hi there!
when using the 450 or 550 cc injectors, do they fit in the original fuel rail, or do you have to build a custom rail?
also, what boost can a standard fuel pump handle?
is it better to by one large fuel pump or is it safe to run two standard fuel pumps?
thanx

 

id say 10psi is the max safe daily driving limit of a stock pump in GOOD shape. Also depends on how your are controlling fuel. If you plan on a FMU GET A PUMP. but if u do the afc hack you should be ok.. but for 100 and your time its cheap insurance.

im not sure about 550cc (what car?) but DSM 450cc's just need to have a injector seal enlarged. Check out the tech projects page for a DSM 450 install.

 

DSM 550's are almost the same as the 450's I helped my buddy do the switch on his eclipse