I apologize if this has been asked, I did search but could not find my exact answer. If i have a Megasquirt DIY PNP Kit, will i still need a fuel pressure regulator? I know you do not need one if you have a standalone, but what about a Plug n Play?

 

Anything that completely replaces your ecu is a standalone.

Read the diy faq and useful saved posts before you make yet another thread.
Joined December and only 11 posts and more than half of them are new threads to topics discussed 1000 times over. C'mon now.

 

You can use one to flow more fuel if you do not buy bigger injectors. But you're better off to just keep the stock FPR and buy injectors and keep the stock fuel pressure.