 psi pressure on my gauge and when im driving im getting pinging when i put the boot into it. is it a lack of fuel pressure or a timing issue. Bryce - FiTech Tech Pro December 10, 2016 your pressure is low and your timing can also be off. I would look into you pressure first though. Frank P March 18, 2017 Will my in tank Chevrolet TPI pump provide adequate pressure and flow? Bryce - FiTech Tech Pro March 20, 2017 Without knowing anything about your engine I would have to say if you are making more than 400hp or are using anything other than the Go Street the factory pump will NOT work.