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On 19 Feb 2004 at 9:49, Roush, Norman wrote: > If I keep the stock FI setup is adjusting the fuel pressure the only > adjustment needed? Yes > I have seen this post before and would like to stir it up a little. Is > that also true with carbureted engines and why would it be different > changing the stroke and not the bore... It's not the same for carbs because carbs measure airflow differently. They already meter out a certain amount of fuel for a given amount of air. Our FI only measures the manifold vacuum, not the air mass, so we have to compensate. I don't know why bore and stroke should be any different. > > > What is the maximum size of engine that the stock 70's FI would be > > > happy with? I was thinking of perhaps a 1776 with standard size > > > valves, stock exhaust and mostly stock everything else. Would the > > > FI cope with that? That's only a ~10% increase. I can't imagine that it would be any problem at all. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org