5bar FPR

[MarkB]

Is raising the fuel pressure an acceptable way of getting more out of stock injectors?

Would it cause issues with mapping? (custom remap)

[JonnyX]

You would get more out of your injectors (and probably better atomisation)
but you still need a fuel pump that can meet the flow rate and rail pressure.

[MarkB]

So a better pump and a 5bar FPR could be a good move? If the tuner is happy to work with them

[tartan_rob]

You need to be careful that the fuel system is upto the extra pressure. The would be my main concern. What is std fuel pressure?

[MarkB]

4 bar I think

[ZeroK66]

I replied to this but my post seems to have vanished?

There must be quite a bit of cost involved in getting this done & also the map would have to be developed from scratch. I think it would be a good idea though... smaller injectors means better atomisation which means potentially better fuel economy... we would all be happy with that. I just think the costs of working on this would out weigh the cost of simply buying injectors?

[MCB]

Could do with Minhea or Doug to add to this however I can't see why this would be a problem. With my limited knowledge stock pump and 5bar FPR should be okay and cant see why MRC Co could not tweak your map to account for this?

[JonnyX]

You should actually be able to manually scale this. Get a MAF housing which is 25% bigger for instance.