Hi there all, Just wondering if I changed my fuel pump in the main tank(because I think its not working) that fills a surge tank. If a replace it with a bigger or smaller one will I have dramas will fuel pressure even though the pumps in my surge are not going to be touched?.....cheers

nah, you can change the lift pump if you want to... you shouldn't really need to though, assuming it's not the stock one and even then you might not need to.

if the main tanks pumps not working, then you wont have any fuel.

 

I use a std main tank pump to 5l surge tank and walbro 460 inside that. My car is only 400 hp on e85 but ive never had a problem with the std pump feeding the surge tank enough fuel.

just remember the pumps flow is higher as its not under pressure. so although there like 165lph std pumps they would do considerably more at 0psi than 60psi pressure.

 

unless your making bulk power you wont need anything overside in the main tank as you may just end up overheating the fuel.