View Full Version : performance uses for the CS injector???

01-25-2010, 04:48 AM
i have heard that the VW guys use their Cold Start Injector during wide open throttle, to get a richer AFR. Would this work on the 90-91 5sfe? I tried to search for info on this, but i could not find much on the subject. Could i just set up the CSI to run off one of the other injectors when at WOT?

What do you guys think?

joe's gt
01-25-2010, 06:18 AM
Are you planning on increasing timing along with the increase in fuel with this method? Personally I think its just a band-aid tuning fix. The idea of randomly putting unmetered fuel into the engine that won't even be distributed equally to all cylinders sounds like a waste. Does the 5sfe run out of fuel at the upper rpm range?

01-25-2010, 02:02 PM
The 5SFE runs rich anyways.

01-25-2010, 05:15 PM
ya, i need to get a wideband on my car. I was thinking with my 58mm TB and porting out the intake manifold and head ports i might need a little more fuel in the upper rpm range. just an idea, i didn't think it would really be worth it.