to4r single injector size
 

hi guys, i hav a to4r setup and it is going in for its post run in map very soon, currently running 357rwhp on stock boost but i want it mapped to 1-1.1bar and was hoping to get some ideas of the correct fuel set up for the target 500+ fwhp?? any experiance or advice would be appreciated! cheers

How are you managing your system? That's something you should note it on the post.

its managed by a apexi power fc...

Are you going to have supplemental fuel pump? Unless you have either supplemental, fuel pot or upgrade your existing pum you don't want to go too big on secondary as it will cause loss of power due to fuel starvation.

And I wish I could calculate but I can't so that's best I can do :/