Injector size question

[geno414]

So i have no idea what to get but before i get started you need the facts.
Hear they are so i have a 2.3 stoker 6 bolt fadanza fly wheel small 16g turbo
mbc and wanted to set it to 20psi but still running stock boost because of injectors
i have a safc2 and have no idea what the max cc is for the injectors on it and i have right now 550cc on my car and i think i need bigger ones ? i found a pair of 650cc ones but is that good or should i get the 660cc? the 660cc are about $200 more but i get the 10cc more then the other ones now i'm on a budget so i won't have a lot just what one should i go with or is my 550cc set up good ??? will i get lean or fuel cut ?

 

[snowborder714]

The max injector size recommended for an SAFC is 660cc.

You can use this tech article to see how much airflow each injector size can handle. This is what really matters, and how you should base your injector purchase.
http://www.dsmtuners.com/forums/articles-tuning-ecu/366003-injector-fuel-pump-supported-airflow.html

As a guess, the 660cc injectors would be a good size. My small 16g flows about 37-38 lbs/min at 21psi, which would put the 660's at 80% IDC, which is just under the suggested max IDC %. Granted, I'm on a 2.0, so your 2.3 might change those flow numbers a bit.

 

[jpmxrider489]

The bigger the injector, the harder to dail in. You probably heard this a billion times but you ccan get dsmlink. Is your car a daily driver? Since you have a stroker, you should just sell the injectors and go big. I have a small 16g with 1000cc injectors. I just got link and its the best.

 

[geno414]

Yes it is my DD. and thank you snow boarder for the link and info that will help a lot i'm going to go with 660cc or 650cc then because my little 550cc can't handle anything. and thanks for the safc2 info that just saved me a lot !

 

[geno414]

would a 190lph pump do the job with 650cc? on my 2.3 stoker ? on 17psi or 20 psi or stock psi? or should i get a 255lph pump but what would i need for that because i herd the stock fuel reg can only support a 190lph.

 

[92AWDHX40]

I would get a 190 unless you get a 255 then youll need a afpr.

 

[snowborder714]

Did you look at the link I provided you? The pump info is in there as well

Whatever pump you get, rewire it. You can see the gain in that link.

 

[geno414]

I would get a 190 unless you get a 255 then youll need a afpr.

but i have a 2.3 stoker and i don't know if it will support my 650cc injectors with my turbo im new to the fuel i looked at the link and only got a drift of it.

 

[snowborder714]

If you plan on running 20psi, the 190lph can support 38.62 lbs/min. If you compare that to the data I provided above, you'll see that it is very close to what I run at 20-21psi.

If you rewire the 190lph and still run 20psi, it can support 51.70 lbs/min. You will not be able to achieve that kind of airflow with a small 16g. So a rewired 190lph would be a great choice.

 

[geno414]

thank you for clearing it up better for me !