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      03-12-2026, 11:25 PM   #1
imc43
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Drives: 2011.5 e92 M3
Join Date: Sep 2024
Location: TX

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Unhappy (ESS G1) Would a leak in this location cause power issues?

Hello. installed my G1 kit. very inconsistent boost. knew something was up. sometimes get good boost from a stop or very low speeds, get almost no boost rolling from higher speeds in higher gears when I WOT. barely beat an m x40i in a rolling race on the highway. that just isn't right for the G1 kit.

So I smoke tested the plenum. I found that there was a leak at the idle control hose, of course it's underneath everything. Would a leak at the idle control hose be responsible for the super inconsistent boost and loss of power that I am seeing?

Solution is to remove the plenum and reinsert/re-tighten the hose?

https://streamable.com/9h4qnt
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