I went out to street tune my double pumper set up the other day. Everything is going good, and I can hear my Walbro getting super loud after each rip I take. I can also see that everytime I add fuel the car seem to still run lean! Map ends up looking like a map with a single walbro... Great I have a Walbro taking a crap! New pump will be here tomorrow, hopefully it gets here early so I have time to change it and go look at the tune afterwards...

Lesson learned, once again don't use the walbro that was in your car when putting together your double pumper... spend the extra $100 and buy a new one... I am already dreading pulling the DP back out....

 

damn im doing this right now...

 

that happened to me unfortunately and i ended up buying a new pump instead of the old one !

 

how about trying the new aermotive pump .. seems alot of walbro's going bad ..

 

or the DW....

 

Because I actually pay attention to most things that David Buschur says... in this case the DW or the Aeromotive flow about the same as a modifed Walbro as per his calculations... I was stupid for reusing a 5 year old Walbro, I hate being cheap sometimes...