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The EHA controls the chamber pressure diference yes! It is used to make slight adjustments to keep lambda in the proper range. At WOT it gives more fuel flow basically! At idle and throughout the power band it will keep the mixture where it is supposed to be based on readings and interpretations from the O2 sensor and a Water Temp Sensor on the block!
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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.
1986 190E 2.3 Black, Auto, Mods to come soon.....
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