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800cc injectors - too much?
Posted: Sat Jun 20, 2009 5:46 pm
by Jutboy
It looks like I'm going to be starting my EJ22T build really soon. I've got a set of nismo injectors 800c that I picked up really cheap a while ago.
Does anyone anticipate any problems running them?
-J
Posted: Sat Jun 20, 2009 6:47 pm
by asc_up
Umm without EM, yes. The largest sized injector you can run on the stock ECU is 440cc.
Posted: Sat Jun 20, 2009 6:55 pm
by Jutboy
I was planning on getting a piggy back system...
I should probably mention I am going to use 2.5 heads/intake (DOHC) and I've got a vf23.
Posted: Sat Jun 20, 2009 6:56 pm
by Jutboy
I also am interested in any information on how to choose the proper size fuel pump. If anyone has any guidance I would appreciate it.
Posted: Sat Jun 20, 2009 7:08 pm
by douglas vincent
Currently running 800cc on 1990 ECU with PP6 piggyback. Idles just fine, starts just fine. Using Walbro 255 pump.
Posted: Mon Jul 13, 2009 9:52 pm
by Lego
asc_up wrote:Umm without EM, yes. The largest sized injector you can run on the stock ECU is 440cc.
not true, i run 480's everyday
Posted: Mon Jul 13, 2009 11:57 pm
by BSOD2600
While your 480's might "work", it's very far from ideal. I bet you're super rich / rough idle. During WOT, you're dumping fuel and once again running rich which hiders performance. Until you get a wideband, you really have no idea...
Posted: Tue Jul 14, 2009 1:00 am
by 93forestpearl
^ +1.
You could be cruizing at 13.2:1 and not even know.
Posted: Tue Jul 14, 2009 3:39 am
by Lego
well i have data now so check my thread on it
Posted: Wed Jul 15, 2009 6:02 am
by asc_up
Plus, didn't you have to add an extra hole in your intake piping so it would suck it more air and not cause it to run so rich? Or was that just an idea you had?