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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Boost Leak After Intake "Cleaning"



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      09-30-2011, 04:29 PM   #23
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Should have came with two smaller screws to use for the map sensor housing.
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Mr nice doesn't play nice. But I guess he has a very fast car
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      09-30-2011, 04:32 PM   #24
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and those clamps blow, picked some up from home depot, way easier.
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      09-30-2011, 04:59 PM   #25
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The kit did have them. But the screws were longer than the holes in the pipe. Problems I never have.
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      09-30-2011, 05:51 PM   #26
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Good to go James?
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      09-30-2011, 06:28 PM   #27
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I think so. Just want it to hol together for the dyno day.
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      09-30-2011, 07:11 PM   #28
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Originally Posted by mithiral67 View Post
So, pulled the intake off to take a look to see how much buildup was on the 6 intakes. Saw that they were much better than the others and decided not to do a deep clean and only did a quick clean with carb cleaner.

I also changed out the spark plugs as stage 2 cobb was causing all kinds of misfires. Button everything back up, took it out and was hitting 17.5 psi down low, car pulled like crazy for about 60 miles yesterday.

Then today, a howling sound from the engine bay, can get past 7psi on my gauge and reduced power. No limp and no codes.

I am pretty sure its a boost leak. Whats it most likely, a boost leak along the intake route or possible a boost leak as I didnt seat the intake back on correctly?
Interested that there's not much buildup, how many miles on it?
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      09-30-2011, 07:25 PM   #29
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35 k. Thin coating that carb cleaner worked well on. Some gunk on the valves, but not so much I felt it needed a soak.
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