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Old 06-16-2011, 09:51 AM   #1
Applegarth
 
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Whipple fuel injector specs

Does anyone have a specsheet for the fuel injectors that come with a Whipple Supercharger kit (Siemens Deka 107962 iirc)? I bought the tuner S/C kit thinking the injectors would have some paperwork with them but there was nothing

Specifically, I was wondering about the Minimum Injector Pulswidth. The only thing I could find online is http://siemensdeka.com/specsheets/FI114962cs.jpg and it lists a 1.391ms minimum pulsewidth. That is almost twice what the stock injectors are...

Thanks for the help!
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Old 06-16-2011, 07:25 PM   #2
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That all sounds right.

We use that injector quite frequently and its one of our favorites.
Haven't had any issues tuning the low side (idle).

Thanks
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Old 06-17-2011, 12:04 AM   #3
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No kidding? With that pulsewidth the car would idle with an AFR between 10.5-11.5:1, and the injectors kept the same pulsewidth from idle to about 900 rpm. It looked like the injectors simply could not spray a small enough quantity of fuel at idle. I turned it down a little bit and the AFR at idle raised quite well.
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