stock injector upgrade limit

[unsunghero0]

Concerning a 2nd gen STOCK computer running injectors, what is the largest cc rating you can go with without having issues? 240cc/min? 360cc/min?
im wanting to run 7psi. thanks!

[mars_volta]

FWIW, 37 lbers would not idle on a stock OBD 1 94. not without playing with fuel pressure. which i wont do.

i think 33 lbers will, but 7 psi will be pushing those hard.

[slowion2]

don't plan on just throwing larger injectors on the stock fuel system and ecu and think it will run well, or even half way decent

[mars_volta]

saturnshadow runs 33lbers + a RRFPR + ford super 60 and hes been turbo for quite a while. i also think hes lucky it still runs. he must drive off boost alot.

megasquirt FTW!

[slowion2]

exactly

[saturnspeed_12]

don't plan on just throwing larger injectors on the stock fuel system and ecu and think it will run well, or even half way decent

exactly. it can get to the point that the ecu will run the injectors down so the car goes lean then it will pick it back up. you have to have some kind of controller with bigger injectors or a seperate set of injectors with their own controller.

[unsunghero0]

is saturnshadow on stock pcm? what year is his ride?

[mars_volta]

stock pcm

93 sc2 i think.


megasquirt is less than $200 and as easy to hook up as a stereo (IMO).

[GTI]

stock pcm

93 sc2 i think.


megasquirt is less than $200 and as easy to hook up as a stereo (IMO).

whoa I thought it was past 500 in price. thanks.

[kagekun]

stock pcm

93 sc2 i think.


megasquirt is less than $200 and as easy to hook up as a stereo (IMO).

Course the biggest problem is tuning it. Ive read guides for DSM's that make it sound so easy, but for a satty [img]{SMILIES_PATH}/confused.gif[/img]

[saturnspeed_12]

ms is the same all around, got to do the tuning. if you understand how it functions and know how to mess with it, then yeah it probably going to be easy, but if you have no idea then its going to be hard. must read up on it. but saying a dsm would be easier then a saturn isnt right. they both go through the same thing, you just have to know how to tune it.

[S.Bretz]

MS is pretty easy

[S.Bretz]

i think 33 lbers will, but 7 psi will be pushing those hard.

That depends on how efficient the system is. I was running 30's on 10 psi for over a year.


You should look into an 034 efi gimmick, a megasuirt, or at least an SAFC

[mars_volta]

MS is a piece of cake. my car started on the first try. runs just fine and hasnt left me down in over 2000 miles.

[TunerFreak]

saturnshadow runs 33lbers + a RRFPR + ford super 60 and hes been turbo for quite a while. i also think hes lucky it still runs. he must drive off boost alot.

megasquirt FTW!

there was another guy i believe that did the same thing; i think it was supersaturn on TSN running 33 i think too without any fuel tuning