Evo 8/9 on road course - fuel starvation common?
With the ease of access to advanced ECUs, a fuel pressure sensor with an ECU failsafe is something that should be considered if tracking any Evo due to the starvation issue. A surge tank is, of course, a very good fix for something that isn't a dedicated race car, but a loss of fuel pressure from any mechanical fault can toast an engine. The ECU can save your engine a lot better than you can!
http://www.radiumauto.com/Fuel-Surge...-8-9-P386.aspx
http://www.radiumauto.com/FST-Fuel-S...dard-P515.aspx
With a surge tank it is constantly overflow returning to the tank so you shouldn't have an issue because the return is near the pump so the overflow will keep the pump fed inherently. Also the pump in-tank is considered a lift pump so it's flow needs to be at least half the free flow (0psi) of the pump or pumps off the surge tank supplying the fuel rail.
http://www.radiumauto.com/Dual-Exter...anks-P526.aspx
I would get this and do the horizontal config and put it where the evap system is under the trunk and behind the rear left wheel.
http://www.radiumauto.com/Dual-Exter...anks-P526.aspx
http://www.radiumauto.com/Dual-Exter...anks-P526.aspx
anyone know why this issue isn't normally addressed within the tank? it seems you only need to put the fuel pump assembly inside a container 
any smart ideas @ayoustin ?

any smart ideas @ayoustin ?
Fuel Cell you can do a FCFST (Fuel Cell Fuel Surge Tank)
From what I've seen the stock tank doesn't starve til it's around 1/4 tank. It's better than most other factory fuel tanks out there.
I'm not a fan at all of surge tanks, they rarely work correctly the first time. It's almost always easier and cheaper to just put a fuel cell in the car if starvation is a huge problem on a racecar.
I'm not a fan at all of surge tanks, they rarely work correctly the first time. It's almost always easier and cheaper to just put a fuel cell in the car if starvation is a huge problem on a racecar.
anyone know why this issue isn't normally addressed within the tank? it seems you only need to put the fuel pump assembly inside a container 
any smart ideas @ayoustin ?

any smart ideas @ayoustin ?
see here..>
Last edited by kikiturbo; Jun 6, 2022 at 04:36 AM.











thanks.