sunlitcomet
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- Dec 15, 2010
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Shortly after,maybe a few weeks, installing a jantzers ported TB on a 96 tahoe 350 vortec my mileage started suffering and it seem ever since my egr emissions monitor will not complete. There was a few brief moments in the last 8 months that is has been going on that the mileage had gone to maybe 14. But not back to the 15-16.4 I had before. Asp in the first few weeks of doing it and doing a 1000 mile total Mileage would wonderful from12-to 18.9. Any time it change for good or goes back to worse seem to be dependent on meeting starting the engine. What gives? Any thought at all please. So far I don't see how a ported TB can do this.
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