would i need to have my car retune asap if i install the walbro 255hp fuel pump or i could get away for a few weeks driving it, i'm planning to have it retune within 4 weeks. i'm also be upgrading the injectors from 310s to 440s on the day of the tune. tia!!
set up:
integra ls b18b, 18g greddy kit, 8psi, tuned on crome
stock fuel pump
stock fuel rail
stock fpr

searched but came up with no definite answer

 

For now to get by just put a Fuel pressure guage on your filter, put in the 255 and put the fuel pressure to stock and you should not have any issues, when they tune it they can adjust when you put bigger injectors in if need be.

 

i heard somewhere that some people don't have any issues after dropping them in without any retune. it will run just a little richer but still on the safe side.
i might just wait and install them the day of the tune, thanks!

 

thats why i said if you do put it in just put the FP back to stock and you won't have any issues, it just runs slightly richer becuase it pumps more fuel and raises the fuel pressure a bit so it runs richer

 

just wait, no need to put it in, if your not gonna tune for another couple weeks

 

thanks to both of you for informing me

 

No Problem bud