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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Thinking out loud, CIS is air flow sensing and mostly self compensating within the ranges the comparisons should be in. Changing out the headers should not effect AFR's.

However, we might see where boost enrichment is triggered which could be cool and a valid test of how soon each system comes in. That is, if enrichment is triggered at .5 bar and one system dose so 300rpm earlier, that could be significant and a valid fact to sell more systems.

Using the same muffler and if possible the same WG's and being able to monitor actual boost is the minimum to be able to truly compair. If boost is not tracked one might be more testing the effectiveness of the WG circuit than the header design. At least as it comes to total HP made.

Just a guess.
Old 01-04-2009, 12:29 PM
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