Your take on rising rate fuel pressure regulators

[jaywood]

What's your take on RRFPR's?

[Dj Buttchug]

its a cheap way to slam more fuel through injectors that are too small.

[jaywood]

Agreed. Do I need one?

T3 turbo. Chip. Wideband. ~8lbs boost. 30lb injectors. M20.

[Dj Buttchug]

mmm you may be able to get away with stock fuel pressure because of the bigger injectors.

maybe someone with rrfpr experience can chime in. might want to consider a better fuel pump as well... tre 255

[trackjunkie21]

I'd go on M42 club and contact one member who only works with rrfpr's, he is really good and makes special chips for them aswell

[jaywood]

mmm you may be able to get away with stock fuel pressure because of the bigger injectors.

maybe someone with rrfpr experience can chime in. might want to consider a better fuel pump as well... tre 255

That's kinda what I was thinking too. I know the injectors are big enough for my power goals.

[Dj Buttchug]

run stock stock fpr and rail with the green tops and tre 255lph fuel pump and youll be fine.

[trackjunkie21]

run stock stock fpr and rail with the green tops and tre 255lph fuel pump and youll be fine.

Lol and run pig rich at everything other than full throttle? That isn't very smart at all.

[Dj Buttchug]

not if he chips it...

[trackjunkie21]

not if he chips it...

Guess I missed that part.

[Dj Buttchug]

but ya truth stock motronic with 30lb injectors sucks a fatty. it almost doesnt even run.

[jaywood]

Stock motronic can handle 30lbers

[browntown]

So this is rather tangential, but apparently it makes it harder to tune megasquirt with rrfpr. The consensus seems to be to get an adjustable, but tune around a specific rate.

[Jaxx_]

bandaid. But if you want to go ghetto, that's the way to do it. Just don't go higher than 60psi. And if you're going turbo I would suggest something like SAFC. Still, you're not going to make proper power unless you have a good spark map.


I think that 30# injectors will be fine for 8psi but you should have a way to tune for that fuel.

[Dj Buttchug]

Stock motronic can handle 30lbers

yea but without a rom tune or chip it runs like shit. ask me how i know.