Walbro 255 Fuel Pump

[cumpersgsx]

everything on my 95 gsx is stock. I was wondering if i bought a walbro 255 fuel pump would i have to make any other modifications like upgrade the injectors or anything?

 

[95blackGsTurbo]

A 255 is going to be way more than you need for your stock car. You can first get a boost gauge, MBC, intake pipe, intercooler piping and 3" turboback exhaust and THEN you just need to rewire your fuelpump to get sufficent fuel to them. You can put a 255 on a set of stock injectors but the fuel pump is only as good as the injectors. I would wait until you upgraded to 550's or 650's to upgrade to a 255 fuel pump. I'm not saying it will hurt anything but I would wait until you upgrade more stuff and get a 255 when you really need it.

 

[JLeach50]

Yeah, get some more air flowing through the engine before upgrading the pump. When you do that, reset your computer. It will usually adjust somewhat to aftermarket parts, so your stock fuel system has the ability to put a lil more out.

I have heard that you should upgrade your Fuel pressure regulator when you upgrade the pump, but i didn't when i installed a Walbro 255 and it does great. hope that helps.

 

[larsenracing]

Before pump and injectors get a fuel contorler like apexi safc or something of the sort.

 

[Flash]

I have heard that you should upgrade your Fuel pressure regulator when you upgrade the pump, but i didn't when i installed a Walbro 255 and it does great.

True, it's because the 255 fuel pump will over ride the stock fuel pressure regulator and mess with your fuel trims. You can run the 255 without harm to the engine, but your fuel trims will not be good.