so turns out my hobb siwtch was not working...i put hobb switch in the EGR block of plate, on the lower part of the EGR..and it turns out its a wrong spot? i dont know...well either way, i hooked up the hobb switch straight to a vacume hose and sure enough 2nd pump kicks in right at 5psi. Now i am running rich as hell up to.p Now i can redo my PE table and actually have it work like it suppose to be working...but ya....383 + 18psi = easily over 700rwhp all on one Walbro 255 pump I wouldnt recommend it but ya ehhe



and for future refernce....TAP THE TOP opening on the EGR blockoff plate for the hobb switch....i got everything working again..now back to tunning!

 

So, just out of curiousity, is it safe to run 1 walbro on 15psi from a T70 on a 355ci? (Approximately 600rwhp?) I'm trying to decide whether or not I need to buy 1 or 2.
Also, where is the cheapest place to buy them?

 

This is kind of misleading. Wasn't your fuel pressure dropping 20psi in the upper rpm's?

 

no low 40s



i wouldnt recommend it, but u can get away with it....i did...i didnt even have a clue bout it when i was runing 14psi and 640rwhp

 

My car was leaning out with a single Walbro 255 right at 600 to the wheels. A 255 inline fixed the problem.

-Chris