Walbro255 question:

[BlackAWD]

Hey guys i would like to know the difference between walbro255 and stock fuel pump? I just replace mine and seems like the stock fuel pump is bigger than walbro255 is this sounded right? feels like there is no difference when you drive it is there anything i'm not doing right.

 

[Red97Eclipseboy]

Hey guys i would like to know the difference between walbro255 and stock fuel pump? I just replace mine and seems like the stock fuel pump is bigger than walbro255 is this sounded right? feels like there is no difference when you drive it is there anything i'm not doing right.

Lol! Yeah, what you're not doing right is not having enough mods yet to even have that pump. The 225 is good for around 500whp on a DSM. Your stock one runs out of flow around 250hp'ish or sooner. Plus, with that pump, you're going to need an AFRP, because you're flowing way too much fuel. You need to add some air to the mix. You're running pig-rich. Rich=slow. Put an AFRP, full exhaust, UICP/LICP, BOV, boost controller and boost gauge. Then see if it feels better. If you don't turn up the boost, you won't need a pump. I have my boost at 14-15 psi with 93 octane, with full exhaust, UICP/LICP, bov, MBC, intake w/ pipe etc... and I'm running not running lean without having my 190 in yet. If you just have an intake-like your list says-you don't need to have that pump in yet; however, it is not a bad idea as long as you're planning on putting other mods on. Better safe than sorry!

 

[EvolvingGST]

Dude in ur profile you have one mod.... please tell us what else you have because that upgrade is rediculous if you have no other mods... atleast get a MBC or something... 255 is borderline he doesnt HAVE to get a apfr....

Well yeah, my 255 lph pump was smaller than my stock one ^^;; sounds right... Who ever designed the fuel system in the GST needs to be shot...