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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 > Exhaust note....



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      09-01-2012, 12:28 PM   #1
TT3 iN NyC
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Exhaust note....

Changes when I switch from map 0 to map 1 on PROcede.

Why does it change? You hear a tick sound when the maps are changed
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      09-01-2012, 12:33 PM   #2
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Do you have the golf tee mod done? If not maybe map 1 switches the flapper to open that's just a guess though since i don't have procede
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      09-01-2012, 12:56 PM   #3
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Quote:
Originally Posted by TT3 iN NyC
Changes when I switch from map 0 to map 1 on PROcede.

Why does it change? You hear a tick sound when the maps are changed
The wastegate position changes.. Changing the exhaust
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      09-03-2012, 10:27 AM   #4
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Quote:
Originally Posted by zerep1 View Post
The wastegate position changes.. Changing the exhaust
thanks!
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      09-03-2012, 11:14 AM   #5
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Yes wastegate positioning effects the exhaust note big time. You should hear it when it in NA mode! lol
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      09-03-2012, 11:22 AM   #6
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if you adjust WG postion down to 30 the exhaust will sound much deeper
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      09-03-2012, 11:58 AM   #7
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Quote:
Originally Posted by cn555ic View Post
Yes wastegate positioning effects the exhaust note big time. You should hear it when it in NA mode! lol
ya, its crazy loud!! whoa! huge difference

Quote:
Originally Posted by jpsimon View Post
if you adjust WG postion down to 30 the exhaust will sound much deeper
cool, i'll try that. I like the deeper sound better. sounds more exotic.

Another question, when left on map 1, in park, do the wastegates keep adjusting every minute or so? For example, the exhaust note will be deep, then hear a tick, exhaust note changes for 3 seconds, another tick, and goes back to deeper tone.
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      09-03-2012, 12:46 PM   #8
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Does that happen only during cold startups? If you set that wg position down the ticking should go away. it fixes all of my wastegate noise
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      09-03-2012, 02:03 PM   #9
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Quote:
Originally Posted by jpsimon View Post
Does that happen only during cold startups? If you set that wg position down the ticking should go away. it fixes all of my wastegate noise

cold startup and if driven and then i put in park. only happens on Map 1, not map 0.

i will try and lower the WG value to 30%. What do you have yours set to?
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      09-03-2012, 04:13 PM   #10
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I have pretty bad WG rattle, but with it set to 30 it gets rid of it completely
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      09-03-2012, 06:56 PM   #11
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Quote:
Originally Posted by jpsimon View Post
I have pretty bad WG rattle, but with it set to 30 it gets rid of it completely
really? it's the opposite for me, 90% makes it sound way better, 30% makes the rattle sound really nasty
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      09-03-2012, 07:08 PM   #12
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depends on the state of the wastegates. everyones are different, 40 and below fix it for me
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      09-03-2012, 07:46 PM   #13
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Quote:
Originally Posted by jpsimon View Post
depends on the state of the wastegates. everyones are different, 40 and below fix it for me
ahh I see, gotcha
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