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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
I am not saying it dose not work.

If your sound test shows a difference we know it has an effect.

If the dyno proves it is a positive effect that is excellent.

I suspect two things going on.

First the header cross section restricts down from the secondary tubes to the turbo buy almost 2 to 1 .

Second, the secondaries are in effect at almost a right angle to each other as they approach the area into the the turbo.

The dam should help reduce turbulance and help compensate for both of these factors.

On top of this, it would seem the 'bridge' wast gate conection will already have functioned as a 'cross over' and had a significant equalization effect to balanced each sides pressure waves.

Thus, I do think the 'cross over' and 'dam' are probably both positive features.

However, I do not see how we can attribute any of the benefits of a 'split scroll' system to them.

Just my unexpert opinion.

The best.

Last edited by 911st; 06-05-2010 at 01:30 PM..
Old 06-05-2010, 08:58 AM
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