924Board.org

[serz]

Hi, is there an additional "cold start" injector on 931 s1, like n/a have? And is there a simple way of manually activating it when needed? Thinking of buying and installing dry nitrous system, but with that injector it would by better
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ex Porsche 924 1978
ex Porsche 924 1982
Now Porsche 924 turbo
http://www.thebestporsche.com

[daniel]

I beleive all Kjet 924's have the cold start injector. Not overally sure what you want to acheive, but in my thread a couple down from yours I had contemplated using the CSI to lean up my mid range. This block diagram is how I intended to use it:



In my case I would use the RPM switch to cut the CSI off after about 4000rpm, but you might do the opposite. Naturally the PWM circuit would have an adjustment for pulse width and also to fire the injector every time an ignition pulde is received, every 2nd, every third ect ect
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Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet