can i run 450-550 on stock fuel pump

[pbwu1f]

can i run 450-550 on my stock 1g fuel pump? im going to be getting the gm maf sensor and my goals are about 300-350hp on 93 pump gas. i was think in getting a walbro 190 just to be save, but if really dont need to i might use the money somewhere else. thanks

 

[donniekak]

No you can't. Even if it could at one time it's almost 20 years old now.

 

[talondave]

450-550?

 

[Wufei]

A viable option is the stock Evo 8 (probably 9 too) fuel pump. It's got comparable flow to the Walbro 190 but is much quieter with OEM reliability. I got mine for $25 shipped a couple of years ago. Writeup here: http://www.dsmtuners.com/forums/art...mp-install-better-than-walbro-190-2g-awd.html

 

[No_Skillz]

450-550?

I think he's talking about injector size.

Sure, you could run any size injector on any pump. It's how much fuel you will need to be delivering at WOT and high RPMs which is the deciding factor. Stock pump is can't support much more than stock HP. If you want 300-350, you will need an upgraded as posted above.

 

[landrocket]

Go with a 255 lph pump. that way no matter what size injector and boost setting your running you will definitely have an adequate supply of fuel. if you dont get enough fuel and the engine runs lean you will blow the engine. you can get a 255 lph pump off ebay for $50-$100 depending on the brand.

 

[knochgoon24]

But if your run the 255, I'd suggest getting an adjustable fuel pressure regulator. With a 190, you can usually get by without one.

 

[landrocket]

you would need an adjustable pressure regulator but that should be one of the major components you should get if you want to properly tune your engine when you start to modify things. even a bone stock gst or gsx would benefit from an adjustable FPR.

 

[Cmele89]

Can you still run 550's on a stock system and if not what exactly would you have to do just to let them run fine

 

[dsmspoolin]

Another cheap buy would be a 3000GT VR4 fuel pump. Do a quick search or just browse the newbie or tech forums. There is a ton on info on this topic already.

 

[Chaosweaver]

You could, but you'll run out of fuel pump. As the guys said, run a 255 or at least an Evo 8 to make sure nothing will go wrong. I've heard of people running the stock fuel pump successfully with 550s before, but I wouldn't recommend it.

 

[shockracer]

is an Evo 8 pump a plug and play?

 

[airmail96]

You know if you rewired the stock pump and then got rid of the stock filter and the connection to the fuel rail I think you'd be all right.

 

[GsXtC21]

Got my evo 9 fuel pump off ebay for $25 and its said to be about 210 lph, get that combined with 550cc's and you should be fine....