Hey HMT, this is my 1st thread and read lots of write ups and threads here and I must say this is a great forum with lots of shared knowledge. I'm most likely going to be on tis forum more frequently and thanks for all the info :].



I'm currently working on a fmu 12:1 ratio setup and for my pump side, I'm opting between a in-line pump or a intank pump (I have a friend that is selling his walbro 255lph in tank pump for $30). I have looked over the walbro 255lph flow rate graph and I feel like with that I will be only be able to push 7 psi, is that correct? I'm wanting to push 8psi so I am currently deciphering whether to get that or a high volume in-line.

 

i was told in tank and 190lph is all you really need on a honda, but i got a 225lph in tank anyway. what are you driving? anything newer than 91 it's a super simple job, older hondas need to have the tank dropped.

also ---- the fmu. get a simple b&m regulator with your 450cc injectors or whatever your running and get it tuned. i dont care what anyone says just do it right the first time. people have said shitty things about the b&m bolt on fpr. i bought one used and have been running it for 4years without a problem

 

Don't use the b&m hack. Mine f'd up after a year and had to buy an expensive aftermarket one to replace it.

In tank pumps are always better. You don't have to worry about vapour lock.

 

in tanks usually last longer because of cooling issues.