What is the difference between RC SL4 and SL9 injectors?

Govroom · Post by **Govroom** » Thu Jul 30, 2009 5:39 pm

I am just try to satisfy my curiosity and spend hours searching the net and still don’t know. What I think I read and I am not sure this is accurate:
They both will fit if you use the Honda style SL4’s.
They have different bodies and slightly different lengths.
They have different spray patterns
I did not see a SL4 440 Honda style on the RC web page
When I use the RC calculator for my 1997 Civic B16 with a small turbo making 220 hp, I come up with 440 cc/min, but I am told the 370’s will work fine. I prefer to use the style and size that is most commonly used for this application with a Hondata s300.

Post by **Spunkster** » Fri Jul 31, 2009 9:41 am

Just get the 440s this way you will notj max out the duty cycle of the injectors. I do not know the specifics of changes RC has made, for that you would need to contact RC.