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Old 09-04-2017, 04:12 PM   #11 (permalink)
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A few points mentioned above - I've oil flushed a Renault Megane 1.5dci (eco beast!) and it really knackered the engine before, I am sure it was the flush that did it - never seemed right after, all to the 'Wynn's Diesel Enginer Oil Flush' instructions too.

My first car was a Fiat Cinquecento - such a funny first car. I cleaned the TB on that and it made some performance improvement, but I was having issues with hesitation when pulling away and it was just a common issue with it getting gummed up. Many moons ago now though.

Nothing a good cup of tea won't fix!
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Old 09-05-2017, 07:40 AM   #12 (permalink)
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Yup, as long as you don't let it get clogged up, there's no need for cleaning. Doesn't do anything to your mileage
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Old 09-11-2017, 02:28 PM   #13 (permalink)
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I had the same model and didn't have an issue with the throttle body. Anything that is clean and properly lubricated works better.
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Old 09-11-2017, 03:26 PM   #14 (permalink)
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As hypermiling is all about how little you can open the throttle body (less the TB is open, the less fuel is consumed.) a TB that is closed 95% with even a 1mm layer of film on it would have no bearing on fuel economy as it doesn't add to the restriction of the overall intake mass air. Its using a straw to breath in with then sticking the straw into a large cup vs xlarge cup, the amount of air volume being taken into the straw is the same.

Effect on performance, throttle response and correct operation....for sure.

2013 Honda Civic Si - 2.4L
OEM front to back belly pan from the factory.
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