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Alright y'all, Brain Harris just e-mailed me back... not looking too promising. Here is what I wrote -
Hello Mr. Harris. What I am attempting to do is replicate the Atkinson cycle on my engine. I am looking into using a camshaft the has around 300* @ 0.050 duration for the intake. I understand through research that this will cause issues with the MAP sensor. Is there any way to tune around this?
Also, is lean burn (15.5 - 17.5:1) possible with the right precautions and tuning?
Thank you sir.
Here is his response -
nope, you need a mass air sensor computer system to attempt that not a map based system. All of my attempts at running an air fuel ratio leaner than 15.2 resulted in significant loss in gas mileage.
Looking back at what I wrote, I should have mentioned that lean burn would be used cruise-only.
Soooo, any bright ideas boys and girls??
I have seen conflicting reviews on TBIChips and their ability to tune is worth a half-penny. I have heard reports that EagleMark over at Gearhead-EFI has fixed many of his chip problems. I will go over there and ask for their knowledge and second check Mr. Harris's answer.
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