[Tony Curcio]

First, I want to say that when I wrote that the result was opposite of what I expected, it is probably more accurate to say "different than what I understood". I was told I'd need to jet up to realize the full potential of the merge collector, and this is what happened. But I thought the AFR would go leaner upon installing the collector.

After reviewing the log book for test & tunes on July 28 and Nov 7, I'm now reassured that this carb was jetted optimally for the real life conditions we encountered. I was concerned that it was too lean going into the dyno session, but the temp was only 10-12 degrees lower yesterday that it was on Nov7th. The dyno setup was still making more power even after a radical move from .050 to .040.

So, I think this means the extra exhaust velocity was making it want more fuel?

-Adger, you are correct, it's a 255 HP 350, which has 9.00 to 1 compression.

I am not sure I understood the question, "can you say it needs the A/F ratio the engine wants? ". I suspect that on track tests will show that it doesn't want to be quite so rich- is that what you mean?

-Mart- I will look over the BSF again. thanks for your comments.