Thread: CIS Horsepower
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Thierry25 Thierry25 is offline
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Join Date: Feb 2009
Location: FRANCE (Besanšon)
Posts: 310
Originally Posted by 911st View Post
My two cents worth.

I suspect that getting enough fuel for 400rwhp/470fwhp takes a lot of effort.

3.3 CIS turbo motors were built to supply at its best (special wishes 3.3 S) about 280rwhp/330fwhp.

It requires over 55% more fuel delivery than stock to get to 470fwhp.

By fattening CO I suspect we can stretch the stock fuel system up to about 340rwhp/400fwhp at is best.

After that significantly reducing control pressure can support about another 10%or so more HP.

My 2 cents experience

Use up graded fuel pumps and increase fuel pressure is the easiest way to get more fuel with CIS setup .

Considering the fuel flow capability, the CIS head is not a limit. It can flow huge amount of fuel..... But the stock injectors are the limit and the restriction. By using the injectors of the 3.6T, you can really get a huge amount of fuel. The problem will be to deal with low RPM.
965 C2T / 1991 3.3 TURBO
Old 11-22-2009, 07:27 AM
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