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Old 02-18-2009, 10:48 PM   #1 (permalink)
 
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Question question on Walbro 255lph pump

hey i have a 2005 evo with with turbo back exhaust, intake, 02 hosing, hks bov, upper IC pipe, hks belts, few other small bolt ons and going to be tuned in a week. i want to get a walbro 255lph fuel pump but wanted to know if i need to get anything else with it like a fuel pressure regulator, fuel rail, injectors, ect... is it manditory if i do it or if i just threw it in there and tune it would it be good? also is the lph pump the one i would need or just the 255? reason being was because im low on money and i got a tuning appointment next week. can i just add the other fuel parts later or should i wait on the tuning and just buy everything else?
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Old 02-19-2009, 12:50 PM   #2 (permalink)
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lph is liters per hour. a walbro 255lph flows 255 liters per hour. That is all you need for now just get the pump and take 30 minutes to install it. its a good safety buffer and a proper tune will make your setup nice. You will need to tune for other fuel parts later on though. Good luck!
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Old 02-20-2009, 01:12 PM   #3 (permalink)
 
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ok cool thanks. also what size are the stock injectors? if i were to still get the fuel rail and pressure regulator would it make a difference? or would pump be good?
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Old 02-21-2009, 05:01 AM   #4 (permalink)
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Pump will be good you have no need for any other fuel mods at this time. I am at about 96% duty cycle on my stock injectors, fuel pressure regulator, and rail and i'm making over 400whp. The stock injectors are 560cc. If you plan on getting a bigger turbo, tuning super aggrssive or running a whole bunch of alky and 30psi then yes injectors would be a good move. Remember with injectors you can always scale them down. dont buy a set that is too small for maybe a future turbo upgrade, go bigger so you wont have to buy another set for awhile. Just tune them accordingly.
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Old 02-21-2009, 04:06 PM   #5 (permalink)
 
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alright sounds good. thanks alot. that will save me some money haha.
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Old 02-21-2009, 06:41 PM   #6 (permalink)
 
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Quote:
Originally Posted by SicLanEvo View Post
Pump will be good you have no need for any other fuel mods at this time. I am at about 96% duty cycle on my stock injectors, fuel pressure regulator, and rail and i'm making over 400whp. The stock injectors are 560cc. If you plan on getting a bigger turbo, tuning super aggrssive or running a whole bunch of alky and 30psi then yes injectors would be a good move. Remember with injectors you can always scale them down. dont buy a set that is too small for maybe a future turbo upgrade, go bigger so you wont have to buy another set for awhile. Just tune them accordingly.
96% is too much; limit should be 85?
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Old 02-21-2009, 09:18 PM   #7 (permalink)
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lol its all good new setup is coming soon.......that was before my alky though.....
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