I have a replacement pump (265L), but standard regulator, and in-tank catalysts - I swear by these but most people regard them as snake oil
The yellow sti injectors are at full duty now - so these would be next to change
I was contemplating a SARD regulator - which would allow better fuel pressure to be maintained + some adjustability to cope with seasonal weather changes - which usually see me doing lots of ECU resets in the quest for more consistent boost.
However I am put off by the fact that this is very inaccessible and requires the intake pipe ( itself a candidate for replacement) to be removed - which is an @rse.
If you were going to do those two, then you might also upgrade the lines to something better than the 8mm regular stuff too.
It would also be nice to have some form of fuel reservoir - as there is not sufficient baffling in the fuel tank to prevent starvation when the tank is low and cornering G-force is high - despite the two sender units.
The only other fuel related item to consider is to change the throttle chamber body to the big diameter 26.5mm (JDM spec-c) variety - this is a straight swap out ( removing intercooler for access)- though need to order matching gaskets too.
So, as you can see - there is still plenty of things that can de done with fuelling - I believe marky D has done the regulator - this is said to not only improve/hold boost but also sharpen the throttle response.
Big downside to all the above is that they will all contribute to worse fuel consumption - so, as I am hurting a bit from £1:10/litre at the moment, I feel it is unlikely I am going to do any of the above items I had in my list :-(
Paul
