Keep in mind that the Jet MAF recurves the output to make the engine run roughly 5% leaner. The CAI will also do the same thing... leaning out the curve an additional 2% to 3%. That takes your 14.6:1 AFR and pushes it to about 15.7:1. While good for fuel economy, it's not good for performance. Even once it goes into open loop, you're taking the 11.8:1 (average) AFR and pushing to about 12.5:1. That's a bit too lean for any but the most aggressive racing tunes. Certainly not something you want on the street.
Also, I haven't taken into consideration the slight leaning affect by switching to the true dual exhaust.
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Bill Cohron - The Mad Doctor  
Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997!
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