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      09-29-2012, 04:07 PM   #35
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Drives: E92 335i
Join Date: Jan 2012
Location: Tampa, FL

Posts: 357
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Originally Posted by sle39lvr View Post
I have a E90 328i. I want to get this done due to bad gas mileage. Possible?

I think someone else answered this better earlier in this thread by user:


N52 engines, like the one in your car, are not direct injected. therefore, gasoline washes over the valves and keeps them clean.

you never need your valves cleaned.

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