which is ideal to get? arent they both high pressure? is the HP even more High? i just got the stage 1. i'm replacing the inline and stock fuel pump with a walbro, but dont know which i should get? by the way, i'll be running 450cc injectors with this new walbro pump. any help will do...thanks.

It looks like they are the same thing to me. 255HP is the model# and 255lph is the flow rate (255 liters per hour). Hope that helps.

on a side note I've got one I can let go cheap. :thumbsup

http://forums.2gnt.com/dcboard.php?az=show_mesg&forum=8&topic_id=78842&mesg_id=78842&page=

LOL j/p :P Hopefully you'll have better luck than I did...look like from the responses I've got I just a bumm pump. :)

they both pump out 255 liters per hour(255lph). the HP is just more pressurized(High Pressure). i'm not for sure which one would suit you best though, it's a toss up i guess.

and you might want think about getting an intercooler(if you don't already, but you said you have a stage 1) if you're going to be pumping all this fuel in.

and like i said, i don't know your exact setup, but 450cc aren't exactly just 'plug and play' with the fmu Hahn gives you.

I doubt you will be running high enough pressures to warrant the hp model. Since you wont be running the stock injectors , you will have to turn the pressure down to idle on 42's. THat is unless you have a standalone, megasquirt or the EIC controlling those injectors.


THat was from corbins site.

http://www.2gnt.com/www/corbin/example.html
dont you have me on your AIM buddy list?

guess ill just get the LPH, so i should also get an sfmu for the injectors, and maybe a SAFC ll ?

I got the HP just because it cost the same as the regular one, and flowed more. :shrug

Originally posted by thedawg
I got the HP just because it cost the same as the regular one, and flowed more. :shrug

thats exactly what i was thinking!

shoot if they cost the same, go HP . whye even second guess?

I think it comes down to this...

If for some strange reason, you have a stock Star/HRC kit, with stock 235cc injectors, and you REALLY wanna run 8psi boost, and you have no inline fuel pump, the 255lph-HP should supply your fuel needs on its own. The regular 255lph will not give you enough fuel to run a turbokit on stock injectors without some help from an inline.

Using it in this way is dangerous to say the least because youre right on the edge of the fuel pumps capabilities. You could turn on your headlights and wipers and the voltage drop would be enough to blow your engine.

Once you add a second/inline fuel pump, or larger injectors, it doesnt really matter how much it flows up top because you dont need those high pressures (>90psi) anymore.

ahh i like that! since i will be on the stock injectors for a little while, til i get all the necessary's to run the 450cc's, i might as well get the HP model....thanks! everyone

well... nm, I guess im always the exception.

this is the pump im running on the 1g, http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7931852082&category=33555 , but im also gonna be running 800cc injectors via megasquirt system

DWAYNE H
95 widebody eclipse
92 Awd Talon
03 G35 coupe Sold- missed
96 chevy lumina
00 yamaha R1

i have the high pressure pump and its fine.