Which injectors fuel pump for 20 psi

[johnk]

I want to run about 20 psi I have a 2.5 turbo back and an evo 16g. I am looking at the fuel management package on extreme PSI. Would 550 injectors be run at too high a duty cycle at 20PSI? and will a 190 pump work fine for keeping fuel pressure smooth? I'd rather avoid getting the 255 if I can cause it needs an AFPR. I don't have a front mount yet but it's on the list when I get money.

 

[Coldandafraid]

get 660s or equivalent, and a 210 lph fuel pump from a RX7TT. That way, no whine, good flow, and no afpr needed.

 

[doodie]

550cc's with be suffice. You don't need 660's till y ou go pass a 20g.

 

[Coldandafraid]

I dissagree. The injector duty cycle will be too high at 20 psi, on 550s.

http://www.dsmtuners.com/forums/showthread.php?t=104140&highlight=injector+duty+cycle

 

[johnk]

OK I'll go with the 660s then thx. This is a package deal so I don't get to choose the rx7 fuel pump. I have to pick between the 190 and the 255 walbro units. Is the 190 suficient or should I go with a 255? I want to avoid getting an AFPR if possible.

 

[badgsx]

The 190 is fine with the Evo 16G.