Ok, I have a set date to get my hondata tuned (wednesday 25th), and Im not quite sure if my walbro 255 fuel pump can make it in time. My question is....

If I take note of what the tuner sets the fuel pressure to, can I switch out the pump later in the week and adjust the fuel pressure down a tad to the right value after its been tuned?

 

ttt

 

If I were you.. I'd wait with hondata tuning.
255lph pump might give you a little higher fuel pressures than stock -> and all yr tuning is for nothing.. well, not all, but it wont be as it should be.

 

I would be able to adjust the fuel pressure with my b&m regulator though, I know once I put it in, the pressure will go up abit....

 

bump

 

stock fuel pump is good for about 350 whp.