255 enough pump?

[yeahloh95]

my t-rex gave up on me can i run just my 255 intank with my hci s-trim ? i do have a fmu, but will be pulling it off to go with 60s

[venom]

I would get that 340 LPH in-tank before the 255.

[yeahloh95]

i agree but i already have the 255 in there just wondering if i can drive it this way? til i put the new injectors in and put the 340 in tank??

[SK@StreetLethal]

How much power is the car making? How much boost?

[yeahloh95]

it makes 15 lbs and has made 455 to the wheels

[349Stroker]

I think u will need an inline. If you are running an fmu and running the pressure up i would just put a gsl 392 inline on and not take the chance. If you have a gss 307 it definitely wont cut it.

[cwh19]

I made 448whp on a mustang dyno with a 255 and it was fine.

[349Stroker]

I ran 16 psi throughba stock longblock and was out of pump and had the high pressure 255. And on my other car with trick flow heads and 14 psi it was dead lean as soon as i hit the gas. Inline and it was fine. I had no fmu on either car.

[yeahloh95]

yeah i know the fmu needs off of there and would allow me to run less pump

[gmkillr]

I made 505 rwhp on a stock longblock with a s-trim, 60 lb injectors and a 255 intank walbro pump (gss340) and made power to 6500 and had plenty of fuel with no issues for 3 years.

[bluenotch]

255 wasnt enough pump for my turbo car.

[yeahloh95]

thanks for the feedback guys i'm still not sure what i'll do first i want to move up in inj size and that will allow me to remove the fmu

[yeahloh95]

well tonight i did some checking and found relay for t-rex unplugged :( all fixed and revs like a champ again

[Martin0660]

well tonight i did some checking and found relay for t-rex unplugged :(

I'm unplugging your 3,000 rpm rev limiter next ...

[yeahloh95]

this car has a 6400 chip in it bob lol