I've got a new holley/walbro 255 pump in my tank but i also have an msd inline pump sitting around i was going to install inline back near the tank somewhere. anyway, i want my fuel system to be ready for when i get my bigger turbo here in the next 6-12 months and i want to do everything at once now so my question is..... is their any need for an additional pump if i've got the 255 already? or is the saying "the more the merrier" true here?

i'm running 25psi with this setup, will be bumping that up to about 30 with an sc63 in the future......

-Erik <--- thanks guys

 

nobody?

 

i have seen around 500 whp on a walbro 255 pump with stock lines.don't change it

 

Well good comments that's what I want to know about this fuel pump so I think is good for my h22a turbo a 14psi

COUTO

 

thanks man

 

Get rid of that inline fuel pump and get yourself some larger injectors and a air/fuel controller...

 

car isn't yet on the road/track...

i've got a dfi gen 7 standalone and the injectors aren't going to be big enough but i can work on that later.

the reason i was inquiring on an additional fuel pump would be as a safety/backup so if for any reason my walbro 255 didn't hold up or couldn't provide enough fuel, the inline msd would pick up the slack.

 

255 is fine for atleast 400whp IMO.

 

I did 420whp on a walbro gss341 which is a 255lph non HP.

 

stock lines and a walbro255 are great for up to 500 to the wheels. if you are planning on running close to 30 lbs of boost on a sc63 you are going to make alot more power than that. say you are around 600-650. you should consider 8an feed lines and an inline pump ala aeromotive, paxton, weldon, etc.......

 

If you're really worried about getting every last bit out of your Walbro, don't use the stock honda fuel-pump wires. Set it up with a relay and some decent gauge wiring (gauge 5-8 will probably be fine) off the battery (MAKE SURE to run an inline fuse close to the battery). This helps because the walbro draws more amps than the stock pump (and more than the stock wires can fully provide). This also eliminates the "turn signal sound change" in the fuel pump's operation.

Hope that helps,

Ryan P.

 

thanks for the replies guys.

I've replaced my power wires with 12 gauge (better than stock, not too overkill) that come from the relay on my accel dfi harness...

i guess i'm gonna put this MSD i have inline for now just b/c I have it but it sounds like I'm going to need more pump in the future....