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Old 02-09-2015, 11:55 PM   #16 (permalink)
BabyDiesel
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Join Date: Dec 2012
Location: Johnston County, NC
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Big Blazin' - '88 Chevrolet K5 Blazer Silverado
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90 day: 14.97 mpg (US)

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So I may have encountered a problem earlier today. While researching some things regarding the TBI system, I saw over and over that big cams were not good for the computer.

But whyyyy? The intake reversion caused the MAP sensor to go nuts. With the Atkinson cycle, the efficiency comes from the piston pushing the cylinder mixture back into the intake manifold, a.k.a. intake reversion. So the computer is not going to be able to tell the difference, it seems. I will be contacting Brian Harris @ TBIChips.com and asking for his wisdom. He did my last chip and did an excellent job, his knowledge on these trucks is outstanding. This just might decide the project...

Stay tuned y'all!
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Past threads:
ZX2 modding thread
Ecomodder's Top 10: How they do it!
ZX2 Aerodynamics: Shooting for 0.15 Cd
ZX2 coast-down testing for Cd & Crr
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